Harpagia: $10K a month, self-reported, founder interview, May 21st, 2026

Kayelle Apps sells Harpagia, a free offline text-based idle RPG that keeps progressing while players are away. Its $10K a month was reported by the founder in an interview (not independently verified), as of May 21st, 2026.

What it actually sells

Kayelle Apps publishes Harpagia, a free offline text-based idle RPG for iOS and Android. Players can train 16 skills, battle more than 100 monsters, trade with other players, and continue progressing while the game is closed.

The site says, “Whether you enjoy actively optimizing your character or simply checking in throughout the day, Harpagia fits your playstyle.” It also lists “16 skills to level 200,” equipment, runes, soulstones, pets, challenging bosses, item trading, and more than 150 achievements.

How it charges

Harpagia is free to play, and in-app purchases are optional. It is available on iOS and Android, with documented systems for offline training, fighting, resource gathering, character customization, player trading, monsters, bosses, and achievements.

Where customers come from

Harpagia is available through the App Store and Google Play, and the site displays 50K+ total downloads. It also includes a trailer showing combat, skilling, and progression. Another Kayelle Apps game, Classic Big 2, is listed on the App Store.

What stands out

The site displays 50K+ total downloads, a 4.5-star App Store rating, and a 4.1-star Google Play rating. Harpagia includes 16 skills, more than 100 monsters, challenging bosses, player trading, character equipment, pets, offline progression, and more than 150 achievements.

From the official site

Whether you enjoy actively optimizing your character or simply checking in throughout the day, Harpagia fits your playstyle.

16 skills to level 200

Excerpts from the official website, fetched October 1, 2026.

Where it sits in the data

Kayelle Apps's $10K a month is higher than 66% of the 6,604 projects with founder-reported monthly revenue in our dataset; the median across them is $2K. Snapshot: 2026-09-30. The dataset only covers founders who chose to publish their numbers, so it leans toward businesses that work; use it for scale, not as an average.

Currency

All figures are in US dollars as published. A rough yuan or euro conversion is not applied here because prices, taxes and acquisition costs differ by country.

Could you build something like this?

In my view, demand would come from players who want an idle RPG with both active character optimization and offline progression on iOS or Android. Distribution would need App Store and Google Play listings, store pages, screenshots, and gameplay video.

The difficult parts would include producing enough game content, maintaining progression systems, supporting player trading, handling live mobile releases, and meeting store and consumer-protection requirements. Ongoing player support and competition for attention in both app stores would also add work.

Verdict: Hard to replicate.

One thing to take from it

The clearest takeaway is to pair a free mobile entry point with optional in-app purchases and visible store distribution. Harpagia also presents substantial product depth through skills, equipment, pets, monsters, trading, offline progression, and achievements.

Sources

Kayelle Apps official website, fetched October 1, 2026
Starter Story founder interview: revenue reported by the founder in an interview (not independently verified), as of May 21st, 2026

Revenue, team and start-cost figures are what the founder reported at the interview date, not current figures and not a prediction of what you will earn. Product and pricing facts come from the business's own website as checked on 30 September 2026. Method & sources · Disclosure