いしずかん - クイズで集める鉱物・宝石の図鑑

Name: いしずかん - クイズで集める鉱物・宝石の図鑑
Author: ukisystem

ukisystem

⬇ 1+ downloads

Est. actual: 4

Free

No in-app purchases

Contains ads

Signals

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

📈Last 7 days +2 installs · 0/day since Oct 9
🏆Among Education apps bottom 42% by installs gained this week (989 peers growing)
🛠Updates quiet · updated 86 days ago

Installs since launch

+2 installs since Oct 9

Update history

1.2.0 Aug 21, 2026 · seen Oct 19, 2026

アプリ名を「いしずかん」から「いしクイズ」に変更しました。<br>クイズと図鑑の内容・遊び方はこれまでどおりです。

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

いしずかん - クイズで集める鉱物・宝石の図鑑 is an education app by ukisystem with 1+ downloads (about 4 estimated). +2 installs in the last 7 days. Install growth, rank history, SDKs and ad networks.

From the store listing: “A multiple-choice quiz where you guess the name of a rock or fossil from a photograph. Correctly identified specimens are added to your "Personal Encyclopedia." Over 170 species are included, from minerals and gemstones to prefectural rocks and high school earth science topics. Playable without an internet connection.”