Rectangle Detection vs Banana Scale
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rectangle Detection
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Find rectangular regions in images. *Parameters that can be set for detection ・minimum Confidence: Confidence of detection results (0-1) ・minimum AspectRatio: Minimum aspect ratio of the rectangle to be detected (shorter dimension divided by longer dimension) (0-1) ・maximum AspectRatio: Maximum aspect ratio of the rectangle to be detected (shorter dimension divided by longer dimension) (0-1) ・quadratureTolerance: Tolerance angle for the corners of the rectangle to deviate from 90° (0-45) ・minimum Size: Ratio of size to the input image (0-1) ・maximum number of Rectangle : Maximum number of Rectangle(1-30)
Banana Scale
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Banana Scale is mainly designed to understand the scale of items based on a single photo. No online connectivity required, just a ArUco code in the image you took (available for free download). The size of the marker is predefined, so you have a precise measure of physical dimension per pixel at the location of the Marker. Utilizing basic photogrammetry, relying on the focal length of your image from the exif camera data being correct, we can place a 3D gizmo with X,Y and Z scaled arms into the image and do some volumetric measurements. Placing multiple ArUco codes in the same scene also allows measuring distance between the markers. Results can be stored or shared as images or forwarded to our Containd App for inventarizing the measured item. The app and the code downloads are free, work without online connection and don't require an account or login. It's a very limited niche case and requires printing a marker. But it gives you a robust way of adding scale to any photo you take without requiring an XR engine or video recording. [Features] • Add (measurement unit) per pixel scale to any single photo by placing a physical 3D marker in the scene. • Add x/y/z scale bars/ measurement bars. • Measure marker distance. • Estimate item dimensions and volume. • Processing 100% on device, no online connection required. • No in app purchase or other hidden costs • No tracking or advertising. Let me know if it is of any use for you!
Screenshots
Verdict
The clearest difference is ads: Banana Scale at none against Rectangle Detection's shown. Banana Scale also leads on update cadence (daily vs fortnightly) and device support (3 vs 1). On price and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Rectangle Detection ships an update fortnightly, Banana Scale daily. The most recent releases landed on July 22, 2026 and September 16, 2026 respectively.
| Parameter | Rectangle Detection | Banana Scale |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Daily — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.7.2 | 15.1 — better |
| Further details — not scored | ||
| Size | 36 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | Next Level Order Engineering UG (haftungsbeschrankt) |
In-app purchases
Rectangle Detection
No in-app purchases
Banana Scale
No in-app purchases
Questions
Is Rectangle Detection free?
Is Banana Scale free?
Do Rectangle Detection or Banana Scale have ads?
Which is updated more often, Rectangle Detection or Banana Scale?
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