# Grandmaster Chess Clock vs Blocktower BotC Toolkit

The clearest difference is in-app purchases: Blocktower BotC Toolkit at none against Grandmaster Chess Clock's 3. Blocktower BotC Toolkit also leads on ads (none vs shown). Grandmaster Chess Clock's advantage is update cadence (every 2 days vs every 3 weeks) and iOS requirement (15.1 vs 18.0). On price and device support there is nothing between them.

Both are free to download. Grandmaster Chess Clock sells 3 in-app purchases, starting at $4.99 per month. Blocktower BotC Toolkit asks for nothing beyond the download.

Grandmaster Chess Clock ships an update every 2 days, Blocktower BotC Toolkit every 3 weeks. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Grandmaster Chess Clock | Blocktower BotC Toolkit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/grandmaster-chess-clock/id6746950623/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Ad-supported | — |
| Size | 54 MB | 14 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aras Atakligan](https://appshunter.io/developer/1819101189) | [Tim Sullivan](https://appshunter.io/developer/1806881600) |

## What reviewers say

### Grandmaster Chess Clock

[App page](https://appshunter.io/ios/app/grandmaster-chess-clock/id6746950623)

This app provides precise timing for chess games, supporting various time controls and offering detailed game history tracking. It allows users to record, share, and analyze their games, making it ideal for tournament players and enthusiasts looking to improve their time management.

**Highlights:** Versatile time controls (Rapid, Blitz, Bullet), Customizable time settings with increment/delay, Automatic game recording and detailed statistics, Share and export game records and history, Tournament-ready precision timing, Elegant dark theme and intuitive interface, Multi-language support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Clock Pro Monthly | $4.99 | per month |
| Clock Pro Annual | $24.99 | per year |
| Clock Pro Lifetime | $44.99 | one-time |


### Blocktower BotC Toolkit

[App page](https://appshunter.io/ios/app/blocktower-botc-toolkit/id6758778915)

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

**In-app purchases:** none


## Frequently asked questions

### Is Grandmaster Chess Clock free?

Grandmaster Chess Clock is free to download, with in-app purchases available.

### Is Blocktower BotC Toolkit free?

Blocktower BotC Toolkit is free to download, with no in-app purchases.

### Do Grandmaster Chess Clock or Blocktower BotC Toolkit have ads?

Grandmaster Chess Clock shows ads; Blocktower BotC Toolkit does not.

### Which is updated more often, Grandmaster Chess Clock or Blocktower BotC Toolkit?

Grandmaster Chess Clock ships an update every 2 days, and Blocktower BotC Toolkit every 3 weeks. Most recently, Grandmaster Chess Clock was updated on October 24, 2026 and Blocktower BotC Toolkit on October 18, 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.*