# Chopper: Video/Audio Shortener — AI based silence remover > AI-powered silence remover for video and audio, processing on-device. (iPhone/iPad app by Shuichi Tsutsumi.) - Source: https://appshunter.io/ios/app/chopper-videoaudio-shortener/id1560947520 (this page in markdown: same URL + `.md`) - Developer: [Shuichi Tsutsumi](https://appshunter.io/developer/342740494) - Category: Photo & Video, Productivity - Price: $1.99 - Rating: 4.00/5 from 23 App Store ratings · 36 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 2 MB - Languages: American English, Japanese - Released: 2021-04-23 - Data updated: 2026-08-18 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/chopper-videoaudio-shortener/id1560947520/reviews.md ## What is Chopper? This app can automatically remove silences in your video/audio by detecting human voice using AI. It can be used for audio, too. Good for YouTube, podcasts, etc. --------------------------------- How good the AI based silence removal is? --------------------------------- Conventional silence cutters (based on audio levels) cannot cut out noise, rustling, etc. This app's AI (deep learning) technology identifies only the "human voice" and can remove those unnecessary parts. --------------------------------- All is done on-device! --------------------------------- All processing is done on the iPhone/iPad, so you can use it offline. No data is sent to the server, so you can rest assured of security and privacy. --------------------------------- How to use --------------------------------- Just select a video and tap the "Export" button! --------------------------------- Features of Chopper --------------------------------- - "Cut level" (the strength of the cut) can be adjusted in three levels. - You can choose the export quality. - Supports not only video but also audio files. - You can also extract the audio from the video. - You can also reduce the size (capacity) of the video. Select "Medium Quality". ## Key features - AI-based silence removal - Human voice detection - Offline processing - Adjustable cut level - Video and audio support - Extract audio from video - Reduce video file size ## Recent user reviews (10 of 36) All indexed reviews: https://appshunter.io/ios/app/chopper-videoaudio-shortener/id1560947520/reviews.md ### 1/5 — Rarely works *2026-04-20* When it works it idea the job well! But rarely work la really! ### 1/5 — そもそも使用できない *2026-04-18* 30分程度の音声ファイルをアップロードしたらアプリが落ち、何回トライしても同じことが起こる。 使用機種はiphone15なので性能が特別低いわけではない。 全く使えないので買って後悔している。 ### 1/5 — 使えません *2026-04-17* 全然使えない ### 4/5 — Stored Data Does Not Clear… *2026-02-08* I have to uninstall and reinstall constantly because the data that should be temporary doesn’t clean up and the size of this app permanently balloons to multiple GBs. ### 5/5 — Sensacional! *2025-10-08, version 2.5.0* Sabe aquele app escondido, com poucas avaliações, mas que é uma mão na roda? Pois é. Eu me surpreendi com a praticidade e simplicidade do app que entrega os resultados prometidos. Parabéns ao desenvolvedor! ### 5/5 — かなり良い *2025-10-08* iPhoneだけで完結できる上に300円でこれはかなり良いと思います！ ただ処理を頑張ってくれている時に画面を触ってしまうとアプリが落ちます。笑 でもそこだけ気を付ければ大丈夫です。 だいぶ前のコメントで「切り抜きが厳しすぎて不自然になる」と書いてる人がいますが、全然そんな事ないですし、そもそも自分で程度を3段階から選べます。 (個人的にはhighモードですら「もっと厳しくカットして欲しい」と思うので、カット後の動画をもう一度highモードでカットしてもらってます笑) あと他の人も書いているように、全く無料体験できないのはかなり足を引っ張ってるでしょうね…。 たった300円とはいえ、試せずに課金は普通不安だと思います。 でも自分の場合はチャレンジしてみて大正解でした！ ### 2/5 — 直して欲しい *2025-06-20* ポッドキャスト音声にも使えるとの事でしたが勝手に声の1部も消されたり短縮されてたり結局二度手間！課金してこれか〜となったので使用はやめました。 もうちょい直されて高性能なら使いたいなと思います ### 5/5 — 全く無意味 *2025-05-13* 全然音声が消えなくて使えない ### 4/5 — 思ってたのと違った *2025-05-10* まず無料でどんなアプリなのか操作だけでもできると嬉しいです。動画のインポートだけでなく、ボイスレコーダー（声の録音）ボタンがあって自動カット機能があるとめちゃくちゃ助かります。 ### 2/5 — 人の声の識別はなし *2025-04-26* 2025年4月v2.5.0 時点のコメントです(数ヶ月の改良を期待して断面残します) 人の声を識別されているように感じられず、背景の作業音がカタカタしてる限り、カットされませんでした。