# Sigma Counter vs Zero

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.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Sigma Counter | Zero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/sigma-counter/id1180349975/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 52 months | — |
| Monetization | Free | — |
| Size | 11 MB | 98 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Karen Grigorian](https://appshunter.io/developer/948320401) | [行健 赵](https://appshunter.io/developer/1727987356) |

## What reviewers say

### Sigma Counter

[App page](https://appshunter.io/ios/app/sigma-counter/id1180349975)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Zero

[App page](https://appshunter.io/ios/app/zero-shot-counting/id6478505632)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sigma Counter free?

Sigma Counter is free to download, with no in-app purchases.

### Is Zero free?

Zero is free to download, with no in-app purchases.

### Do Sigma Counter or Zero have ads?

Neither Sigma Counter nor Zero shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*