# Fill the Rainbow vs 頭の回転を早くする！Line

The clearest difference is in-app purchases: 頭の回転を早くする！Line at none against Fill the Rainbow's 2. Fill the Rainbow's advantage is device support. On price and iOS requirement there is nothing between them.

Both are free to download. Fill the Rainbow sells 2 one-off in-app purchases. 頭の回転を早くする！Line asks for nothing beyond the download.

## The numbers

| Metric | Fill the Rainbow | 頭の回転を早くする！Line |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/fill-the-rainbow-puzzle-game/id6468705258/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | Every 4 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 21 MB | 109 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Viviana Baeza](https://appshunter.io/developer/1664318415) | [Hayato Saito](https://appshunter.io/developer/1865824244) |

## What reviewers say

### Fill the Rainbow

[App page](https://appshunter.io/ios/app/fill-the-rainbow-puzzle-game/id6468705258)

A relaxing one-line puzzle game that sharpens your mind. Connect all the dots without overlapping lines to solve over 900 handcrafted levels. Enjoy a minimalist design with beautiful colors and awesome audio effects.

**Highlights:** One-line brain training puzzles, Over 900 handcrafted levels, Minimalist design with beautiful colors, Awesome audio effects, Relaxing atmosphere, Multiple tile designs and background colors

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tile Pack | $1.99 | one-time |
| Remove Ads | $3.99 | one-time |


### 頭の回転を早くする！Line

[App page](https://appshunter.io/ios/app/line/id6757463589)

**In-app purchases:** none


## Frequently asked questions

### Is Fill the Rainbow free?

Fill the Rainbow is free to download, with in-app purchases available.

### Is 頭の回転を早くする！Line free?

頭の回転を早くする！Line is free to download, with no in-app purchases.

---

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