# Slow Motion AI — Slow down your videos using AI

> AI-powered video editor for creating smooth, frame-interpolated slow-motion effects. (iPhone/iPad app by Johannes Tiwisina.)

- Source: https://appshunter.io/ios/app/slow-motion-ai/id1574708469 (this page in markdown: same URL + `.md`)
- Developer: [Johannes Tiwisina](https://appshunter.io/developer/465961350)
- Category: Photo & Video
- Price: Free with in-app purchases
- Rating: 4.89/5 from 19 App Store ratings · 19 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 70 MB
- Languages: Dutch, English, French, German, Italian, Japanese, Portuguese, Chinese, Spanish
- Released: 2022-01-04
- Data updated: 2026-06-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/slow-motion-ai/id1574708469/reviews.md

## What is Slow Motion AI?

Every video is composed of a certain number of images, or frames per second. Slow Motion AI uses a state of the art neural network to guess the frames in between the existing frames of your video, hereby making your video longer, thus slower, while maintaining its original flow. Keeping its frame rate, the video stays as smooth as before.

Other slow motion apps only increase the time delay between the frames of the video. This way your video starts to stutter and doesn’t look natural. By increasing the frame amount and actually adding new images to the video the result is smooth and as natural as the original recording.

Videos of length up to 5 seconds can be converted for free.

## Key features

- AI frame interpolation
- Smooth slow-motion effect
- Natural video flow
- Frame rate preservation
- Free up to 5-second videos

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium Functions | $4.99 | one-time |


## Recent user reviews (10 of 19)

All indexed reviews: https://appshunter.io/ios/app/slow-motion-ai/id1574708469/reviews.md

### 5/5 — Great app

*2023-08-16, version 1.1*

Amazing app!

### 5/5 — My opinion has changed for the better.

*2022-12-03, version 1.0.7*

For some reason I am unable to edit my original comment. I do not know why so I am writing another one. when I first downloaded this program it was extremely buggy. if it was given a particularly long or hard video to work with it would crash but it would not crash until it had finished so you would wait a good 3 to 5 minutes oh my defined out that it didn’t work and you would have to try again. 
This bug has been fixed!
Any reviews that talk about it crashing are most likely old. Either that or this comment has become old and they are crashing again. I have not had a crash in a good month and I use this a lot. when I have a bank account that is no longer overdrawn I would like to get a subscription for the premium service. I think it is worth it and I am grateful to this developer for making this program. 
Also when it comes to customer service he will get back to you. It might take some time but he will get back to you and I can respect a busy person. before I wrote my last review I had sent an email with my issue. I wanted to purchase the premium but I was not willing to do it if the program can’t even handle the regular videos. also I don’t like leaving bad reviews on things. I’d much rather talk with the developer privately if I have an issue. I waited a week before assuming he wasn’t going to write back. now I can’t unwrite my last review for some reason. 
The long and short of it is that this is a good program that does what it says it’s going to do. Would definitely recommend. if the developer could make a version of this that is designed to work with animation at 12 frames per second that would be really cool. just an idea. That is what I use this for.

### 3/5 — Leider nur 3 Sterne

*2022-09-01, version 1.0.7*

Die Umsetzung der App ist sehr gelungen und sehr simpel gehalten, jedoch möchte ich anmerken, dass ich mein iPhone nicht sperren kann, ohne dass die App aufhört das Video zu bearbeiten. Wenn ich mein iPhone über 30 Sekunden gesperrt lasse oder mich in einer anderen App befinde, wird das Video als fertig angezeigt, kann aber nicht abgespielt werden und wenn man es speichert, wird es nicht in der Fotos App angezeigt.

### 5/5 — Sehr gut geeignet

*2022-08-26, version 1.0.7*

Premium muss schon sein! 
Richtig gute Umsetzung

### 5/5 — Qualitätsapp

*2022-08-26, version 1.0.7*

Super tolle App. Ich bin Storm Hunter und nutze sie dann um die Blitze eines Thunderstorms nochmal in Slow Motion  zu betrachten. Bin mit der Qualität sehr zufrieden. 👍🏼👍🏼

Gruß Harald

### 4/5 — Funktioniert sehr gut

*2022-08-26, version 1.0.7*

Die App funktioniert einwandfrei, kurze Videos werden schnell in Slow Motion umgewandelt. Ein Stern Abzug, weil HD Qualität gekauft werden muss, jedoch handelt es sich um einen Einmalkauf und kein teures Abomodell 👍🏻.

