# Violin Level vs CalcuStyle

The clearest difference is in-app purchases: Violin Level at none against CalcuStyle's 1. Violin Level also leads on update cadence (every 2 weeks vs every 6 months) and iOS requirement (15.8.3 vs 18.4). On price, ads and device support there is nothing between them.

Both are free to download. CalcuStyle sells 1 one-off in-app purchase. Violin Level asks for nothing beyond the download.

Violin Level ships an update every 2 weeks, CalcuStyle every 6 months. The most recent releases landed on October 15, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Violin Level | CalcuStyle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 weeks** | Every 6 months |
| Size | 36 MB | 55 MB |
| Requires iOS | **15.8.3** | 18.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### Violin Level

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

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

**In-app purchases:** none


### CalcuStyle

[App page](https://appshunter.io/ios/app/calcustyle-custom-calculator/id6753620122)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $1.99 | one-time |


## Frequently asked questions

### Is Violin Level free?

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

### Is CalcuStyle free?

CalcuStyle is free to download, with in-app purchases available.

### Do Violin Level or CalcuStyle have ads?

Both Violin Level and CalcuStyle show ads.

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

Violin Level ships an update every 2 weeks, and CalcuStyle every 6 months. Most recently, Violin Level was updated on October 15, 2026 and CalcuStyle on October 20, 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.*