# Cognition vs Stamp Identifier

The clearest difference is rating: Cognition at 5.0 against Stamp Identifier's 3.7. Cognition also leads on in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 3 months). Stamp Identifier's advantage is ratings volume (3 vs 1). On price, ads and device support there is nothing between them.

Both are free to download. Stamp Identifier sells 2 in-app purchases, starting at $4.99 per 7 days. Cognition asks for nothing beyond the download.

Cognition holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

Cognition ships an update every 3 weeks, Stamp Identifier every 3 months. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Cognition | Stamp Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cognition/id1123981796/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/stamp-identifier-ai-scanner/id6737816855/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 91 MB | 32 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Insight Online](https://appshunter.io/developer/1525363373) | [Semen Sharyhin](https://appshunter.io/developer/1463206827) |

## What reviewers say

### Cognition

[App page](https://appshunter.io/ios/app/cognition/id1123981796)

Connects students with qualified tutors based on location. The platform facilitates lesson requests, tutor applications, and secure in-app payments, streamlining the tutoring process for both parties.

**Highlights:** Location-based tutor matching, Lesson request system, Tutor application process, Student-based tutor selection, Secure in-app payments, Tutor and student profiles

**Features:** macOS Compatibility

**In-app purchases:** none


### Stamp Identifier

[App page](https://appshunter.io/ios/app/stamp-identifier-ai-scanner/id6737816855)

Instantly identify fish species with AI. Upload a photo or take a new one to get accurate results and detailed information. Perfect for anglers, researchers, and nature enthusiasts.

**Highlights:** AI-powered identification, Photo upload for analysis, Detailed species information, Vast fish database, Ideal for anglers and researchers

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stamp Identifier Premium Week | $4.99 | per 7 days |
| Stamp Identifier Premium Year | $24.99 | per year |


## Frequently asked questions

### Is Cognition free?

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

### Is Stamp Identifier free?

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

### Which has better reviews, Cognition or Stamp Identifier?

Cognition is rated higher. Cognition averages 5.0 out of 5 from 1 ratings, while Stamp Identifier averages 3.7 from 3 ratings.

### Do Cognition or Stamp Identifier have ads?

Neither Cognition nor Stamp Identifier shows ads.

### Which is updated more often, Cognition or Stamp Identifier?

Cognition ships an update every 3 weeks, and Stamp Identifier every 3 months. Most recently, Cognition was updated on October 20, 2026 and Stamp Identifier on October 24, 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.*