# GM Sampler — Sampler app for performances

> Professional audio sampler and timer for live events and tabletop RPGs. (iPhone/iPad app by takashi masuda.)

- Source: https://appshunter.io/ios/app/gm-sampler/id6760892364 (this page in markdown: same URL + `.md`)
- Developer: [takashi masuda](https://appshunter.io/developer/1886650848)
- Category: Music, Games
- Price: $1.99
- Age rating: 4+
- Requires: iOS 14.0 · 99 MB
- Languages: American English
- Released: 2026-04-02
- Data updated: 2026-08-25
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/gm-sampler/id6760892364/reviews.md

## What is GM Sampler?

GMApp is a professional audio sampler and timer for game masters, tabletop RPG sessions, murder mystery events, theater, rehearsals, streaming, and live event operation. It helps you trigger music and sound effects at the right moment, organize large sound sets by scene, and run sessions from a clean mobile interface.

Designed for live use
Run background music, one-shot effects, ambience, scene transitions, and timing cues from one iPhone or iPad. GMApp is built for hosts and operators who need quick, confident control during a performance or session.

Who it is for
- Murder mystery and story game hosts
- Tabletop RPG GMs and keepers
- Theater, rehearsal, reading, and small-stage sound operators
- Streamers and event hosts who need reliable BGM and SFX playback
- Creators managing many audio files across multiple scenes

Core features

16-pad soundboard with up to 100 pages
Each page provides a 4 x 4 pad layout. Create up to 100 pages, for a total of 1,600 pads, and organize sound cues by scenario, chapter, act, location, battle, or scene.

Flexible playback modes
Choose the right behavior for each pad or session:
- Polyphony: layer ambience, BGM, and sound effects together.
- Monophonic: switch cleanly between single sound sources.
- Crossfade: transition naturally between music tracks, with adjustable fade time.
Tap behavior can also be set to retrigger from the beginning or toggle pause/resume.

Detailed pad customization
Customize each pad with a display name, color, loop setting, and gain level. Color-coded pads and clear names make it easier to operate under pressure during a live session.

Fast audio import
Import local audio files from the iOS share sheet, Google Drive, Dropbox, or ZIP archives. This makes it easy to prepare a full show, session, or scenario audio set in advance.

Bluetooth speaker keepalive option
For long quiet scenes, optional wireless speaker keepalive playback can help reduce the chance of Bluetooth or AirPlay speakers sleeping between cues.

Fullscreen timer for sessions and events
Use stopwatch or countdown mode, from short scene timers to long event blocks. Fullscreen mode makes the timer easy for everyone at the table or in the room to see.

Backup and sharing
Export and import page-level ZIP packages and full backups. Move setups between devices, preserve a production-ready sound board, or share cue structures with another operator.

Audio formats
AAC, AIF, AIFF, CAF, FLAC, M4A, MP3, OGG, and WAV are supported. Compatibility may vary by device and OS.

GMApp is made for creators who want the story, scene, or performance to flow without fighting the sound board.

Legal notice:
https://gmapp.souko.work/tokusho

## Key features

- 16-pad soundboard with 100 pages
- Flexible playback modes (polyphony, monophonic, crossfade)
- Detailed pad customization (name, color, loop, gain)
- Fast audio import from cloud services
- Fullscreen timer (stopwatch/countdown)
- Backup and sharing of setups
- Bluetooth speaker keepalive

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/gm-sampler/id6760892364/reviews.md

### 5/5 — めちゃくちゃ快適

*2026-04-09*

とても使いやすくありがたい！
それぞれの音量も変更できたりするし分かりやすい

**Developer response:** レビューいただきありがとうございます！
大変励みになります！

### 3/5 — 改善希望

*2026-04-04*

曲ごとに音量を調整できるようにしてほしい。。。

**Developer response:** コメントありがとうございます
個別パッドの設定より、音量バーにて音量が設定可能です
ループ再生の次の枠になります

## Frequently asked questions about GM Sampler

### What is GM Sampler used for?

GM Sampler is a professional audio sampler and timer for live events like tabletop RPG sessions, theater, and streaming. It helps you trigger music and sound effects, organize audio by scene, and manage timing cues.

### How many sound pads does GM Sampler offer?

GM Sampler features a 16-pad soundboard with the ability to create up to 100 pages, providing a total of 1,600 customizable pads for organizing sound cues.

### What audio playback modes are available in GM Sampler?

GM Sampler supports flexible playback modes including polyphony for layering sounds, monophonic for clean switching, and crossfade for smooth transitions between music tracks with adjustable fade times.

### Can I import my own audio files into GM Sampler?

Yes, GM Sampler allows fast audio import from local iOS files via the share sheet, as well as from Google Drive, Dropbox, and ZIP archives, making it easy to prepare your audio sets in advance.

### Does GM Sampler have ads?

No, GM Sampler does not contain advertisements. It is a paid application designed for professional use without interruptions.

### What devices is GM Sampler compatible with?

GM Sampler is designed for Apple devices and is compatible with iPhone, iPad, and iPod.

### How often is GM Sampler updated?

The latest version of GM Sampler is 1.0.2, which was last updated on May 15, 2026. This indicates a recent update, suggesting ongoing support and development.

### What is the price of GM Sampler?

GM Sampler is available for a one-time purchase price of $1.99.

## Version history (last 3 releases)

### 1.0.2 — 2026-05-15

keeps the main sampler screen awake during live use, so the device is less likely to auto-lock while you are running cues, timers, or event audio.

### 1.0.1 — 2026-04-07

タイマーの拡大表示中に、画面が自動でスリープしないよう改善しました。

### 1.0 — 2026-04-02

No release notes.

## More apps by takashi masuda

- [OtoCanvas](https://appshunter.io/ios/app/otocanvas/id6761763908)
- [Kanji Glyph Cards](https://appshunter.io/ios/app/kanji-glyph-cards/id6766445004)
- [Pythagoras Tiles](https://appshunter.io/ios/app/pythagoras-tiles/id6784497389)

All apps by takashi masuda: https://appshunter.io/developer/1886650848

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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 2026-08-25.*