# Video Speed Editor - VBooster — Video speed changer

> App to change video playback speed and add background music. (iPhone/iPad app by REAFO CO., LTD..)

- Source: https://appshunter.io/ios/app/video-speed-editor-vbooster/id1065354746 (this page in markdown: same URL + `.md`)
- Developer: [REAFO CO., LTD.](https://appshunter.io/developer/622345531)
- Category: Photo & Video, Entertainment
- Price: Free
- Rating: 4.70/5 from 153 App Store ratings · 46 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 49 MB
- Languages: American English, French (France), German (Germany), Hebrew, Hindi, Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China) and 2 more
- Released: 2015-12-15
- Data updated: 2026-08-29
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/video-speed-editor-vbooster/id1065354746/reviews.md

## What is Video Speed Editor?

VBooster is the app for changing playback speed and saving to your camera roll.

[Simple Mode]

Simple Mode is for change playback speed of entire a video easily.

-- Playback speed --
You can change playback speed from x0.1 to x10.0 by 0.1 steps.

-- Sound types --
You can choose 3 types of sounds.
1. Change pitch by speed
2. Keep pitch type A
3. Keep pitch type B

-- Music --
You can add songs as Background music.

-- Music speed --
You can choose 2 types of speed.
1. Up to a speed of the video
2. Original speed

Q.Witch types are better  " Keep pitch type A" or "B"?
A. It depends on the sound of the video. So please try both to find the ​better one.


[Time range mode]

Time range mode lets you change the playback speed of time ranges you specified.

--Add a new time range--
・Seek to the time you want to start a new time range with seek bar.
・Press [+] button to start creating time range, then move to the end of the time range.
・Then, press [check mark] button to finish adding a new time range.
・After added the time range, the playback speed setting screen will be shown, and you can change the speed.

--Overwrite a time range--
・By the default, you can't specify over another time ranges.
・To overwrite another time ranges, turn off the switch that is located on the right side.

--Change playback speed or delete a time range--
・If you want to edit playback speed or delete a time range, tap the time range on the seek bar.
・Then, the edit menu will be shown.

--Other settings--
・You can set BGM/Frame rate and so on as well as Simple Mode.
・To do that, press [gear] button to open settings.

## Key features

- Adjust video playback speed (x0.1 to x10.0)
- Choose from 3 sound pitch types
- Add background music
- Sync music speed with video
- Change speed for specific time ranges
- Overwrite time ranges
- Set frame rate

## Recent user reviews (10 of 46)

All indexed reviews: https://appshunter.io/ios/app/video-speed-editor-vbooster/id1065354746/reviews.md

### 3/5 — 私の評価はあてにならない

*2026-07-19*

素人なので使い方がわからずスローモーションとファストモーションでしか使っていない感じ

### 1/5 — エラーが発生しました。動画を書き出せませんでした。

*2026-06-07*

・シンプルモード
・別で保存した動画
・1.15倍速
・音程を維持しない

に設定を変更。

iOSは最新で、再インストールもダメでした。
アプリ内であればとても快適なのですが、そもそも書き出せないんじゃあなぁ……

というか、全部デフォルトでも書き出せないんだけど、なにこのアプリひどすぎ

**Developer response:** こんにちは。アプリを利用いただきありがとうございます。
「別で保存した動画」は、別のアプリで保存した動画だと思われますが、該当のアプリ名を教えていただけますでしょうか？

### 5/5 — Sam

*2026-05-13*

Radmacher

### 5/5 — As good as revmov

*2026-05-10, version 4.82*

Revmov is their video reverser app and it works this also does exactly what it says it does, good app.

### 4/5 — ビデオの容量

*2026-05-06*

音ズレしている動画を直すために使っているのですが、容量が元々24.4MBの動画が185MBになっちゃいます。オリジナル品質で保存できるモード的なものを追加して欲しいです

### 4/5 — なかなか良き

*2026-04-23*

スローで再生そして動画を気に入った場面で止めて画像保存出来る
ただ、拡大して見る事が出来ればパーフェクト💯

**Developer response:** こんにちは、アプリをご利用いただきありがとうございます。
シンプルモードの✂️ハサミの隣にある四角いアイコンを押すと、拡大して見るに近い効果を得ることができると思いますので、ぜひお試しくださいませ。
今後ともどうぞよろしくお願いします。

### 5/5 — 最高っす

*2025-12-16*

これだけが唯一スローや爆速にできるアプリそしてなにより他のアプリとかより書き出しが早い！神！

### 5/5 — Matt

*2025-11-28, version 4.81*

Radmacher

### 5/5 — 使いやすいのですが

*2025-11-09*

設定や変更、操作はとてもわかりやすいし速度の調整もいろいろできて無料で言う事なし!なのですが、、、保存ができません泣1.0%から進みません、、、残念すぎます、、

**Developer response:** こんにちは。いつもご利用いただきありがとうございます。

以下をお試しいただけますでしょうか？
・1%から進まない状態から一度キャンセルをして編集画面に戻り、再度保存を試す
・アプリを1度消して再インストールして保存を試す

