The Superwall Podcast · 2025-10-07
Peter Gillan - My App Makes $600k/Year Using This Easy Growth Strategy (copy me)
Peter Gillan co-founded Stronger, a bootstrapped gamified workout tracker (strength-score muscle heatmap) built by three engineers in Northern Ireland: ~1.2M users and ~$600K ARR. Growth came from organic content: a pre-launch viral founder video, comment-reply stitch series, TikTok screenshot carousels, and a 6-second Instagram 'fade-in' format that pulled an estimated 150-300M views once they scaled it across accounts. An accidental hard paywall led them to require a trial before free use, their biggest monetization boost (~25%).
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Numbers mentioned
| Subject | Metric | Value | Quote |
|---|---|---|---|
| Stronger | users Total users (guest's guess) | 1.2M users estimate | “I think we've probably got 1.2 million users, I would guess, on Stronger at this point.” |
| Stronger | arr | USD 600K approximate | “ARR around about 600,000.” |
| Stronger | arr Title: '$600k/Year' | USD 600K approximate | “This accidentally viral TikTok video made these engineers $600,000 a year with their app.” |
| Stronger | views Total views from the Instagram fade-in format across all posts ('at least') | 150M–200M views estimate | “we were able to get, I would guess, it's probably between 150 to 200 million views at least from it.” |
| Stronger | views Upper estimate of total fade-in format views, after host suggested 200M+; never added up | 300M views estimate | “Yeah, I would say potentially even 300 million. I've never added it up” |
| Stronger | views Best month of fade-in format views, 2-3 months before recording; format ran 5-6 months | 100M views/month approximate | “I know 2, 3 months ago we did 100 million-view month with it, and I've been doing it for like 5, 6 months.” |
| Stronger | views A couple of fade-in videos reached this | 40M viewsper video approximate | “We've a couple of videos hit 40 million.” |
| Stronger | watch time Average watch time on some fade-in videos vs the ~6-second video length (viewers watch it about twice) | 2 xper video approximate | “I think the average watch time on some of our videos was over double that of the video length, which suggests the average person actually watches it twice.” |
| Stronger | count Likes on one fade-in video shown on screen | 143K likesper video | “Oh, there's one. 143,000 likes.” |
| Stronger | count Total likes on the Stronger TikTok account, much of it from the early stitch-reply series | 4.9M likes approximate | “we've got about 4.9 million there” |
| Stronger | followers TikTok followers gained in the first week after the first viral video, before the app was available | 15K followers approximate | “And we had like maybe 15,000 followers within the first week.” |
| Stronger | rank Peak App Store rank in Health & Fitness after launch | 3 rank | “I think at one point, the highest we ever reached was number three in Health & Fitness” |
| Stronger | revenue 'Biggest boost' from switching to trial-first (hard paywall); the exact metric boosted was not specified | +25% estimate | “And overnight, that was just our biggest boost, probably like 25% for us.” |
| Stronger | time to milestone How long the strength score had no competitor copying it | 12 months approximate | “With the strength score, we probably had 12 months where nobody else was doing it” |
| Stronger | team size Three engineer co-founders, no designers | 3 people | “It's a lot harder to do when you're bootstrapped and, you know, a three-person team.” |
| benchmarkTypical agency margin on outsourced content/marketing execution | margin | 20% approximate | “the in-house team is always going to win, cuz they're not having to pay, you know, 20% margin there.” |