# TOPigeon Clock vs CHCK.AI

The clearest difference is review sentiment: CHCK.AI at 55% against TOPigeon Clock's 0%. TOPigeon Clock's advantage is ads (none vs shown) and update cadence (fortnightly vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

TOPigeon Clock ships an update fortnightly, CHCK.AI every 5 weeks. The most recent releases landed on October 18, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | TOPigeon Clock | CHCK.AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.4 (33 ratings)](https://appshunter.io/ios/app/chckai-card-grading/id1580090666/reviews)** |
| Number of ratings | — | **33** |
| Positive reviews | 0.0% of reviews | **54.5% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | **Free** | Ad-supported |
| Size | 12 MB | 64 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Avance Technology Co., Ltd.](https://appshunter.io/developer/1435752947) | [Shoebox Inc.](https://appshunter.io/developer/1745157528) |

## What reviewers say

### TOPigeon Clock

[App page](https://appshunter.io/ios/app/topigeon-clock/id1476354313)

This app synchronizes important data with your pigeon clock, including arrival information and clock status. Pigeon fanciers can easily manage their pigeon racing world from their mobile device.

**Highlights:** Synchronize pigeon clock data, View arrival information, Monitor clock status, Manage pigeon racing world, Personal pigeon clock interface

**Features:** macOS Compatibility

**In-app purchases:** none


### CHCK.AI

[App page](https://appshunter.io/ios/app/chckai-card-grading/id1580090666)

Easily appraise sports trading cards using AI and expert insights. Scan your cards to get real-time market data, discover hidden gems, and receive pre-grade assessments before professional submission. Showcase your collection and curate custom sets.

**Highlights:** AI-powered card scanning, Real-time market pricing, Expert-verified pre-grading, Collection cataloging, Custom set curation, Shareable card/set links

**Features:** Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TOPigeon Clock free?

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

### Is CHCK.AI free?

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

### Do TOPigeon Clock or CHCK.AI have ads?

CHCK.AI shows ads; TOPigeon Clock does not.

### Which is updated more often, TOPigeon Clock or CHCK.AI?

TOPigeon Clock ships an update fortnightly, and CHCK.AI every 5 weeks. Most recently, TOPigeon Clock was updated on October 18, 2026 and CHCK.AI on October 27, 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.*