# Slow N' Fast Video

> App to create slow and fast motion videos with synchronized soundtracks. (iPhone/iPad app by Sebastien BUET.)

- Source: https://appshunter.io/ios/app/slow-n-fast-video/id563557684 (this page in markdown: same URL + `.md`)
- Developer: [Sebastien BUET](https://appshunter.io/developer/321941181)
- Category: Photo & Video, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 8.0 · 66 MB
- Languages: English, French, German, Italian, Portuguese, Spanish, Thai
- Released: 2012-10-27
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/slow-n-fast-video/id563557684/reviews.md

## What is Slow N' Fast Video?

Easily and quickly transform your videos into slow and fast motion movies, right on your iPhone and iPad. Unlike many other apps, Slow N' Fast also modifies the video soundtracks to keep them in sync !

Slow N' Fast is very easy to use: just pick a video, or record a new one, then chose the speed of your new video, and let the app do its magic. Preview the slow motion or fast motion versions of your video and save it to your photo library, send it by email, or share it to other apps.

Special features:
- Slow and fast motion with soundtrack modification
- Export your slow and fast motion videos at resolution up to 1080p with no quality loss !
- Export your videos to other apps installed on your device, share them by email or save them in your photo library
- Ultra fast video processing and rendering
- Intuitive and simple user interface

If you want to speed up or slow down further your videos, just speed up/slow down your videos, then save them to your camera roll and then import thes new videos to speed them up/slow them down again.

NOTE: you shall allow the app to access your photo library; if you don't the app won't be able to import and export videos from and to your camera roll. You can change this setting in the Settings app -> Privacy -> Photos. 

If you have any issue with the app: send us your bug reports at support@seb-appstore.com and we'll be able to help you and fix the app. The app is compatible with all the listed iDevices; if you experience some issues with your device, send us an email at support@seb-appstore.com. 

  Check out many other great iOS apps at www.SEB-APPSTORE.com

## Key features

- Slow and fast motion video creation
- Soundtrack synchronization
- Export up to 1080p resolution
- Fast video processing
- Intuitive user interface
- Share via email and other apps

## Recent user reviews (10 of 27)

All indexed reviews: https://appshunter.io/ios/app/slow-n-fast-video/id563557684/reviews.md

### 1/5 — Not working

*2019-03-14, version 1.4*

This is not working for me, the app will not access my videos.

### 4/5 — Bug

*2016-04-09, version 1.31*

Hello. I really enjoy this app, but there's a problem. Whenever I try to open the app, it just crashes me out like I can't use the app. So this bug really needs to be fixed IMMEDIATELY!

Sincerely,
Michael Jackson Content

### 1/5 — User

*2015-08-25, version 1.27*

Working well at first time. But the app keeps the crashes anytime in use. No bugs fixing is very rude for a not-for-free kinda app.

### 1/5 — Piece of Crap!!

*2015-08-04, version 1.27*

Keeps crashing. And when it does work I find there's only 1 slomo setting. As I said, garbage!

### 2/5 — Okay, but no customization!

*2014-12-05, version 1.27*

You can vary how fast or slow your videos go! It's only half or double no slower or faster! If the speed could be customized per say like have it go 1 fourth of the speed or 5 times the speed I would rate it much higher!

### 3/5 — Keeps Crashing!

*2014-02-04, version 1.27*

I bought this app thinking that I could make funny fast motion videos, but every time that I make a new video the app crashes before I can watch them. It's very frustrating (almost as frustrating as floppy birds) :(

### 1/5 — Okay

*2013-11-22, version 1.26*

So far it has been no use. Not fast enough. Sorry

### 1/5 — Can't even start it.

*2013-10-30, version 1.21*

The app crashes on startup. Deleted app and reloaded. No luck. Waste of money.

### 1/5 — Took my money and ran!

*2013-10-27, version 1.21*

Installed but won't launch. Same as theft in my book!

### 1/5 — No good

*2013-10-27, version 1.21*

App no good it don't open. I want my money back. Even after restart.

## Frequently asked questions about Slow N' Fast Video

### How do I use Slow N' Fast to change video speed?

Simply pick an existing video or record a new one within the app. Then, select your desired speed (slow or fast) and let the app process it. You can preview the result before saving or sharing.

### Does Slow N' Fast keep the audio in sync with speed changes?

Yes, a key feature of Slow N' Fast is its ability to modify the video soundtracks to keep them in sync with the altered playback speed.

### What resolutions can I export my videos in with Slow N' Fast?

You can export your slow and fast motion videos at resolutions up to 1080p. The app ensures no quality loss during these exports.

### Can I share videos created with Slow N' Fast to other apps?

Absolutely. You can export your edited videos to other apps installed on your device, send them via email, or save them directly to your photo library.

### How often is Slow N' Fast updated?

The app was last updated on March 29, 2019, with version 2.0. While updates have not been frequent recently, the app is compatible with all listed iDevices.

### What is the age rating for Slow N' Fast?

Slow N' Fast has an age rating of 4+, making it suitable for a wide range of users. It is available on iPhone and iPad.

### What should I do if I encounter an issue with Slow N' Fast?

If you experience any issues or have bug reports, you can send an email to support@seb-appstore.com. The developer will assist you and work on fixing the app.

### How can I make my videos even slower or faster with Slow N' Fast?

To achieve more extreme speed changes, you can export your video after the initial speed adjustment, then import that newly created video back into Slow N' Fast to apply further speed modifications.

## Version history (last 1 release)

### 2.0 — 2019-03-29

Minor bug fixes

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## More apps by Sebastien BUET

- [iStrobo](https://appshunter.io/ios/app/istrobo/id322275101)
- [Locked](https://appshunter.io/ios/app/locked/id330807045)
- [iLash - The virtual Whip](https://appshunter.io/ios/app/ilash-the-virtual-whip/id342999749)
- [Year Countdown](https://appshunter.io/ios/app/year-countdown/id343118794)
- [Resize Your Pictures](https://appshunter.io/ios/app/resize-your-pictures/id366796722)
- [PopArt FX](https://appshunter.io/ios/app/popart-fx/id369320950)

All apps by Sebastien BUET: https://appshunter.io/developer/321941181

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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 2026-06-10.*