Tuner vs Klaus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tuner
This application provides precise instrument tuning capabilities. It assists musicians in achieving accurate pitches for their instruments.
- Precise instrument tuning
- Achieve accurate pitches
- Supports various instruments
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Tuner lets you tune your instruments with precision.
Klaus
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Mit der App für Klaus - Die Hackbrett Maus stimmst du dein Hackbrett schnell und präzise. Die App erkennt die Tonhöhe in Echtzeit und unterstützt dich beim genauen Stimmen deiner Saiten – einfach, übersichtlich und speziell fürs Käsehackbrett entwickelt.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Tuner | Klaus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (213 ratings) — better | — |
| Positive reviews | 51.6% of reviews | — |
| Number of ratings | 213 — better | — |
| Update frequency | Every 14 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 26.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Julian Boehm-Tettelbach | Markus Stradner |
Bugs and requests
Tuner
Reported bugs
4 issues- 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
7 requests- 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)
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- Just intonation option
- Option to turn off metronome app pop-up
Klaus
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Tuner
No in-app purchases
Klaus
No in-app purchases
