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Put 2 to 5 apps side by side, from Google Play, the App Store, or both.
The leader in each row is highlighted.
Daily position in Japan. Higher on the graph is better (rank 1 is the top).
| Date | TestMaker | LingoDeer Plus: L… |
|---|---|---|
| 16 Oct 2026 | #27 | — |
| 15 Oct 2026 | #28 | — |
| 14 Oct 2026 | #35 | — |
| 13 Oct 2026 | #34 | — |
| 12 Oct 2026 | #31 | — |
| 11 Oct 2026 | #24 | — |
| 10 Oct 2026 | #27 | — |
| 9 Oct 2026 | #26 | — |
| 8 Oct 2026 | #29 | — |
Not in this chart in Japan: LingoDeer Plus: Language quiz.
Share of ratings at each star level. A big 1★ bar means many unhappy users.
TestMaker
★ 4.76 · 5,928 ratings
LingoDeer Plus: Language quiz
★ 3.90 · 2,430 ratings
How each app sells itself on the store, how it makes money, and what devices it needs.
New ratings per day is the best free sign of how many people are downloading right now: more new ratings means more new players.
Not enough daily data yet. The graph appears after the daily scraper has collected these apps on at least 2 days.
What each app changed, and when. Compare the dates with the rank graph to see what worked.
No changes found in this period.
Best position in each country's top charts. The 10 countries where these apps are strongest.
From each app's saved English reviews. The red cell is where an app gets the most complaints, which is your chance to do better.
TestMaker
Biggest complaint: crashes and bugs
“this app would be great if it didn't glitch my keyboard.”
LingoDeer Plus: Language quiz
Biggest complaint: pay to win, prices
“I get that money is important, but maybe put ads instead to access new levels one at a time?”
