Founder Interview
How Storybook App Passed $500K in Revenue with 10,000 Paid Subscribers in 2021 (Interview with Co-Founder Francisco Cornejo)
- Interview Date
- November 10, 2021
- Interviewee
- Francisco CornejoCo-Founder
Company Metrics at Interview Time
Revenue (2021 YTD)
$500K-$600K
Paid Subscribers (2021)
10,000
Monthly Active Users (2021)
30,000
Total Funding Raised
$1M
Historical Snapshot
These numbers were reported by Francisco Cornejo during his interview with Nathan Latka in November 2021 and are a historical snapshot, not current figures. See Storybook App’s current numbers.

Key Takeaways
- 01Storybook App launched its MVP in mid-2018 and saw fast growth starting January 2020.
- 02Revenue grew from $90K in 2018 to $100K in 2019, then jumped to $400K in 2020.
- 03By November 2021 the company had passed $500K and was close to $600K in annual revenue, targeting $700K for the full year.
- 04Monthly active users (defined as users completing stories) reached 30,000 in 2021, up from 8,000 in December 2020.
- 05Customer acquisition cost ran $40 to $60 per subscriber depending on country, with ad spend of around $40K to $50K per month on Facebook and Instagram.
- 06The company raised a $1M SAFE at an $8M valuation cap in 2020, with angel investor Jason Calacanis among the backers.
- 07The team stood at 20 people in November 2021, including 5 engineers, with 16 full-time and 4 part-time members.
- 08Apple and Google charged a 15% commission (not 30%) because annual revenue was under $1M at the time of the interview.
- 09Francisco and his wife are 50/50 co-founders; she created the content and product concept.
Company Metrics at Time of Interview
| Metric | Value | Source |
|---|---|---|
| Year Founded | 2018 | Founder interview, Nov 2021 |
| Revenue (2018) | $90K | Founder interview, Nov 2021 |
| Revenue (2019) | $100K | Founder interview, Nov 2021 |
| Revenue (2020) | $400K | Founder interview, Nov 2021 |
| Revenue (2021 year-to-date, as of November) | $500K-$600K | Founder interview, Nov 2021 |
| Paid Subscribers (2021) | 10,000 | Founder interview, Nov 2021 |
| Monthly Active Users (2021) | 30,000 | Founder interview, Nov 2021 |
| Monthly Active Users (2020) | 8,000 | Founder interview, Nov 2021 |
| Customer Acquisition Cost (2021, low end of a stated $40-$60 range) | $40 | Founder interview, Nov 2021 |
| Monthly Ad Spend (Facebook and Instagram) (2021) | $40K to $50K | Founder interview, Nov 2021 |
| Annual Plan Price (US) (2021) | $89.99 | Founder interview, Nov 2021 |
| Annual Plan Price (UK) (2021) | £50 | Founder interview, Nov 2021 |
| Annual Plan Price (Latin America) (2021) | $50 | Founder interview, Nov 2021 |
| Total Funding Raised | $1M | Founder interview, Nov 2021 |
| SAFE Valuation Cap (2020) | $8M | Founder interview, Nov 2021 |
| Team Size (2021) | 20 | Founder interview, Nov 2021 |
| Engineers (2021) | 5 | Founder interview, Nov 2021 |
| App Store Commission Rate (2021) | 15% | Founder interview, Nov 2021 |
| Founder Equity Split | 50/50 | Founder interview, Nov 2021 |
Growth Breakdown
Revenue
Storybook App grew from $90K in 2018 to $100K in 2019, then accelerated sharply to $400K in 2020. By November 2021 the company had already passed $500K and was approaching $600K, with a full-year target of $700K.
Customers and Downloads
The app had accumulated 1,500,000 downloads since its 2018 launch, with 10,000 active paying subscribers, almost all on annual plans. Monthly active users, defined as those completing stories, reached 30,000, up from 8,000 in December 2020.
Team
The team grew to 20 people by November 2021, with 16 full-time and 4 part-time members spread across Spain, Colombia, Argentina, Ecuador, and Australia. The engineering team comprised 5 people, with the remainder split between product and growth functions.
Funding
The company raised a $1M SAFE in 2020 at an $8M valuation cap, with angel investor Jason Calacanis among the backers. As of November 2021 Francisco said the Series A amount was still undecided, aiming to raise the following year in a range he put at $5M to $7M.
