# PolyTune vs Ampero Control

The clearest difference is review sentiment: PolyTune at 66% against Ampero Control's 13%. PolyTune also leads on rating (2.8 vs 1.8) and iOS requirement (9.0 vs 13.0). Ampero Control's advantage is price (Free vs $4.99) and update cadence (every 14 months vs every 40 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Ampero Control is free to download; PolyTune costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PolyTune holds the better App Store score, 2.8 against 1.8. Both are backed by a comparable volume of ratings — 79 and 59 respectively. Written reviews point the same way: 66% of PolyTune's written reviews are positive against 13% of Ampero Control's.

PolyTune ships an update every 40 months, Ampero Control every 14 months. The most recent releases landed on September 28, 2026 and July 27, 2026 respectively.

## The numbers

| Metric | PolyTune | Ampero Control |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[2.8 (79 ratings)](https://appshunter.io/ios/app/polytune/id364009203/reviews)** | [1.8 (59 ratings)](https://appshunter.io/ios/app/ampero-control/id1526244402/reviews) |
| Number of ratings | **79** | 59 |
| Positive reviews | **65.7% of reviews** | 13.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 14 months** |
| Monetization | Paid | **Free** |
| Size | 45 MB | 38 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TC Electronic](https://appshunter.io/developer/364009206) | [Hotone](https://appshunter.io/developer/982536111) |

## What reviewers say

### PolyTune

[App page](https://appshunter.io/ios/app/polytune/id364009203)

This application provides a powerful and accurate tuning tool for musicians. It allows for simultaneous tuning of all strings, supports various guitar and bass modes, and offers drop tunings. Its technology is based on a highly-regarded pedal tuner used by professionals.

**Highlights:** Tune all strings at once, Guitar/bass mode, Drop tunings support, Award-winning pedal technology, Chromatic tuning modes, High accuracy

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🩵 Works really well
- 💯 Accurate and precise
- 🔢 Polyphonic tuning mode
- 🎨 Customizable display colors
- 🔌 Works with electric and acoustic guitars

**What reviewers complain about**

- 🐛 Crashes or freezes on newer iOS versions
- 🔇 Struggles to pick up low strings or in noisy environments
- ⏱️ Screen dims during use
- 🚫 No support for alternate/custom tunings
- 💤 Drains battery quickly when running in background

**Reported bugs**

- Crashes on launch
- Unable to detect or tune certain strings
- Inaccurate tuning readings

**Requested features**

- Add support for 432Hz tuning
- Implement custom tuning options
- Improve compatibility with external audio interfaces
- Add a dedicated on/off switch


### Ampero Control

[App page](https://appshunter.io/ios/app/ampero-control/id1526244402)

This app simplifies the setup and control of a Bluetooth MIDI controller. Easily manage presets, effects, and MIDI messages with a clean interface and pre-made or custom templates. Take full command of your musical gear without complex menus.

**Highlights:** Easy-to-use UI for MIDI controller setup, MIDI template management for presets and effects, Save and customize your own MIDI templates, Control MIDI messages via footswitches and expression pedals, On-the-fly controller adjustments, Supports standard, USB, and Bluetooth MIDI

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PolyTune free?

PolyTune costs $4.99, with no in-app purchases.

### Is Ampero Control free?

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

### Which has better reviews, PolyTune or Ampero Control?

PolyTune is rated higher. PolyTune averages 2.8 out of 5 from 79 ratings, while Ampero Control averages 1.8 from 59 ratings.

### Do PolyTune or Ampero Control have ads?

Neither PolyTune nor Ampero Control shows ads.

### Which is updated more often, PolyTune or Ampero Control?

PolyTune ships an update every 40 months, and Ampero Control every 14 months. Most recently, PolyTune was updated on September 28, 2026 and Ampero Control on July 27, 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.*