### 1/5 — Crashing

*2022-08-07, version 1.0.6*

Constantly crashes. Only have had one successful render

### 1/5 — Crashing

*2022-07-15, version 1.0.6*

This app used to be great and work so well every time and I loved it. I even paid for the better version but now I think I’ve wasted my money! Now, every time before it’s about to finish, the app crashes and sends me off the app and it is very frustrating. I hope it gets fixed because it used to be so helpful

### 2/5 — Viel Erhofft, noch größere Enttäuschung!

*2022-06-17, version 1.0.6*

Die App lässt sich nicht mit der Familie Teilen, was mega schade ist, weil wofür gibt es sonst das Feature?!
Das Video welches ich verlangsamen möchte, läuft immer bis kurz vor Ende, und dann stürzt die App ab!! Dies passiert leider sehr sehr regelmäßig!! Und es kommt auch mal vor, dass man das Handy 10-20 Min nicht benutzen kann, da die App läuft und dann kurz vor Ende abstürzt ist mehr als traurig! (IPhone 13 Pro Max)
Wollte es nun auf meinem iPhone 8 und XS testen, jedoch müsste ich die App dort jeweils nochmal kaufen!! Trotz Familienfreigabe ist eine Wiederherstellung der Pro Version nicht möglich!

### 1/5 — Constantly Crashes

*2022-05-26, version 1.0.6*

Everything I do I cant use it. Need major fixing

## Frequently asked questions about Slow Motion AI

### How does Slow Motion AI create slow-motion videos?

Slow Motion AI uses a neural network to generate new frames between existing ones in your video. This process adds more frames, making the video longer and slower while maintaining a natural, smooth flow.

### What is the maximum video length I can convert for free with Slow Motion AI?

You can convert videos up to 5 seconds in length for free. For longer videos, in-app purchases are available.

### Does Slow Motion AI cause videos to stutter like other apps?

No, Slow Motion AI is designed to avoid stuttering. By adding new, intelligently guessed frames, it ensures the video remains smooth and natural, unlike apps that just increase the delay between existing frames.

### What devices is Slow Motion AI compatible with?

Slow Motion AI is available for iPhone, iPad, and iPod devices. It is designed to work across Apple's mobile ecosystem.

### How often is Slow Motion AI updated?

The app was last updated on July 25, 2023, with version 1.1. This indicates active development and potential for future improvements and features.

### What is the age rating for Slow Motion AI?

Slow Motion AI has an age rating of 4+, making it suitable for a wide range of users, including younger audiences interested in video editing.

### What do users like most about Slow Motion AI?

Users appreciate the app's ability to create exceptionally smooth slow-motion effects that look natural. The AI-driven frame interpolation is a key feature that sets it apart from other video editing tools.

### Is Slow Motion AI available on Android devices?

Based on the provided information, Slow Motion AI is currently only supported on iPhone, iPad, and iPod devices. There is no mention of Android compatibility.

## Version history (last 5 releases)

### 1.1 — 2023-07-25

- 2-3x faster conversion

### 1.0.8 — 2023-07-23

- bug fixes

### 1.0.7 — 2022-08-18

- a bug that produced crashes at the end of the conversion process is now fixed
- the app doesn't go to sleep mode (which interrupted the conversion process)

### 1.0.6 — 2022-03-27

- some bug fixes

### 1.0.5 — 2022-02-11

Minor bug fixes

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## More apps by Johannes Tiwisina

- [I read it in a book](https://appshunter.io/ios/app/i-read-it-in-a-book/id1510363973)
- [Nightmare in the Woods](https://appshunter.io/ios/app/nightmare-in-the-woods/id6447069668)
- [Center Court Tennis](https://appshunter.io/ios/app/center-court-tennis/id6470517089)
- [Darts Voice Commander](https://appshunter.io/ios/app/darts-voice-commander/id6745514800)

All apps by Johannes Tiwisina: https://appshunter.io/developer/465961350

## Related topics

[slow motion ai](https://appshunter.io/ios/topics/slow-motion-ai)

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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 2026-06-01.*