300円アプリでAI組み込めるとは経済的にありえないとは想定しつつ、アプリの説明をみて一縷の期待を持って、物は試しと入手しましたが、やはりダメでした。 本当に人の声をAIで識別するなら、3000円でも売れるし法人での大量需要もあると思うので、ぜひ開発頑張って頂けますことを期待します。 ## Frequently asked questions about Chopper ### What does Chopper do? Chopper is an application that automatically removes silences from video and audio files. It utilizes AI-powered deep learning technology to specifically identify and cut out pauses where human voices are not present, distinguishing them from background noise. ### How does the AI silence removal work? Unlike traditional silence cutters that rely on audio levels, this app's AI focuses on detecting human voices. This allows it to accurately remove unnecessary parts of recordings, such as rustling or ambient noise, while preserving spoken content. ### Is this app free to use? Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, suggesting a completely free user experience. ### Can I use this app offline? Absolutely. All processing is performed directly on your iPhone or iPad, meaning you can use the app offline without an internet connection. This also ensures your data remains private as nothing is sent to a server. ### What kind of files can I use with Chopper? The app supports both video and audio files. You can also extract the audio track from your video files, and choose different export qualities, including an option for 'Medium Quality' to reduce the overall video file size. ## Version history (last 5 releases) ### 2.5.0 — 2024-12-04 The logic for detecting silent sections has been improved, resulting in even more natural cuts. ### 2.4.1 — 2024-11-13 The accuracy has been greatly improved in version 2.4! Please try it out on videos and audio that didn't work well before. - Now supports clearing the cache. Unnecessary cache files in the app will be automatically deleted. - You can now select Chopper from the iOS sharing options. Try selecting a video or audio file from an app like “Photos” or “Voice Memos” and pressing the share button. ### 2.4.0 — 2024-11-02 - The silence detection accuracy has been improved! - Several bugs have been fixed and stability improved. ### 2.3.0 — 2024-10-24 We have added shortcut actions. You can create shortcuts using the following two actions in the ‘Shortcuts’ app. - Open the selected video in Chopper and detect silent sections - Extract audio from the selected video ### 2.2.0 — 2024-04-14 - Bug fixes - visionOS support ## Apps similar to Chopper | App | Rating | Price | Category | | --- | --- | --- | --- | | [ByeNoise - Video Audio Editor](https://appshunter.io/ios/app/byenoise-video-audio-editor/id1560151837) | 4.4 (2,120) | Free | Photo & Video | | [InShot - Video Editor](https://appshunter.io/ios/app/inshot-video-editor/id997362197) | 4.8 (2,471,998) | Free | Photo & Video | | [VSSR](https://appshunter.io/ios/app/vssr/id1522193999) | 4.0 (2) | Free | Photo & Video | | [JumplyCut: video shortener](https://appshunter.io/ios/app/jumplycut-video-shortener/id1585552063) | 3.5 (2) | Free | Photo & Video | | [Denoise Audio - Remove Noise](https://appshunter.io/ios/app/denoise-audio-remove-noise/id1508879019) | 4.3 (7) | $2.99 | Photo & Video | | [Denoise.FX for Audio & Video](https://appshunter.io/ios/app/denoisefx-for-audio-and-video/id1623119654) | 4.5 (411) | Free | Photo & Video | ## More apps by Shuichi Tsutsumi - [Prince Shōtoku Player](https://appshunter.io/ios/app/prince-shotoku-player/id427142794) - [High-Speed Photo Viewer SOMATO](https://appshunter.io/ios/app/high-speed-photo-viewer-somato/id1566199421) - [Long-time Video Camera TOTOC](https://appshunter.io/ios/app/long-time-video-camera-totoc/id1583927275) All apps by Shuichi Tsutsumi: https://appshunter.io/developer/342740494 ## Related topics [chopper](https://appshunter.io/ios/topics/chopper) --- *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 2026-08-18.*