Growth Strategy
Paid Acquisition on Facebook and Instagram
Since launch, Storybook App relied primarily on paid social advertising, spending around $40K to $50K per month on Facebook and Instagram. Francisco put the average cost to acquire a paying subscriber at $40 to $60 depending on the country.
Annual Prepaid Plans
Selling on annual plans ($89.99 in the US) means the full subscription fee is collected upfront. Francisco said the goal was to keep ARPU above CAC so that renewals come on top, describing it as something the company aims for rather than a result it reported.
Freemium Funnel
The app is free to download with a seven-day trial, converting free users to paid subscribers who want access to all content. Of the 1,500,000 downloads accumulated since 2018, 10,000 were paying subscribers, though Francisco noted the comparison spans a business-model change, since the app originally sold pay-per-download rather than by subscription. The remaining active users sit on the free tier and contribute to the 30,000 MAU figure.
Partnerships
Francisco identified partnerships as a growing channel, noting ongoing discussions with companies in Latin America and a near-closed deal with a large player in the baby products space that he expected to deliver at least one million new downloads within the first thirty days.
Product Depth Before Aggressive Growth
Rather than pushing for immediate ARPU expansion from existing customers, the team focused on tripling retention and MAU metrics over the prior year before scaling spend. Francisco described this as building the product to a quality level that would support a much larger growth push once funding was secured.
Best Quotes
“Storybook is a b to c, a consumer subscription based app. It's free to download, seven days trial, and then you have a subscription to have all the content of the app.”
“So the average CAC cost per acquired subscriber, it's around 40 to $60 depending on the country.”
“So right now, we have 10,000 paying subscribers, active paying subscribers.”
“The only thing that we care is people who are actually completing the stories, not looking at the app, not starting a story, but the ones who are completing stories. And it's around 30 k.”
“We raised our pre seed round last year. We're lucky enough to crossroads with Jason Calacanis, amazing angel investor, probably one of the top five in The US, not the top three, at least.”
“No. Actually, my co founder, she's the brains and heart and soul of the product. She's the one who came up with the idea and who writes the stories and creates a content for storybook.”
What Happened Next
This interview captured Storybook App in November 2021, just over three years after the mid-2018 MVP. Revenue for the year had passed $500K and was closing on $600K, against a full-year plan of $700K the company had not yet reached. Of 1.5 million lifetime downloads, 10,000 were paying subscribers. Francisco said a Series A was the aim for the following year, with the amount still undecided and a $5M to $7M range floated. The figures here are a point-in-time snapshot from that conversation and do not reflect the company's current state. Visit the Storybook App profile on GetLatka for the latest available data.
View Storybook App’s current profile and metricsFull Transcript
Chapters
- 0:00Introduction and Business Model
- 0:38Launch Timeline and Early Growth
- 1:35Revenue History: 2018 to 2020
- 1:582021 Revenue Progress and Target
- 2:22Customer Acquisition and Ad Spend
- 2:56Pricing by Country and CAC
- 3:57Fundraising: $1M SAFE with Jason Calacanis
- 5:08Plans for Series A
- 5:29Product Focus and MAU Growth
- 6:27Paid Subscribers and Free Users
- 7:01Total Downloads All Time
- 7:58Team Size
- 8:02Co-Founding With His Wife and the 50/50 Split
- 8:49Engineering Team and Where the Team Sits
- 9:26App Store Commission and Direct Sales
- 10:08Partnership Strategy
- 10:45Famous Five Rapid Fire
Introduction and Business Model
Nathan Latka
00:00Hey, folks. My guest today is Francisco Cornejo. He's the husband and father of two boys. His family is his greatest treasure and his greatest project. He's building now a company called storybookapp.com to help parents make their kids fall asleep. Francisco, are you ready to take us to the top?
Francisco Cornejo
00:15>> Let's do it.
Nathan Latka
00:16Okay. So what's the model here? Are you selling directly to moms and dads, or is there a b to b play?
Francisco Cornejo
00:21>> Yeah. Storybook is a b to c, a consumer subscription based app. It's free to download, seven days trial, and then you have a subscription to have all the content of the app.
Nathan Latka
00:33Okay. Interesting. And when did you guys get when did you launch sort of the first line of code for the application?
Launch Timeline and Early Growth
Francisco Cornejo
00:38>> So the the MVP, we released it in mid twenty eighteen.
Nathan Latka
00:432018.
Francisco Cornejo
00:44>> But the but the fast growth, we saw it since January 2020.
