# AStamp vs KNOW TV

The clearest difference is ads: AStamp at none against KNOW TV's shown. AStamp also leads on update cadence (every 2 months vs every 12 months) and monetization model (free vs ad-supported). KNOW TV's advantage is device support (4 vs 2) and iOS requirement (12.0 vs 18.6). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for AStamp against 5.0 for KNOW TV. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

AStamp ships an update every 2 months, KNOW TV every 12 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | AStamp | KNOW TV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/astamp/id400883592/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/know-tv/id1664296636/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | **Free** | Ad-supported |
| Size | 413 MB | 20 MB |
| Requires iOS | 18.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 4+ | 9+ |
| Developer | [蒨 周](https://appshunter.io/developer/400883595) | [MacMillan Interactive Communications, LLC](https://appshunter.io/developer/820481297) |

## What reviewers say

### AStamp

[App page](https://appshunter.io/ios/app/astamp/id400883592)

This app provides a comprehensive catalog of Chinese mainland stamps issued after 1949, including commemorative, special, and miniature sheets. It displays stamp information, images, and synchronized market prices for reference. Users can access some images directly and download others from the internet.

**Highlights:** Catalog of Chinese mainland stamps, Stamp information and images, Synchronized market prices, Reference for buying and selling, Downloadable stamp images

**Features:** macOS Compatibility

**In-app purchases:** none


### KNOW TV

[App page](https://appshunter.io/ios/app/know-tv/id1664296636)

Access a diverse range of shows covering current events, entertainment, documentaries, learning, and news. Explore topics from local to global scales, offering a comprehensive viewing experience.

**Highlights:** Variety of shows, Current events coverage, Documentary content, Learning programs, News updates, Global and local topics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AStamp free?

AStamp is free to download, with no in-app purchases.

### Is KNOW TV free?

KNOW TV is free to download, with no in-app purchases.

### Which has better reviews, AStamp or KNOW TV?

AStamp and KNOW TV are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do AStamp or KNOW TV have ads?

KNOW TV shows ads; AStamp does not.

### Which is updated more often, AStamp or KNOW TV?

AStamp ships an update every 2 months, and KNOW TV every 12 months. Most recently, AStamp was updated on November 6, 2026 and KNOW TV on November 3, 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.*