RainbowCalc vs ルーティーンToDo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RainbowCalc
This calculator app offers extensive customization with a wide color picker for backgrounds and keys, enhancing usability and accessibility. It includes a calculation history with sharing options and supports basic arithmetic, percentages, and square roots.
- Customizable background and key colors
- Advanced color picker
- Calculation history
- Share calculations
- Basic operations
- Percentage calculations
- Square root calculations
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It has large numbers for easy visualization and better usability and accessibility! Easy to use and with easily readable characters! With this customizable calculator, it is possible to change the background and numeric key colors to the ones you like the most, bringing more visual comfort to the user. Thanks to the advanced color picker, you can choose any color! Combine colors with your phone case or device color, stand out with your unique customization. No more limited themes and colors chosen for you! Choose your favorite theme yourself. It also features a history of all calculations, where you can delete them individually or all at once, and the ability to share a calculation via messaging apps. Download this great, lightweight, beautiful, and personalized calculator for free now. • All colors are possible! • Combine colors with your style. • Calculation history and sharing. • Basic operations. • Percentage calculations. • Square root calculations.
ルーティーンToDo
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ルーティーンToDoは今日やることに特化したToDoアプリです。 タスク予約機能を使用すると、毎日のルーティーンタスクを毎朝自動でToDoに登録できます。 『読書』『ゴミ出し』『朝のメール返信』などを手動で毎朝登録する必要はありません。 もちろん通常のToDo項目を手動で追加することも容易です。 シンプルなデザインを採用しているため、どなたでも迷わず操作できます。 毎日の仕事・生活にぜひご活用下さい。 ----------------------------------------------------------------------------- プレミアムプラン(自動更新サブスクリプション)について ----------------------------------------------------------------------------- • 定期購入期間終了の24時間以上前に自動更新をオフにしない限り、期間終了時に自動更新されます。 • 更新料金は、定期購入期間終了前の24時間以内に課金されます。 • 購読の管理・解約は、購入後にお使いの端末の「設定」>「Apple ID」>「サブスクリプション」から行えます。 利用規約(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ -----------------------------------------------------------------------------
Screenshots
Verdict
The clearest difference is in-app purchases: RainbowCalc at none against ルーティーンToDo's 1. RainbowCalc also leads on update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement 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. ルーティーンToDo sells 1 in-app purchase, starting at $1.99 per month. RainbowCalc asks for nothing beyond the download.
RainbowCalc ships an update fortnightly, ルーティーンToDo every 3 months. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.
| Parameter | RainbowCalc | ルーティーンToDo |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly — better | Every 3 months |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 34 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Andre Silva | KAIHAWK |
In-app purchases
RainbowCalc
No in-app purchases
ルーティーンToDo
- ルーティーンToDo プロ版$1.991 Month