Nathan Latka
00:51January 2020.
Francisco Cornejo
00:52>> She was one of the main users.
Nathan Latka
00:54Little ones. I love that. And so how much do parents pay on average per month to use it?
Francisco Cornejo
01:00>> We have yearly plans. So the yearly plan the yearly price in The US is 89.99.
Nathan Latka
01:06Okay. So $90. And when did you get your first customer? What year?
Francisco Cornejo
01:10>> We well, the day we launched. We started with a pay per download business model back then. Probably the wrong decision, but was great to test our hypothesis. There are people willing to pay for this even without looking at the app. And the reviews were great. So on day one, we sold 300 apps. That was really exciting and told us we are on the right track.
Nathan Latka
01:32And so how much revenue did you do that first year?
Revenue History: 2018 to 2020
Francisco Cornejo
01:35>> The first year, we did around 90 k. The second year, we did around a 100 k. Wasn't much difference. The next year, we did 400 k.
Nathan Latka
01:46So Oh, wow.
Francisco Cornejo
01:47>> There's there's when we started to grow really fast.
Nathan Latka
01:50And so that would have been 2020. Right?
Francisco Cornejo
01:53>> Yep.
Nathan Latka
01:54So in 2020, you did 400 k. How much will you do this year?
2021 Revenue Progress and Target
Francisco Cornejo
01:58>> The plan is to get there with 700 k.
Nathan Latka
02:01And And what what do have today?
Francisco Cornejo
02:02>> Pushing to grow. We're right now are really, really busy working on the product. So we're looking in the long term of the business.
Nathan Latka
02:10How much total, though, this year have you already done?
Francisco Cornejo
02:13>> We're already past 500 close to 600,000.
Nathan Latka
02:16Okay. So you need about 120,000 of sales in the next sixty days to break your goal.
Francisco Cornejo
02:20>> Yeah. We'll we'll get there.
Customer Acquisition and Ad Spend
Nathan Latka
02:22That's awesome. Okay. And how are you finding these customers? What's your growth strategy?
Francisco Cornejo
02:27>> So we've been relying on paid acquisition since we started Facebook and Instagram mostly. Now, we are seeing a big potential in partnerships and, of course, organic, which takes a long time to build. Now, we are seeing the the benefits of it.
Nathan Latka
02:44Francisco, how much did you spend on Facebook and Instagram ads last month?
Francisco Cornejo
02:50>> Last month wasn't a typical month, but we are spending around 40 k, 50 k.
Pricing by Country and CAC
Nathan Latka
02:56Per month. And so how much do you know you can like, what does it cost you to get a new $90 download?
Francisco Cornejo
03:02>> Depending on the country. So right now, for example, the pricing in Brazil, we are testing monthly plans, which is something we have nowhere in the in the world. In Latin America, the price is $50. In The UK, the price is £50. In The US, it's $89. So the average CAC cost per acquired subscriber, it's around 40 to $60 depending on the country.
Nathan Latka
03:29Okay. So $50. Like, in The US, you might spend $50 to get a $90 download. So you're profitable, you know well, you're profitable instantly because they pay it all upfront. Right?
Francisco Cornejo
03:38>> Yeah. Well, we aim to to do that. We aim to to have a higher ARPU than our CAC. So, the renewals come as an addition.
Nathan Latka
03:48But it's all annual. So, even if your ARPU, average revenue per user I per month is mean, you're getting it all right back immediately. Now, have you raised capital here? Have you bootstrapped?
Fundraising: $1M SAFE with Jason Calacanis
Francisco Cornejo
03:57>> Yeah. We raised our pre seed round last year. We're lucky enough to crossroads with Jason Calacanis, amazing angel investor, probably one of the top five in The US, not the top three, at least. And he also was an early investor in calendly.com. And he fell in love with the business model because he knows about the subscription apps and how massive they can grow. But he also understood the need of helping parents to get their kids to
04:32>> sleep because of a personal experience. It was
Nathan Latka
04:34So, a great how much did you raise around last year?
Francisco Cornejo
04:37>> So, it was around 1,000,000.
Nathan Latka
04:391,000,000. Okay. Got it. And what sort of cap or valuation did you raise that at?
Francisco Cornejo
04:45>> We raised at 8,000,000.
Nathan Latka
04:47Okay. Did that feel fair to you? Like looking back, was that the right call?
