Sigma Counter vs Zero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sigma Counter
Easily count objects in your photos by tapping them. Save and share your counted images via email or social networks. Utilize specialized tools for marking sequential or grid-like object arrangements.
- Tap to count objects
- Use photos from library or new photos
- Save and share counted images
- Line tool for sequential objects
- Multiplication tool for grid layouts
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Take a new photo or pick a photo from your photo library and then count objects on it by tapping them. Save screenshots and/or share them via email or social networks. Use the Line tool when you need to mark a sequence of objects with equal distances between them (note: this doesn't work well with object viewed in perspective). Use the Multiplication tool to count objects positioned in 'rows' and 'columns'.
Zero
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A zero-shot object counting app is an app that counts objects without the need to specify what to count. Just present an image, and the app automatically identifies visually similar objects in the image and counts them. This is enabled by an innovative architecture consisting of a ViT-based encoder and a convolutional decoder, capable of extracting features from image and turning it into a "heat map" where each object is represented by a dot. Conventional methods are then used to count the dots in the "heat map". Note that this app only provide a rough estimation of the object count. Estimations may be inaccurate or incorrect. Do not rely on the results.
Screenshots
Verdict
The clearest difference is device support: Sigma Counter at 3 against Zero's 1. Sigma Counter also leads on iOS requirement (9.0 vs 16.0). On price, ads 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.
| Parameter | Sigma Counter | Zero |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 52 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 11 MB | 98 MB |
| Age rating | 4+ | 4+ |
| Developer | Karen Grigorian | 行健 赵 |
In-app purchases
Sigma Counter
No in-app purchases
Zero
No in-app purchases
