# Sailer: Transcribe & Practice — Music Speed/Pitch Changer

> Audio player with waveform seeking, loop, speed, and pitch adjustment. (iPhone/iPad app by Shu Kyogoku.)

- Source: https://appshunter.io/ios/app/sailer-transcribe-and-practice/id6756638375 (this page in markdown: same URL + `.md`)
- Developer: [Shu Kyogoku](https://appshunter.io/developer/1703508274)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Rating: 4.30/5 from 4 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 14 MB
- Languages: American English, Japanese, Chinese (Simplified, China)
- Released: 2026-01-02
- Data updated: 2026-10-31
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sailer-transcribe-and-practice/id6756638375/reviews.md

## What is Sailer?

Sailer is a simple audio file player with a waveform display. Just scroll the waveform and go straight to the moment you’re looking for — more intuitive and precise than dragging a tiny seek bar.

The marker feature makes it easy to repeat specific parts, perfect for transcription, music practice, language learning, and more.

Supports MP3, M4A, WAV, FLAC, MP4, and other common formats.

Features:

• Seek by scrolling the waveform.
• Pinch-to-zoom for more precision.
• Use markers to bookmark specific positions*.
• Double-tap (or two-finger tap) between markers to play only that region (loop supported).
• Adjust playback speed from 0.25× to 4.0×.
• Adjust the pitch and apply audio effects.
• Add notes for future reference.

*Markers and notes are saved as a sidecar file, so your original audio file remains unmodified.

Pro Features (one-time purchase):

• Display a spectrogram.
• Export the selected region.
• Export markers as TXT, CSV, or JSON.
• Transcribe the selected region.

## Key features

- Waveform seeking
- Adjustable playback speed
- Adjustable pitch
- Marker system for looping
- Spectrogram display (Pro)
- Audio export (Pro)

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sailer Pro | $19.99 | one-time |
| 7-Day Trial | Free | one-time |


## Is Sailer safe?

Not enough ratings yet to assess Sailer.

## Is Sailer legit?

Sailer: Transcribe & Practice appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Sailer is 70 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/sailer-transcribe-and-practice/id6756638375/reviews.md

### 2/5 — Locking export behind pro when it was free before? Not grandfathering long time users? A shame.

*2026-08-17*

I understand devs gotta make money. But locking features away that were available behind a paywall… it’s a poor solution. Previous owners weren’t grandfathered in either. I really liked this app. Elegant. Well coded. Could handle hour long recordings easily. A shame.

## Frequently asked questions about Sailer

### What is Sailer used for?

Sailer is used for precise audio playback control, making it ideal for music practice, transcription, and language learning. Its waveform display allows for intuitive navigation and the marker feature enables easy repetition of specific audio sections.

### Does Sailer have ads?

No, Sailer does not contain advertisements. The app is free to download and use, with optional Pro features available as a one-time purchase.

### What audio formats does Sailer support?

Sailer supports common audio formats including MP3, M4A, WAV, and FLAC, as well as video formats like MP4.

### How does the marker feature in Sailer work?

The marker feature in Sailer allows you to bookmark specific positions within an audio file. You can then double-tap or two-finger tap between markers to play only that region, with loop support for continuous playback.

### What are the Pro features in Sailer?

The Pro features, available via a one-time purchase, include displaying a spectrogram, exporting selected audio regions, exporting markers as TXT, CSV, or JSON, and transcribing selected audio regions.

### On which devices can I use Sailer?

Sailer is compatible with iPhones and iPads, indicated by its support for these devices.

### How often is Sailer updated?

The latest version of Sailer is 2.1.1, which was released on October 29, 2026. This suggests a relatively recent update, though the frequency is not explicitly stated.

### What is the age rating for Sailer?

Sailer has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 2.1.1 — 2026-10-29

• Stability improvements

### 2.1.0 — 2026-10-22

• Added Simplified Chinese localization
• Adjust pitch in cents
• Stability improvements

### 2.0.1 — 2026-08-29

・Stability improvements.

### 2.0.0 — 2026-08-17

Pro version (one-time purchase) is now available.

・Added pitch adjustment and audio effects
・Loop can now be toggled during playback
・Added support for Opus files
・Markers can now be exported. (Pro)
・Some features have moved to the Pro version

### 1.5.0 — 2026-06-08

• You can now display a spectrogram.

## Apps similar to Sailer

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| --- | --- | --- | --- |
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| [Field. - Field Recorder](https://appshunter.io/ios/app/field-field-recorder/id6760171759) | 4.9 (8) | Free | Music |
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| [Cloudflow Music – NAS  Player](https://appshunter.io/ios/app/cloudflow-music-nas-player/id6761190341) | 3.3 (6) | Free | Music |
| [Offline Music Player: lossless](https://appshunter.io/ios/app/offline-music-player-lossless/id6758553910) | 3.5 (4) | Free | Music |
| [Mixroom - AI Music Editor](https://appshunter.io/ios/app/mixroom-ai-music-editor/id6759779450) | 3.7 (3) | Free | Music |

## More apps by Shu Kyogoku

- [Lossless Audio Extractor](https://appshunter.io/ios/app/lossless-audio-extractor/id6462839131)
- [Epoch: History Notes](https://appshunter.io/ios/app/epoch-history-notes/id6470111481)

All apps by Shu Kyogoku: https://appshunter.io/developer/1703508274

## Related topics

[sailer](https://appshunter.io/ios/topics/sailer) · [shu kyogoku](https://appshunter.io/ios/topics/shu-kyogoku) · [slow read](https://appshunter.io/ios/topics/slow-read) · [audio file player](https://appshunter.io/ios/topics/audio-file-player)

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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 2026-10-31.*