Francisco Cornejo
04:51>> Yeah. Yeah. I think the potential was there. The numbers show that the the investors are happy and we're looking to raise more. So, yeah, I think it was You
Nathan Latka
05:02only raised 1,000,000 today then?
Francisco Cornejo
05:04>> Yeah.
Nathan Latka
05:05Okay. That's great. How much are you looking to raise now?
Plans for Series A
Francisco Cornejo
05:08>> We're still undecided on the on the figure.
Nathan Latka
05:10Yeah. What do you think it'll be? Do you have a range?
Francisco Cornejo
05:14>> We're aiming to to get to our series a next year. So we should be looking at, it could be anything from 5 to 7,000,000.
Nathan Latka
05:23Mhmm. And if you raise 5,000,000, well, what do you think you'd spend that money on? Is it mostly CAC?
Product Focus and MAU Growth
Francisco Cornejo
05:29>> Well, it's gonna be growth, massive growth. Right now, we have been really focused on the product. So if you compare storybook from what it was a year ago and what it is now, we tripled our metrics in retention, in monthly active users, in weekly What is MAU? Content by a lot. So, we look at or MAU, the only thing that we care is people who are actually completing the stories, not looking at the app, not starting
05:58>> a story, but the ones who are completing stories. And it's around 30 k.
Nathan Latka
06:0430,000 monthly active users today?
Francisco Cornejo
06:06>> Yep.
Nathan Latka
06:07And what was it a year ago?
Francisco Cornejo
06:09>> A year ago was December last year was around 8,000.
Nathan Latka
06:15Around eight. Okay. Yeah. So this is great growth. How many customers will download the app this year? Or how many, I guess, are on the monthly or the annual recurring plans now today?
Paid Subscribers and Free Users
Francisco Cornejo
06:27>> So right now, we have 10,000 paying subscribers, active paying subscribers.
Nathan Latka
06:3310,000 paid. So when you say active paying subscribers, does active mean they're part of that MAU number?
Francisco Cornejo
06:39>> Yep.
Nathan Latka
06:40So I guess if you have 10,000 customers, how can you have 30,000 monthly active users, like triple the amount of your paid customers? Are there a bunch of free users in there?
Francisco Cornejo
06:51>> Yep.
Nathan Latka
06:52Oh, I see. Got it.
Francisco Cornejo
06:53>> But, yeah, it's a freemium model, so you can use the app for free. But if you want to to get access to all the content, you need to pay for a subscription.
Total Downloads All Time
Nathan Latka
07:01I see. So 10,000 paid on the annual plans. How many total downloads does the app have all time?
Francisco Cornejo
07:06>> All time. We are a little past 1,500,000.
Nathan Latka
07:11Okay. 1,500,000. So you've converted 10,000 of those into paid?
Francisco Cornejo
07:15>> Yeah. Well, remember that the business model changed. But, yeah, ultimately, that's that's what it is.
Nathan Latka
07:21Yep. Yep. Interesting. Any other product lines? I mean, can you sell anything else, these 10,000 customers to increase ARPU?
Francisco Cornejo
07:27>> Yeah. Of course. Many things. But the focus right now is to make a storybook the best product it can be so we can launch for a more aggressive growth. And instead of focusing to get more money out of this 10,000, we want to get to a million subscribers, 2,000,000 subscribers. And along the way, we will be launching additional things, premium content, physical products. We have a few things down the line, but I don't want to spoil
07:54>> the surprises.
Nathan Latka
07:55That's fair. Who is we? Who's how many people on the team today?
Team Size
Francisco Cornejo
07:58>> We are 20.
Nathan Latka
07:5920 people. And are you the sole founder?
Co-Founding With His Wife and the 50/50 Split
Francisco Cornejo
08:02>> No. Actually, my co founder, she's the brains and heart and soul of the product. She's the one who came up with the idea and who writes the stories and creates a content for storybook.
Nathan Latka
08:13Is she your wife?
Francisco Cornejo
08:14>> Yep.
Nathan Latka
08:17All right. So you guys are co founders. You split it fifty fifty at the start?
Francisco Cornejo
08:21>> Yep.
Nathan Latka
08:22Very cool. You didn't give her a little more, let her have 51%, you take 49%?
Francisco Cornejo
08:26>> She deserves that. She deserves everything. Absolutely.
Nathan Latka
08:29That's amazing. Okay. So you guys split fifty fifty. You sold 10% to angel investors. So it's like sort of like like forty forty ten or forty five forty five ten, something like that right now.
