Letterly: 15 Questions Answered From the Starter Story Interview, With Timestamps
Letterly is a paid app that turns speech into polished written text, and its founder credits one thing for its growth: making every screen simpler. In the Starter Story interview, founder Anton reports $250,000 a month in revenue two years after launch, after roughly fifteen years of startups that failed. The company also spends heavily on advertising, which the founder puts at about $200,000 a month.
We transcribed the interview with transcribe.so and asked it the same questions we ask every episode. Each answer below is written in our own words and points to who said it and the exact second, so you can check it in the video. All figures are self-reported by the founder and we have not audited them. We are not affiliated with Starter Story, and we sell a transcription service.
| Who is speaking | Role |
|---|---|
| Anton, founder of Letterly | Answers the questions |
| Starter Story host | Asks the questions, adds his own takeaways at the end |
What does Letterly do and how does it make money?
You speak, and Letterly turns it into well-written text (Founder, 01:56) for notes, messages, emails and social posts (Founder, 08:57). It is a paid app with a free trial (Founder, 02:08). The interview never gives a plan price.
What numbers does the founder share?
$250,000 a month in revenue, two years after launch (Founder, 01:32). About 30,000 monthly active users (Founder, 02:10), about 20,000 paying subscribers and 150,000 downloads over those two years (Founder, 02:17). His cost figures are in the cost answer below.
Who is the founder?
A serial founder: he spent fifteen years trying to build startups and all of them failed (Founder, 01:38), six or seven attempts before this one worked (Founder, 01:43). The interview does not cover his education or a technical job.
Where did the idea come from?
The team was building something else a little over two years ago (Founder, 02:38). Talk-to-text writing apps existed, but they felt like prototypes (Founder, 02:55); he needed the idea himself and could not use them because they were not built well enough (Founder, 03:03). So the team stopped its other startup and switched (Founder, 03:09). The first evidence came from early users: when asked why they used Letterly instead of a free chatbot (Founder, 05:55), they said it was simply easier to start recording (Founder, 06:05).
How long did it take to build, and with what?
The interview gives no build time for the first version. The mobile app started on a cross-platform framework and was later rebuilt natively in Swift, with a Python backend (Founder, 10:55). He says the simple result took thousands of hours of rebuilding and prototypes (Founder, 10:32).
Who is the customer?
People for whom speaking is easier than typing, because of speed, how they think, or difficulty typing (Founder, 09:07). The group was found through the founder's own need rather than research (Founder, 03:03).
How did it get from zero to $250,000 a month?
The interview does not walk through growth channels in order. The one channel named is paid advertising at about $200,000 a month, spent because the company wants to grow (Founder, 11:25). The founder's explanation for why the ads pay off is user experience, which he says helps onboarding, retention, conversion and word of mouth at once:
"it's like a multiplier to everything you do" (Founder, 05:20)
Why does it win against free alternatives?
The host points out that free alternatives exist, including doing it for free in a general chatbot (Host, 03:29). The founder's answer: the number one goal is to make the app really simple (Founder, 03:43), he calls that the competitive advantage (Founder, 03:58), and few products are both capable and easy to use (Founder, 04:04).
Why does a simple app like Letterly win against products with more features?
The host frames the episode around it: most founders think more features mean more value, and Anton showed the opposite (Host, 00:17).
"Every point of friction kills your revenue." (Founder, 00:25)
In practice the team keeps asking whether to build a new requested feature or make an existing one easier (Founder, 06:21), and it sometimes postpones a promised feature for a few weeks to make it simpler (Founder, 08:09).
What is the start-over playbook for a simple product?
Asked how he would build a new app this simply, he describes a loop:
"You should treat it as a separate feature." (Founder, 07:29)
- Simplify first on prototypes, before any code (Founder, 07:43).
- During the build, stop and check that it is as simple as planned, even if a promised feature slips (Founder, 08:09).
- After release, watch real use and feedback, then simplify again (Founder, 08:20).
How is it priced, and why?
Paid with a free trial (Founder, 02:08). The interview does not give a price, explain how it was set, or mention a price change.
What does it cost to run?
A team of ten at about $30,000 a month in salaries (Founder, 11:17), about $5,000 a month in AI costs and about $200,000 a month in advertising (Founder, 11:25). He calls it a lot of investment, made to improve the product and to grow (Founder, 11:37). Set against the revenue figure, advertising is most of it; the interview gives no profit or margin number.
What went wrong?
Before Letterly, years of failed startups. His diagnosis: he kept chasing something unique (Founder, 06:28) and kept building things people did not need much.
"I always ended up building something that people doesn't really need that much." (Founder, 06:36)
This time the team picked a validated business model and set out to make it simpler (Founder, 06:44).
What is the founder's advice?
He offers it as what worked for him, not a rule: work with co-founders from day one and build something you can launch in one or two months (Founder, 12:16); choose a new idea that someone else has already validated (Founder, 12:30); once there is revenue, leave your job and go all in (Founder, 12:44); and build something that makes money from day one (Founder, 12:46). For most people, improving something that already works beats inventing (Founder, 06:53).
What did the host take away?
His own conclusion is that simplicity is the whole story here:
"simplicity is the secret sauce for Letterly" (Host, 13:07)
He adds that it seems counterintuitive and sums it up as keep it simple (Host, 13:12).
What to copy
- Budget for simplicity like a feature. Put it on the roadmap with its own time, and accept that it delays other features.
- Ask users why they chose you over the free option. Their answer, that it is easier to start, becomes your positioning and your product rule.
- Pick a validated category, then compete on friction. Fifteen years of novel ideas failed; an existing idea done more simply worked.
More from this series: the voice app founders playbook, every Starter Story episode answered, and our free YouTube transcript tool if you want to run the same questions on any interview.
Ask this interview
Ask anything about the Letterly interview. Answers come only from the transcript, with the exact second each point is said.