# 綺輝～4C～ vs Nailsalon Contrail

The clearest difference is iOS requirement: 綺輝～4C～ at 9.0 against Nailsalon Contrail's 11.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 38 months. The most recent releases landed on October 13, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 綺輝～4C～ | Nailsalon Contrail |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 38 months | Every 38 months |
| Size | 18 MB | 41 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NORIKO TANAKA](https://appshunter.io/developer/1530510298) | [MEGUMI UNO](https://appshunter.io/developer/1551778815) |

## What reviewers say

### 綺輝～4C～

[App page](https://appshunter.io/ios/app/4c/id1530510296)

**In-app purchases:** none


### Nailsalon Contrail

[App page](https://appshunter.io/ios/app/nailsalon-contrail/id1551778813)

**In-app purchases:** none


## Frequently asked questions

### Is 綺輝～4C～ free?

綺輝～4C～ is free to download, with no in-app purchases.

### Is Nailsalon Contrail free?

Nailsalon Contrail is free to download, with no in-app purchases.

### Do 綺輝～4C～ or Nailsalon Contrail have ads?

Neither 綺輝～4C～ nor Nailsalon Contrail shows ads.

### Which is updated more often, 綺輝～4C～ or Nailsalon Contrail?

綺輝～4C～ ships an update every 38 months, and Nailsalon Contrail every 38 months. Most recently, 綺輝～4C～ was updated on October 13, 2026 and Nailsalon Contrail on October 7, 2026.

---

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