Тридцать один icon

Тридцать один

Publish Digital Books

⬇ 1,000+ downloads

Est. actual: 3,119

Free

Released: Jun 30, 2016

No in-app purchases

Contains ads

Signals

3 this week · 2 positive All of this week's signals →

📈Last 7 days 0 installs · 0/day since Oct 9
🏆Among Books & Reference apps bottom 0% by installs gained this week (364 peers growing)
🛠Updates quiet · updated 104 days ago

Installs since launch

0 installs since Oct 9

Update history

9.4 Jul 30, 2026 · seen Oct 19, 2026

Only the current version so far — new entries appear as the app ships updates.

Тридцать один is a books & reference app by Publish Digital Books with 1,000+ downloads (about 3.1K estimated). Released Jun 30, 2016. Install growth, rank history, SDKs and ad networks.

From the store listing: “Roman Smeklof, Thirty-one”