Starter Story · 2025-06-25
This App Makes $25,000/Month
Lukas Hermann, a German developer, built Stagetimer, a remote-controlled countdown timer for event speakers. He shipped a one-feature MVP in 3 days (Nov 2020), validated it in a small video-production subreddit, earned his first dollar after 224 days, quit his job in 2022 at $3K/month, and now runs it with his wife at $25K/month and 80-90% margin. ~50% of traffic comes from Google via niche integration docs and videos; ~1/3 from word of mouth, driven by a branded logo on every shared link and a free tier used by event freelancers.
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Numbers mentioned
| Who | Metric | Value | Context | When |
|---|---|---|---|---|
| Stagetimer | revenue | USD 25K/month approximate | 0:49 | |
| Stagetimer | users | 20K users approximate | 0:49 | |
| Stagetimer | paying users | 4,400 customers approximate | Paying now or paid at any point | 0:49 |
| Stagetimer | users | 86K visitors/month approximate | Unique website visitors per month | 0:49 |
| Stagetimer | share | 50% approximate | Share of traffic from Google | 6:47 |
| Stagetimer | share | 33% approximate | Share of traffic from people recommending the tool (word of mouth) | 6:47 |
| Stagetimer | time to milestone | 3 days | Time to ship the MVP | 2:20 |
| Stagetimer | time to milestone | 224 days | MVP to first dollar of revenue, as a side project | 2:20 |
| Stagetimer | revenue | USD 3,000/month approximate | When he quit his job | 4:14 |
| Stagetimer | revenue | USD 10K/month approximate | 4:14 | |
| Stagetimer | cost | USD 280/month | Server and infrastructure | 9:56 |
| Stagetimer | cost | USD 250/month | Tools and services (Airtable, Postmark, etc.) | 9:56 |
| Stagetimer | ad spend | USD 1,400/month | Paid ads (Google Ads, run by his wife) | 9:56 |
| Stagetimer | margin | 80–90% approximate | Profit margin | 9:56 |