Francisco Cornejo
08:38>> Yeah. Well, yes. They they were safe. So not equity as as of now.
Nathan Latka
08:42Yeah. Yeah. Yeah. But but but when they convert, it'll be somewhere around there. I assume you're planning to raise it higher than the cap on the note, 8,000,000.
Engineering Team and Where the Team Sits
Nathan Latka
08:49>> Of course.
08:49Yeah. Very cool. All right. So 20 folks on the team today. How many are engineers?
Francisco Cornejo
08:56>> Our engineering team is five people.
Nathan Latka
08:59Five people. Okay. And what do the rest do?
Francisco Cornejo
09:02>> So the growth team and the product team take our bulk. We are 16 people full time and four people half time scattered across the world. We have people in Spain, Colombia and Argentina, Ecuador, one person in Australia. But the rest of the team is the product team and the growth team.
App Store Commission and Direct Sales
Nathan Latka
09:26Of the $700,000 in revenue you'll do this year, do have to give 30% of that back to Apple?
Francisco Cornejo
09:30>> No. There's a couple of things. We also sell directly to our website. But most interestingly,
09:40>> both Apple and Google now have a 15% commission if you are selling less than 1,000,000 a year. So they don't they take 15% fee.
Nathan Latka
09:50I see.
Francisco Cornejo
09:51>> So we're making the most of that. Next year, we won't be able to do that. See. Well, it's fast.
Nathan Latka
09:56Can you just launch a version two that starts from zero and just keep that under 1,000,000
Francisco Cornejo
10:01>> I'm guess I'm guessing you can, but you will be losing on all the rankings and all the history of the app.
Partnership Strategy
Nathan Latka
10:08Yeah. Very interesting. Okay. Got it. So that makes a lot of sense to me. You mentioned partnerships. Name a partner that you'd love to that you think could drive you a lot of customers.
Francisco Cornejo
10:18>> I don't want to jinx it, but we have been working with really interesting companies in Latin America. We're talking with a company in The US and we're about to close a deal with a consumer, very big player in the baby product space that we aim it's gonna give us at least a million new downloads in the first thirty days.
Nathan Latka
10:43Very cool.
Francisco Cornejo
10:44>> So, yeah. Don't want to just
Famous Five Rapid Fire
Nathan Latka
10:45We're rooting for you. Let's wrap up though now with the famous five, Francisco. Number one, favorite book.
Francisco Cornejo
10:51>> Wow.
10:53>> That's a hard one.
10:58>> I don't know. The most recent I read was working backwards.
Nathan Latka
11:02Number two, is there a CEO you're following or studying?
Francisco Cornejo
11:11>> Not really.
Nathan Latka
11:12Number three, what's your favorite online tool for building storybook?
Francisco Cornejo
11:19>> As of lately, I'm a big fan of Notion. I don't know if I can replace that.
Nathan Latka
11:24Number four, how many hours of sleep do you get every night?
Francisco Cornejo
11:27>> Between four and five.
Nathan Latka
11:29And what's your situate well, we actually we know you're married. How many kids?
Francisco Cornejo
11:33>> Two.
Nathan Latka
11:34Two kiddos. And how old are you?
Francisco Cornejo
11:35>> I'm 34.
11:37>> 34.
Nathan Latka
11:38Last question, Francisco. What's something you wish you knew when you were 20?
Francisco Cornejo
11:42>> Tech startup world.
Nathan Latka
11:45Alright, guys. There you have it. Storybook app launched in 2018. They did, call it $90,000 in revenue. In 2020, they broke 400,000 in revenue. This year breaks $700,000 in revenue, 1,500,000 total downloads of which 10,000 have converted to a paid plan. It's parents who want to help their kids go to sleep faster. Quality time right as they're falling asleep. They raised $1,000,000 at a $8,000,000 cap. Looking to raise maybe a 5 to $10,000,000 series a here
12:08soon. We'll see what happens. Francisco, thanks for taking us to the top.
Francisco Cornejo
12:11>> Nathan, pleasure. Thanks so much.
Nathan Latka
12:14One more thing before you go. We have a brand new show every Thursday at 1PM Central. It's called Shark Tank for SaaS. We call it deal or bust. One founder comes on, three hungry buyers, they try and do a deal live and the founder shares back end dashboards, their expenses, their revenue, ARPU CAC, LTV, you name it, they share it and the buyers try and make a deal live. It is fun to watch every Thursday 1PM
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