# Sigma Counter vs LeafDetect

The clearest difference is in-app purchases: Sigma Counter at none against LeafDetect's 3. Sigma Counter also leads on iOS requirement (9.0 vs 15.6). LeafDetect's advantage is update cadence (fortnightly vs every 52 months). On price, ads and device support there is nothing between them.

Both are free to download. LeafDetect sells 3 in-app purchases, starting at $3.99 per 7 days. Sigma Counter asks for nothing beyond the download.

Sigma Counter ships an update every 52 months, LeafDetect fortnightly. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Sigma Counter | LeafDetect |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 52 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 11 MB | 48 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Karen Grigorian](https://appshunter.io/developer/948320401) | [Pham Dinh Sy](https://appshunter.io/developer/1023242271) |

## 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


### LeafDetect

[App page](https://appshunter.io/ios/app/leafdetect-plant-identifier/id6772935466)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $3.99 | per 7 days |
| Yearly Subscription Sale | $29.99 | per year |
| Yearly Subscription | $39.99 | per year |


## Frequently asked questions

### Is Sigma Counter free?

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

### Is LeafDetect free?

LeafDetect is free to download, with in-app purchases available.

### Do Sigma Counter or LeafDetect have ads?

Neither Sigma Counter nor LeafDetect shows ads.

### Which is updated more often, Sigma Counter or LeafDetect?

Sigma Counter ships an update every 52 months, and LeafDetect fortnightly. Most recently, Sigma Counter was updated on October 7, 2026 and LeafDetect on October 16, 2026.

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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.*