F Numbers

Name: F Numbers
Author: C-Spec

C-Spec

⬇ 1,000+ downloads

Est. actual: 2,179

Free

Released: Jun 3, 2024

No in-app purchases

No ads

Signals

3 this week · 1 positive · 1 warning All of this week's signals →

📈Last 7 days +16 installs — 6% slower than the week before (+17) · 1/day since Oct 7
🏆Among Tools apps top 33% by installs gained this week (940 peers growing)
🛠Updates quiet · updated 104 days ago

Installs since launch

+33 installs since Oct 7

Update history

2.2.1 Jul 29, 2026 · seen Oct 22, 2026

Updated the app to target Android 16 (API level 36) to comply with the latest Google Play requirements.

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

F Numbers is a tools app by C-Spec with 1,000+ downloads (about 2.2K estimated). +16 installs in the last 7 days. Released Jun 3, 2024. Install growth, rank history, SDKs and ad networks.

From the store listing: “Quick lookup of filler metal groupings”