STRATUM Slit Scan vs AR Mask
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STRATUM Slit Scan
Create unique slit scan photos and videos using your device's camera. Adjust slice size, focus, and exposure for artistic effects. Supports external display output for live performances.
- 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
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-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
AR Mask
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■ Image recognition automatically makes the background of the image cut out as a mask transparent. ■ Whether it's a celebrity or a character, you can easily cut it out from a web image displayed on the app screen and register it as a mask. ● Swap a face with another face! ● Introducing a “dream app” that allows you to register any kind of mask and combine it with the recognized face! ! ● Disney, Studio Ghibli, Star Wars, and all kinds of images are OK. ● Expand your ideas, create a masked photo that will surprise everyone, and share it on SNS. ● This is a unique app that is full of fun and freedom. ● It is also practical, such as for trying on glasses and sunglasses, and for hiding your face. ■ You can capture and synthesize any image you search on the web on the app. ■ The registered "mask" is synthesized in real time with face-recognised photos and camera images. ■ Mask composition can be performed in real time while looking at the AR camera. ■ We can handle even image with copyright and portrait right including comics and animation, Disney, movie, TV without limit. ■ Festival masks, glasses, Halloween masks, hats, characters, animals, celebrities, sunglasses, etc. can be synthesized. ■ Fruits, vegetables, home appliances, PCs, smartphones, cars, families, stuffed animals, etc., anything can be synthesized depending on your ideas. ■ The background of the mask is automatically transparent. You can also make only part of the mask (such as the part corresponding to the eyes and mouth) translucent. ■ Even if the direction of the face is changed, the mask is automatically deformed and synthesized in real time to match it. ■ Camera shooting and photo library photos are also supported. ■ If multiple faces are recognized, multiple masks can be selected and assigned freely with one touch. [Example of use] - Wear a mask of your favorite character from anime, movies, comics, etc. - For Halloween, put on a mask and makeup suitable for pumpkins and Halloween - Cut out the faces of popular celebrities and movie stars and replace them with your own - Simulation to see if glasses, sunglasses, and hats look good on you - Try on party goods and get excited - Check if beards and moles look good on you - Wear the face of various animals such as dogs and cats - Immerse yourself in the masquerade mood with a Venetian mask - Wear a mask sold at night stalls at festivals - Cut holes for eyes and mouth in fruits and vegetables , etc. [Input] - Real-time AR camera - Photo library photos - Photos taken with the camera activated - Search image in web browser - Paste the copied image - File-shared images [Output] - Save to Photo Library - Photo sharing: AirDrop, LINE, Facebook, Dropbox, Instagram,... [Important] When using images with copyrights or portrait rights, please use them only for personal use.
Screenshots
Verdict
STRATUM Slit Scan and AR Mask are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
STRATUM Slit Scan costs $1.99 and AR Mask $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | STRATUM Slit Scan | AR Mask |
|---|---|---|
| Price | $1.99 | $1.99 |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | — | Every 4 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | Narumi Inada | Masanori Katsuta |
In-app purchases
STRATUM Slit Scan
No in-app purchases
AR Mask
No in-app purchases









