# Stamp Identifier vs RivalWord

The clearest difference is update cadence: RivalWord at every 10 days against Stamp Identifier's every 4 weeks. Stamp Identifier's advantage is iOS requirement (13.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Stamp Identifier sells 3 in-app purchases, starting at $8.99 per month and RivalWord sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Stamp Identifier ships an update every 4 weeks, RivalWord every 10 days. The most recent releases landed on October 27, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Stamp Identifier | RivalWord |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (377 ratings)](https://appshunter.io/ios/app/stamp-identifier/id1514872924/reviews)** | — |
| Number of ratings | **377** | — |
| Positive reviews | 44.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 105 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Amir Wald](https://appshunter.io/developer/1654387621) | [Radostin Atanasov](https://appshunter.io/developer/6815879334) |

## What reviewers say

### Stamp Identifier

[App page](https://appshunter.io/ios/app/stamp-identifier/id1514872924)

Identify stamps using advanced image recognition and AI. Get detailed information from a vast online catalog and organize your collection. Supports photos from your camera or gallery.

**Highlights:** AI Stamp Identification, Advanced image recognition, Stamp details from Colnect catalog, Save favorite stamps, Custom collections, Use camera or gallery

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $8.99 | per month |
| Premium | $73.99 | per year |
| Premium | $73.99 | per year |

**What reviewers like**

- 🚀 Excellent AI version
- 👍 Quick, easy to use
- 👍 Great for identification
- 👍 Fantastic App
- 👍 Works great!

**What reviewers complain about**

- 🐛 No values
- 🐛 The app it's self is ok
- 🐛 Too long
- 🐛 Updates are a fail
- 🐛 Scammerrrr

**Reported bugs**

- Camera cannot focus on stamps
- Fails to identify many common stamps
- Crashes after scanning a few stamps
- Incompatible with newer iPhone models

**Requested features**

- Add ability to search for stamps
- Add ability to add stamps to Colnect from app
- Add option to narrow search by country


### RivalWord

[App page](https://appshunter.io/ios/app/rivalword-learn-languages/id6815879332)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 300 Diamonds | $0.99 | one-time |
| Starter Pack | $0.99 | one-time |
| Royal Crown | $1.99 | one-time |
| Real World Pack | $1.99 | one-time |
| 700 Diamonds | $1.99 | one-time |
| Golden Eclipse | $2.99 | one-time |
| Elite Pack | $3.99 | one-time |
| 1600 Diamonds | $3.99 | one-time |
| 4500 Diamonds | $6.99 | one-time |
| 10000 Diamonds | $12.99 | one-time |


## Frequently asked questions

### Is Stamp Identifier free?

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

### Is RivalWord free?

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

### Do Stamp Identifier or RivalWord have ads?

Both Stamp Identifier and RivalWord show ads.

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

Stamp Identifier ships an update every 4 weeks, and RivalWord every 10 days. Most recently, Stamp Identifier was updated on October 27, 2026 and RivalWord on October 29, 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.*