# PROtune vs StringPilot

The clearest difference is in-app purchases: StringPilot at none against PROtune's 5. StringPilot also leads on update cadence (every 4 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. PROtune sells 5 in-app purchases, starting at $0.99 per year. StringPilot asks for nothing beyond the download.

PROtune ships an update monthly, StringPilot every 4 days. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | PROtune | StringPilot |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Size | 61 MB | 33 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SilkIdea s.r.o.](https://appshunter.io/developer/413936304) | [浩铭 顾](https://appshunter.io/developer/1873844063) |

## What reviewers say

### PROtune

[App page](https://appshunter.io/ios/app/protune-guitar-tuner-and-chords/id6742357391)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tuner Subscription | $0.99 | per year |
| Chord Display Subscription | $0.99 | per year |
| PROtune+ | $1.99 | per month |
| PROtune+ | $9.99 | per year |
| PROtune+ | $19.99 | one-time |


### StringPilot

[App page](https://appshunter.io/ios/app/stringpilot/id6759282296)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PROtune free?

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

### Is StringPilot free?

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

### Do PROtune or StringPilot have ads?

Neither PROtune nor StringPilot shows ads.

### Which is updated more often, PROtune or StringPilot?

PROtune ships an update monthly, and StringPilot every 4 days. Most recently, PROtune was updated on October 25, 2026 and StringPilot on October 17, 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.*