# Feedback Trainer — Ear Training for PA

> Ear Training for PA (iPhone/iPad app by Shunsuke Takasu.)

- Source: https://appshunter.io/ios/app/feedback-trainer/id6788974378 (this page in markdown: same URL + `.md`)
- Developer: [Shunsuke Takasu](https://appshunter.io/developer/6788974380)
- Category: Music
- Price: Free
- Age rating: 4+
- Requires: iOS 16.6 · 4 MB
- Languages: American English, French (France), Japanese, Chinese (Simplified, China), European Spanish
- Released: 2026-07-10
- Data updated: 2026-07-27
- User reviews in markdown: https://appshunter.io/ios/app/feedback-trainer/id6788974378/reviews.md

## What is Feedback Trainer?

A frequency ear training app for PA engineers and audio professionals.
The ability to quickly identify problem frequencies that cause feedback is a skill built through experience. Train your ears with this app and sharpen your instincts for the stage and studio.
Features

Visual learning with a 31-band graphic EQ display
Two modes: Phone-Friendly (100Hz–16kHz) and Full Range for external speakers (40Hz–16kHz)
Hint mode for beginners
Track your accuracy and progress history
Available in Japanese, English, Chinese, French, and Spanish


## Version history (last 2 releases)

### 1.1 — 2026-07-22

Added banner ads and a Remove Ads in-app purchase.

### 1.0 — 2026-07-10

No release notes.

## Related topics

[feedback trainer](https://appshunter.io/ios/topics/feedback-trainer)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-27.*