# Nemesis vs Stamp Identifier

The clearest difference is in-app purchases: Nemesis at none against Stamp Identifier's 2. Nemesis also leads on iOS requirement (13.0 vs 16.6). Stamp Identifier's advantage is update cadence (weekly vs every 17 months) and device support. On price there is nothing between them.

Both are free to download. Stamp Identifier sells 2 in-app purchases, starting at $2.99 per 7 days. Nemesis asks for nothing beyond the download.

Nemesis ships an update every 17 months, Stamp Identifier weekly. Both last shipped on October 30, 2026.

## The numbers

| Metric | Nemesis | Stamp Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (6 ratings)](https://appshunter.io/ios/app/stamp-identifier-stamplet/id6756788107/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | Every 17 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 14 MB | 51 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | — | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [春荣 陈](https://appshunter.io/developer/1729071810) | [VIKSVA, MB](https://appshunter.io/developer/1821126705) |

## What reviewers say

### Nemesis

[App page](https://appshunter.io/ios/app/nemesis/id6479341870)

**In-app purchases:** none


### Stamp Identifier

[App page](https://appshunter.io/ios/app/stamp-identifier-stamplet/id6756788107)

Instantly identify and value postage stamps with advanced AI. Get accurate appraisals, condition assessments, and detect rare errors from a single photo. Manage your collection and track its value over time.

**Highlights:** AI-powered stamp identification, Instant valuation and price guide, Professional condition assessment and grading, Detection of rare errors and varieties, Two-sided comprehensive analysis, Stamp collection management and portfolio tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium weekly | $2.99 | per 7 days |
| Yearly subscription | $34.99 | per year |


## Frequently asked questions

### Is Nemesis free?

Nemesis 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 is updated more often, Nemesis or Stamp Identifier?

Nemesis ships an update every 17 months, and Stamp Identifier weekly. Most recently, Nemesis was updated on October 30, 2026 and Stamp Identifier on October 30, 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.*