# RainbowCalc vs ルーティーンToDo

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.

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.

## The numbers

| Metric | RainbowCalc | ルーティーンToDo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.0 (1 ratings)](https://appshunter.io/ios/app/rainbowcalc/id6479331134/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Ad-supported | — |
| Size | 34 MB | 20 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andre Silva](https://appshunter.io/developer/1719182490) | [KAIHAWK](https://appshunter.io/developer/1232590278) |

## What reviewers say

### RainbowCalc

[App page](https://appshunter.io/ios/app/rainbowcalc/id6479331134)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ルーティーンToDo

[App page](https://appshunter.io/ios/app/todo-todo/id6758130671)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ルーティーンToDo プロ版 | $1.99 | per month |


## Frequently asked 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.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*