# Serial Box vs Stamp Value

The clearest difference is update cadence: Stamp Value at weekly against Serial Box's monthly. Serial Box's advantage is iOS requirement (14.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Serial Box sells 1 one-off in-app purchase and Stamp Value sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Serial Box ships an update monthly, Stamp Value weekly. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Serial Box | Stamp Value |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.8 (6 ratings)](https://appshunter.io/ios/app/stamp-value-ai-identifier/id6756788107/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | — | Freemium |
| Size | 9 MB | 56 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mark Battistella](https://appshunter.io/developer/1584906978) | [VIKSVA, MB](https://appshunter.io/developer/1821126705) |

## What reviewers say

### Serial Box

[App page](https://appshunter.io/ios/app/serial-box/id1634535698)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock extras | $1.99 | one-time |


### Stamp Value

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

**In-app purchases (2)**

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


## Frequently asked questions

### Is Serial Box free?

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

### Is Stamp Value free?

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

### Do Serial Box or Stamp Value have ads?

Neither Serial Box nor Stamp Value shows ads.

### Which is updated more often, Serial Box or Stamp Value?

Serial Box ships an update monthly, and Stamp Value weekly. Most recently, Serial Box was updated on October 18, 2026 and Stamp Value 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.*