# i vs Violin Level

The clearest difference is ads: i at none against Violin Level's shown. i also leads on iOS requirement (10.0 vs 15.8.3). On price, update cadence, in-app purchases and device support there is nothing between them.

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

i ships an update fortnightly, Violin Level every 2 weeks. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | i | Violin Level |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 5 MB | 36 MB |
| Requires iOS | **10.0** | 15.8.3 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Robo Electronics co., Ltd.](https://appshunter.io/developer/1232651973) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-dothermometer/id1546064427)

**Features:** macOS Compatibility

**In-app purchases:** none


### Violin Level

[App page](https://appshunter.io/ios/app/violin-level/id6748533104)

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

**In-app purchases:** none


## Frequently asked questions

### Is i free?

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

### Is Violin Level free?

Violin Level is free to download, with no in-app purchases.

### Do i or Violin Level have ads?

Violin Level shows ads; i does not.

### Which is updated more often, i or Violin Level?

i ships an update fortnightly, and Violin Level every 2 weeks. Most recently, i was updated on October 2, 2026 and Violin Level on October 15, 2026.

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