# Stamp Identifier & Snap ID vs Postcard Archive

The clearest difference is rating: Postcard Archive at 5.0 against Stamp Identifier & Snap ID's 4.6. Postcard Archive also leads on monetization model (free vs freemium) and update cadence (every 5 days vs every 4 weeks). Stamp Identifier & Snap ID's advantage is ratings volume (22 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Stamp Identifier & Snap ID sells 3 in-app purchases, starting at $3.99 per 7 days and Postcard Archive sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Postcard Archive holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Stamp Identifier & Snap ID has 22 ratings behind it against 1, so its average is the more settled of the two.

Stamp Identifier & Snap ID ships an update every 4 weeks, Postcard Archive every 5 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Stamp Identifier & Snap ID | Postcard Archive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (22 ratings)](https://appshunter.io/ios/app/stamp-identifier-and-snap-id/id6748874406/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/postcard-archive/id6768242841/reviews)** |
| Number of ratings | **22** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 5 days** |
| Monetization | Freemium | **Free** |
| Size | 17 MB | 87 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [升 徐](https://appshunter.io/developer/1693016656) | [Rizk Corsight, LLC](https://appshunter.io/developer/1896065289) |

## What reviewers say

### Stamp Identifier & Snap ID

[App page](https://appshunter.io/ios/app/stamp-identifier-and-snap-id/id6748874406)

Instantly identify stamps using AI, verify authenticity, and discover their historical significance and market value. Organize your collection and chat with an AI expert about stamp details.

**Highlights:** AI stamp identification, Authenticity verification, Historical significance discovery, Market value estimation, Stamp collection organization, AI chat for stamp details

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Annual | $24.99 | per year |
| Lifetime | $29.99 | one-time |


### Postcard Archive

[App page](https://appshunter.io/ios/app/postcard-archive/id6768242841)

A private, offline digital catalog for postcard collectors. It allows you to photograph both sides of your cards, automatically extract information from handwritten messages using on-device OCR, and classify the card's era. Organize your entire collection with detailed fields and explore it through various browsing and search options.

**Highlights:** Two-sided card capture, On-device OCR for handwritten messages, Automatic era classification, Detailed collection record fields, Relationship Timeline, Offline, private storage, CSV/JSON archive export

**Features:** Family Sharing, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3-Day Trial | Free | one-time |
| Postcard Archive Pro | $1.99 | one-time |
| Postcard Archive Full Access | $1.99 | one-time |


## Frequently asked questions

### Is Stamp Identifier & Snap ID free?

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

### Is Postcard Archive free?

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

### Which has better reviews, Stamp Identifier & Snap ID or Postcard Archive?

Postcard Archive is rated higher. Stamp Identifier & Snap ID averages 4.6 out of 5 from 22 ratings, while Postcard Archive averages 5.0 from 1 ratings.

### Do Stamp Identifier & Snap ID or Postcard Archive have ads?

Neither Stamp Identifier & Snap ID nor Postcard Archive shows ads.

### Which is updated more often, Stamp Identifier & Snap ID or Postcard Archive?

Stamp Identifier & Snap ID ships an update every 4 weeks, and Postcard Archive every 5 days. Most recently, Stamp Identifier & Snap ID was updated on October 28, 2026 and Postcard Archive on October 31, 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.*