Comparison

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.

Head to head
About

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.

Highlights
  • Customizable background and key colors
  • Advanced color picker
  • Calculation history
  • Share calculations
  • Basic operations
  • Percentage calculations
  • Square root calculations
Features
Read full description

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.

About

ルーティーンToDo

Features
Read full description

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

RainbowCalc4 screens
ルーティーンToDo4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 7 level
RainbowCalc versus ルーティーンToDo: the parameters behind the verdict, then further details
ParameterRainbowCalcルーティーンToDo
PriceFreeFree
Rating2.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyFortnightly — betterEvery 3 months
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size34 MB20 MB
Age rating4+4+
DeveloperAndre SilvaKAIHAWK

In-app purchases

None

RainbowCalc

No in-app purchases

1 purchases

ルーティーンToDo

Subscriptions1
  • ルーティーンToDo プロ版$1.991 Month

Questions

Is RainbowCalc free?
RainbowCalc is free to download, with no in-app purchases.
Is ルーティーンToDo free?
ルーティーンToDo is free to download, with in-app purchases available.
Do RainbowCalc or ルーティーンToDo have ads?
Both RainbowCalc and ルーティーンToDo show ads.
Which is updated more often, RainbowCalc or ルーティーンToDo?
RainbowCalc ships an update fortnightly, and ルーティーンToDo every 3 months. Most recently, RainbowCalc was updated on October 27, 2026 and ルーティーンToDo on October 31, 2026.

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