# iSlowFast - Timelapse and Slow Motion Videos Editor

> Video editor for slow motion, fast motion, and timelapse effects. (iPhone/iPad app by Tam Nguyen.)

- Source: https://appshunter.io/ios/app/islowfast-timelapse-and-slow-motion-videos-editor/id992355559 (this page in markdown: same URL + `.md`)
- Developer: [Tam Nguyen](https://appshunter.io/developer/691832137)
- Category: Photo & Video, Social Networking
- Price: Free
- Rating: 2.80/5 from 32 App Store ratings · 23 written reviews indexed
- Age rating: 4+
- Requires: iOS 7.0 · 21 MB
- Languages: American English, Arabic, Khmer, Catalan, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 23 more
- Released: 2015-06-04
- Data updated: 2026-08-31
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/islowfast-timelapse-and-slow-motion-videos-editor/id992355559/reviews.md

## What is iSlowFast?

iSlowFast is the ultimate app for Slow Motion, Fast Motion & Timelapse.

Get creative with iSlowFast of your videos by slowing them down and speeding them up while they play in real time. Explore the dimension of time in your videos with iSlowFast

You can trim and cut your videos in the dimension of time with iSlowFast

Pro tip: add music to your videos in iSlowFast, and your music will play nice and steady even while your videos speed up and slow down underneath the music. The effect is dramatic, and terrific.

Works best on iPhone 5s and above.

## Key features

- Create slow motion videos
- Create fast motion videos
- Create timelapse videos
- Trim and cut videos
- Add music to videos
- Sync music with speed changes

## Recent user reviews (10 of 23)

All indexed reviews: https://appshunter.io/ios/app/islowfast-timelapse-and-slow-motion-videos-editor/id992355559/reviews.md

### 1/5 — This just makes the whole video a black screen

*2021-02-10*

Doesn’t even time lapse don’t buy it’s useless please fix it sorry for the bad review but it doesn’t do any thing

### 1/5 — disgraceful

*2019-04-05, version 1.0.1*

how can an app like this even be allowed on the app store? 5 advertising pop ups in like 30 seconds from installation

### 1/5 — Bad experience

*2018-11-24*

Couldn’t even open the app. It told me to give it permission to access photos, which I did, but still, it didn’t work. Hope you have a better experience than I did.

### 3/5 — Ok👍👎

*2018-10-16, version 1.0.1*

Good when it doesn’t crash

### 1/5 — Steve.

*2017-10-28, version 1.0.1*

Seemed ok at first now rubbish, keeps kicking me out and now swamped with adverts.

### 3/5 — Eh

*2017-10-09*

it does the job pretty well but whenever i try to save my video, it keeps kicking me out of the app and it’s so triggering.

### 1/5 — Very frustrating

*2017-09-12*

Would put a -5 stars if I could... I thought this app would be like an old one that I had on my old phone called "tempo", which was very easy, simple, and straight forward to use. This will not let me adjust the speed as I intend, will change things that I had already set, is overall very frustrating to use, and plays wayyyyyy wayyyy wayyyy wayyyyy wayyyy too many ads. 
The app keeps closing on me too. Extra frustrating because the idea is great, just very poorly done...

### 3/5 — Helpful but...

*2017-07-16*

I love this to make videos but whenever I exit out of the app I can never get back in. I have to delete and reinstall the app everytime. If it didn't do that then I live it!!

### 1/5 — This isn't even a app! It's just a place to find a bunch of ads

*2017-07-04*

There is a overwhelming amount of ads on this app! I tried to use it multiple time but all it did was crash and play more ads. I definitely do not recommend this app-all it will do is take up more storage

### 3/5 — Ehh

*2016-08-05*

Great app except for the fact that you have to do everything in one sitting. If you have multiple videos to do you can't close this app and come back to it because once you do, it crashes. So what you have to do whenever you want to use it is uninstall it and then reinstall it. It's a hassle. I hope they'll update this.

## Frequently asked questions about iSlowFast

### What does iSlowFast do?

iSlowFast allows you to edit videos by adjusting their playback speed. You can create dramatic slow motion, sped-up fast motion, and timelapse effects. The app also lets you trim and cut your video footage.

### Can I add music to my videos?

Yes, you can add music to your videos within iSlowFast. A key feature is that the music will play steadily even as your video speeds up or slows down, creating a dramatic effect.

### Is iSlowFast free to use?

Based on the provided information, iSlowFast is a free application. There are no mentions of in-app purchases or advertisements, suggesting it is entirely free.

### What devices is iSlowFast compatible with?

The app works best on iPhone 5s and above. This indicates it is designed for iOS devices and requires a relatively recent model for optimal performance.

### What are some common use cases for iSlowFast?

Common use cases include creating artistic slow-motion shots of action, speeding up mundane events into engaging timelapses, or adding dynamic music to videos where the playback speed changes for a unique viewing experience.

## Version history (last 1 release)

### 1.0.1 — 2015-06-04

This app has been updated by Apple to display the Apple Watch app icon.

## Apps similar to iSlowFast

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Slow-Fast Motion Video Editor](https://appshunter.io/ios/app/slow-fast-motion-video-editor/id1039133332) | 4.7 (9,795) | Free | Photo & Video |
| [Slow Motion Video: Slowmo](https://appshunter.io/ios/app/slow-motion-video-slowmo/id1132396448) | 4.1 (399) | Free | Photo & Video |
| [Slo Mo: Make Slow Motion Video](https://appshunter.io/ios/app/slo-mo-make-slow-motion-video/id1129609742) | 3.8 (2,944) | Free | Photo & Video |
| [Splice - Video Editor & Maker](https://appshunter.io/ios/app/splice-video-editor-and-maker/id409838725) | 4.6 (426,556) | Free | Photo & Video |
| [Slow Motion Video Speed Editor](https://appshunter.io/ios/app/slow-motion-video-speed-editor/id1593112074) | 4.6 (64) | 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 |

## More apps by Tam Nguyen

- [MediaCloud - Get Streaming Music & Video Player](https://appshunter.io/ios/app/mediacloud-get-streaming-music-and-video-player/id737311241)
- [miniZip - Zip Unzip Unrar Tool](https://appshunter.io/ios/app/minizip-zip-unzip-unrar-tool/id796419138)
- [iVaultFiles - Secure ZIP Files](https://appshunter.io/ios/app/ivaultfiles-secure-zip-files/id825681636)
- [PDF Scanner:Cam Photo document](https://appshunter.io/ios/app/pdf-scannercam-photo-document/id879913296)
- [USB Transfer Files Over WiFi](https://appshunter.io/ios/app/usb-transfer-files-over-wifi/id899193711)
- [Add Music To Clips - Edited Music Videos](https://appshunter.io/ios/app/add-music-to-clips-edited-music-videos/id988725348)

All apps by Tam Nguyen: https://appshunter.io/developer/691832137

## Related topics

[make videos timelapsed](https://appshunter.io/ios/topics/make-videos-timelapsed) · [fast motion video](https://appshunter.io/ios/topics/fast-motion-video) · [fast slow video](https://appshunter.io/ios/topics/fast-slow-video)

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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 2026-08-31.*