# Thinking AI Chat vs Stamp Identifier

The clearest difference is in-app purchases: Thinking AI Chat at none against Stamp Identifier's 2. Thinking AI Chat also leads on iOS requirement (12.4 vs 15.1). 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 $5.99 per 7 days. Thinking AI Chat asks for nothing beyond the download.

## The numbers

| Metric | Thinking AI Chat | Stamp Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (8 ratings)](https://appshunter.io/ios/app/stamp-identifier-ai-scan/id6755162905/reviews)** |
| Number of ratings | — | **8** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Freemium |
| Size | 15 MB | 42 MB |
| Requires iOS | **12.4** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Thinking Technology Limited](https://appshunter.io/developer/1531650633) | [RetainAI Limited](https://appshunter.io/developer/1836623775) |

## What reviewers say

### Thinking AI Chat

[App page](https://appshunter.io/ios/app/thinking-ai-chat/id6461346985)

**In-app purchases:** none


### Stamp Identifier

[App page](https://appshunter.io/ios/app/stamp-identifier-ai-scan/id6755162905)

Instantly identify stamps with AI by taking a photo. Discover their history, estimated value, and preservation tips. Chat with the AI for tailored guidance on your collection.

**Highlights:** AI-powered stamp identification, Stamp history and significance, Estimated market value, Preservation and care tips, AI chat for guidance

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stamp Identifier Weekly | $5.99 | per 7 days |
| Stamp Identifier Annual | $29.99 | per year |


## Frequently asked questions

### Is Thinking AI Chat free?

Thinking AI Chat is free to download, with no in-app purchases.

### Is Stamp Identifier free?

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

### Do Thinking AI Chat or Stamp Identifier have ads?

Neither Thinking AI Chat nor Stamp Identifier shows ads.

---

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