# Cooller: Smart Audio Converter — Format Toolkit

> Format Toolkit (iPhone/iPad app by Yevhenii Harkusha.)

- Source: https://appshunter.io/ios/app/cooller-smart-audio-converter/id6807784589 (this page in markdown: same URL + `.md`)
- Developer: [Yevhenii Harkusha](https://appshunter.io/developer/1878619538)
- Category: Photo & Video
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 2 MB
- Languages: English
- Released: 2026-09-14
- Data updated: 2026-10-10

## What is Cooller?

A file gets imported, and the conversion screen shows bitrate, sample rate, channel count, and volume before anything happens to it.

Audio and video sources, MP3, WAV, FLAC, M4A, OGG among them, plus audio pulled from video, sit in one place after import. Peak normalization is an optional pass. Trimming and silence removal happen in the same step, and the result writes into a local library rather than a desktop application.

The library grows with each conversion and stays on the phone, with nothing sent to a server. Settings from one file become the starting point for the next, so a repeated workflow needs fewer taps.

On-device extras sit alongside the core conversion path. Transcription, speaker labeling, and a short summary run locally, without changing the main conversion.

A wrong sample rate mismatches with playback hardware, a wrong channel count changes how a mix sounds, and a trim point lands where it was set. None of this depends on a connection.

## Is Cooller safe?

Not enough ratings yet to assess Cooller.

## Is Cooller legit?

Cooller: Smart Audio Converter has limited verification signals. The AppsHunter Legitimacy Score for Cooller is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.3 — 2026-09-24

A few small issues were fixed
Some details now work better

### 1.2 — 2026-09-14

No release notes.

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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 2026-10-10.*