もしこれらをお試しいただいても保存できない場合、再現手順を把握したいので以下の情報を教えていただければ幸いです。

▫️他の動画でも発生するのかどうか
特定の動画と設定の場合み保存できないのか、標準カメラで撮影した動画など他の動画でも保存ができないのかどうか
▫️動画の種類
iPhoneのカメラで撮影した動画 or 他のアプリなどで編集した動画
▫️使用している機能
シンプルモード or タイムレンジモード
▫️保存しようとしている速度
x0.5, x2.5など

手元ではiOS18とiOS26(19)でカメラで撮影した動画にて試しましたが、一応問題なく書き出せている状態でございます。

お手数をおかけしますが、追加の情報をいただければ幸いです。

### 3/5 — たまにバグる

*2025-10-11*

たまに動画を読み込む時100%になってフリーズします

## Frequently asked questions about Video Speed Editor

### What does VBooster do?

VBooster allows you to change the playback speed of your videos, from very slow to very fast. You can also add background music and control how its speed relates to your video. The app offers two main modes: Simple Mode for the entire video and Time Range Mode for specific sections.

### How can I change the speed of my video?

In Simple Mode, you can adjust the playback speed of the entire video from x0.1 to x10.0 in 0.1 increments. In Time Range Mode, you can select specific sections of your video and set different playback speeds for each.

### Can I add music to my videos?

Yes, you can add songs as background music to your videos. You have the option to either match the music's speed to the video's speed or keep the music at its original speed.

### Is VBooster free to use?

The application is free to download and use, but it does contain advertisements. There may also be in-app purchases available for additional features or to remove ads.

### What are the sound pitch options?

You can choose from three sound pitch types when changing video speed: changing pitch by speed, keeping pitch type A, or keeping pitch type B. The best option depends on the original sound of your video, so it's recommended to try both A and B to see which sounds better.

## Version history (last 5 releases)

### 4.85 — 2026-08-07

Thank you for using our service.
- Fixed minor bugs.

### 4.84 — 2026-07-29

Thank you for using our service.
- Fixed minor bugs.

### 4.83 — 2026-06-25

Thank you for using our service.
- Fixed minor bugs.

### 4.82 — 2026-05-06

Thank you for using our service.
- Fixed minor bugs.

### 4.81 — 2025-06-30

Thank you for using our service.
- Fixed minor bugs.

## Apps similar to Video Speed Editor

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [InShot - Video Editor](https://appshunter.io/ios/app/inshot-video-editor/id997362197) | 4.8 (2,479,638) | Free | Photo & Video |
| [Slow-Fast Motion Video Editor](https://appshunter.io/ios/app/slow-fast-motion-video-editor/id1039133332) | 4.7 (9,795) | Free | Photo & Video |
| [Easy Video Speed Editor](https://appshunter.io/ios/app/easy-video-speed-editor/id1545780520) | 4.6 (817) | Free | Photo & Video |
| [CapCut: Photo & Video Editor](https://appshunter.io/ios/app/capcut-photo-and-video-editor/id1500855883) | 4.6 (1,118,649) | Free | Photo & Video |
| [Slow Motion Video & Speed Up](https://appshunter.io/ios/app/slow-motion-video-and-speed-up/id919892642) | 3.7 (240) | Free | Photo & Video |
| [Slow Motion' Video Editor](https://appshunter.io/ios/app/slow-motion-video-editor/id979234250) | 4.2 (21,360) | Free | Photo & Video |

## More apps by REAFO CO., LTD.

- [12Things - Simple Todo's and reminder.](https://appshunter.io/ios/app/12things-simple-todos-and-reminder/id622345468)
- [LookApp - ASO Tool](https://appshunter.io/ios/app/lookapp-aso-tool/id650382488)
- [QRcodeGear - Read & Create](https://appshunter.io/ios/app/qrcodegear-read-and-create/id680258871)
- [Simplytics](https://appshunter.io/ios/app/simplytics/id959323896)
- [Squarely - Multi Video Editor](https://appshunter.io/ios/app/squarely-multi-video-editor/id986275550)
- [RFV - Rotate & Flip Video](https://appshunter.io/ios/app/rfv-rotate-and-flip-video/id1038299582)

All apps by REAFO CO., LTD.: https://appshunter.io/developer/622345531

## Related topics

[video speed editor pitch](https://appshunter.io/ios/topics/video-speed-editor-pitch) · [video speed changer](https://appshunter.io/ios/topics/video-speed-changer) · [pitch video](https://appshunter.io/ios/topics/pitch-video) · [video speed adjuster](https://appshunter.io/ios/topics/video-speed-adjuster) · [video speed pitch](https://appshunter.io/ios/topics/video-speed-pitch) · [video loop speed](https://appshunter.io/ios/topics/video-loop-speed) · [speed videos change](https://appshunter.io/ios/topics/speed-videos-change) · [fast speed video](https://appshunter.io/ios/topics/fast-speed-video) · [video speed editor](https://appshunter.io/ios/topics/video-speed-editor) · [speed video edit](https://appshunter.io/ios/topics/speed-video-edit) · [speed videos](https://appshunter.io/ios/topics/speed-videos) · [video speed editor time](https://appshunter.io/ios/topics/video-speed-editor-time) · [video voice speed](https://appshunter.io/ios/topics/video-voice-speed)

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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 2026-08-29.*