AnzanDojo vs 暗算Blitz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AnzanDojo
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This game was made for my son who does not study very hard but likes playing games with iPhone. This application is to help players strengthen their abilities to do mental calculations with enjoyment. Players are to do math in their heads until they answer correctly 10 consecutive questions and they compete for the time spent to complete calculations. Good for elementary school pupils. Helpful for grown-ups who always use calculators and/or spreadsheets for mental exercises also. Three levels available - Elementary, Intermediate and Advanced. Scores are ranked by the time spent and automatically recorded, then top 10 scores are displayed. Furthemore, your score can be posted to your Twitter by Twitter linkage function. Your score is not automatically posted, so you can post only good scores. This application avoids very easy questions such as 10+3. You can pass up to 3 times per game so you will not drop by the wayside.
暗算Blitz
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99×99までのかけ算でらくらく計算できるパターンを網羅。 苦手なパターンだけを徹底練習できます。 問題ごとに解法が参照できるので「これどうやるんだったっけ?」という疑問もすぐに解決。
Screenshots
Verdict
The clearest difference is in-app purchases: AnzanDojo at none against 暗算Blitz's 1. AnzanDojo also leads on ads (none vs shown) and iOS requirement (9.0 vs 17.6). 暗算Blitz's advantage is update cadence (daily vs every 3 weeks). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 暗算Blitz sells 1 one-off in-app purchase. AnzanDojo asks for nothing beyond the download.
AnzanDojo ships an update every 3 weeks, 暗算Blitz daily. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.
| Parameter | AnzanDojo | 暗算Blitz |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 9.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 4 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | ZOOMO Inc. | Toshihide KAWAI |
In-app purchases
AnzanDojo
No in-app purchases
暗算Blitz
- プレミアム・ユーザー$14.99









