# STRATUM Slit Scan — Time Displacement Camera

> Digital slit scan camera app for creating time-displacement photos and videos. (iPhone/iPad app by Narumi Inada.)

- Source: https://appshunter.io/ios/app/stratum-slit-scan/id1525313915 (this page in markdown: same URL + `.md`)
- Developer: [Narumi Inada](https://appshunter.io/developer/1347729163)
- Category: Photo & Video, Productivity
- Price: $1.99
- Rating: 5.00/5 from 2 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.5 · 1 MB
- Languages: American English
- Released: 2020-11-19
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/stratum-slit-scan/id1525313915/reviews.md

## What is STRATUM Slit Scan?

-Features-
• Eight kinds of slit scans are possible with four kinds of slit patterns and reverse scan.
• Tap the shutter button to take a photo.
• Press and hold the shutter button or drag to the right to start recording.
• Models with a high-speed camera can shoot at 240 to 1 FPS.
• The slice size (number of strips) can be set up to around 500. (*1)
• Manual focus lock, exposure adjustment
•Use the camera flip button to switch between the inside and outside cameras. You can switch to another camera such as a triple camera by pressing and holding it.
• Equipped with external display output for performance art and installation.
• You can preview the taken photos and videos in the app.


-Overview-
Slit scan is different from the actual time when shooting with an analog camera by attaching a paper with a slit in front of the camera lens, lengthening the exposure time and moving it in the vertical direction with the slit. It is a technique to take the exposure of a single photo.

Strictly speaking, STRATUM does not install a slit in front of the camera like slit scan, but it stores digitally captured data in memory, slices it in any direction, combines it for each frame and shoots in real time. 
Due to the remarkable development of mobile devices in recent years, STRATUM has accumulated about 500 FHD images of 240FPS (*1) high-speed camera equipped with iOS, and composites and takes 500 photos at a time at a high frame rate of 60FPS. 


-Spec-
In Stratum, each device limits the composition rate and the size of the composite image in order to perform the most reasonable processing possible for each device. The composite rate is different from the shooting rate. Any model capable of high-speed shooting can shoot at 240 FPS. (*2)
Synthesis rate of 30 FPS, 540p on iPhone 7
30FPS, 720p on iPhone XS
60FPS, 1080p on iPhone 11 or greater

It is controlled by the GPU family.
Record FHD 1080p, 60FPS with A13 or greater
HD, 30FPS recording with A11, A12
540p, 30FPS recording with A10

## Key features

- Eight slit scan types with reverse scan
- Adjustable slice size up to 500
- Manual focus lock and exposure adjustment
- Switch between front and rear cameras
- External display output support
- Preview photos and videos within the app

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/stratum-slit-scan/id1525313915/reviews.md

### 5/5 — Excellent slit scan

*2023-12-17*

I’ve been using this app for years and it’s great! No other app comes close not even on the computer. Very clever and intuitive interface uses the high frame rate camera to produce very smooth video.

### 5/5 — Well made slit scan!

*2023-01-22, version 1.0*

I have been using this app for a couple of years and there is nothing like it. It’s an excellent slit scan style camera with full adjustments. Really well done!

### 5/5 — Good video quality

*2022-11-08*

Definitely worth the price!

### 1/5 — Crashes a lot

*2022-11-05*

Like it says - this app crashes a lot. Makes it hard to use. Come back later when bugs have been fixed!

### 5/5 — The best of its kind on iOS

*2021-02-08*

There is a lot of control, and works perfectly on iPhone 12 Max. 
Worth the money.

## Frequently asked questions about STRATUM Slit Scan

### What is STRATUM Slit Scan?

STRATUM Slit Scan is a photo and video app that creates unique time-displacement effects by digitally slicing and compositing captured frames in real-time, mimicking the analog slit scan technique.

### How does STRATUM Slit Scan create its effects?

Instead of a physical slit, the app digitally captures data, slices it in any direction, and combines frames for each shot in real-time. This allows for advanced control over the time-displacement effect.

### What are the performance capabilities of STRATUM Slit Scan?

Models with high-speed cameras can shoot at up to 240 FPS. The synthesis rate varies by device, with newer iPhones (11 or greater) achieving 60FPS at 1080p, while older models like the iPhone 7 can achieve 30FPS at 540p.

### Can I adjust the look of the slit scans in STRATUM Slit Scan?

Yes, you can adjust the slice size up to around 500 strips, and the app offers manual focus lock and exposure adjustment for greater creative control.

### Does STRATUM Slit Scan have ads?

No, STRATUM Slit Scan does not contain advertisements. It is a paid application.

### What devices is STRATUM Slit Scan compatible with?

STRATUM Slit Scan is compatible with iPhone, iPad, and iPod touch devices. It requires iOS and its performance is optimized based on the device's GPU family.

### How often is STRATUM Slit Scan updated?

STRATUM Slit Scan was last updated on November 19, 2020, with version 1.0. The release date was also November 19, 2020.

### What is the price of STRATUM Slit Scan?

STRATUM Slit Scan is a paid app priced at $1.99. There are no in-app purchases or subscriptions available.

## Version history (last 1 release)

### 1.0 — 2020-11-19

No release notes.

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## More apps by Narumi Inada

- [Pramile](https://appshunter.io/ios/app/pramile/id1347729164)
- [Chladni Screen](https://appshunter.io/ios/app/chladni-screen/id1385177377)
- [100VJ](https://appshunter.io/ios/app/100vj/id1389748239)
- [Audio Analyzer](https://appshunter.io/ios/app/audio-analyzer/id1482367696)
- [POLYCAM](https://appshunter.io/ios/app/polycam/id1485113666)

All apps by Narumi Inada: https://appshunter.io/developer/1347729163

## Related topics

[stratum slit scan](https://appshunter.io/ios/topics/stratum-slit-scan) · [slit scan camera](https://appshunter.io/ios/topics/slit-scan-camera) · [slit scan](https://appshunter.io/ios/topics/slit-scan)

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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 2026-08-20.*