# Tuner؜ vs Klaus

The clearest difference is update cadence: Klaus at monthly against Tuner؜'s every 14 months. Klaus also leads on device support (3 vs 1) and iOS requirement (12.0 vs 26.0). On price, 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.

Tuner؜ ships an update every 14 months, Klaus monthly. The most recent releases landed on October 20, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Tuner؜ | Klaus |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (213 ratings)](https://appshunter.io/ios/app/tuner/id6469008353/reviews)** | — |
| Number of ratings | **213** | — |
| Positive reviews | 51.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 14 months | **Monthly** |
| Monetization | Free | — |
| Size | 1 MB | 32 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Julian Boehm-Tettelbach](https://appshunter.io/developer/1454384689) | [Markus Stradner](https://appshunter.io/developer/1884693633) |

## What reviewers say

### Tuner؜

[App page](https://appshunter.io/ios/app/tuner/id6469008353)

This application provides precise instrument tuning capabilities. It assists musicians in achieving accurate pitches for their instruments.

**Highlights:** Precise instrument tuning, Achieve accurate pitches, Supports various instruments

**In-app purchases:** none

**What reviewers like**

- 🚀 Simple and efficient
- 👍 User-friendly interface
- ✨ Clean and beautiful design
- 🎯 Accurate tuning
- 🚫 No ads

**What reviewers complain about**

- 🐛 Buggy performance
- ⚠️ Unstable, causes crashes
- 📱 Screen freezes
- ❓ Unclear settings
- 🪲 Annoying pop-ups

**Reported bugs**

- Advertisement for another app does not disappear even after download
- App causes iPhone to crash or freeze
- Screen freezes with blue spots
- App causes phenomenal bugs, not recommended

**Requested features**

- Allow changing reference frequency (440, 442, baroque, etc.)
- Option to select instrument (e.g., French horn)
- Ability to switch between sharps and flats
- Show octave of the note
- Microtonal tuning options (24TET, cent modifier)


### Klaus

[App page](https://appshunter.io/ios/app/klaus-die-hackbrett-maus/id6760487536)

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

**In-app purchases:** none


## Frequently asked questions

### Is Tuner؜ free?

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

### Is Klaus free?

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

### Do Tuner؜ or Klaus have ads?

Neither Tuner؜ nor Klaus shows ads.

### Which is updated more often, Tuner؜ or Klaus?

Tuner؜ ships an update every 14 months, and Klaus monthly. Most recently, Tuner؜ was updated on October 20, 2026 and Klaus on October 10, 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.*