# TurnTap vs Chess Clock Duo

The clearest difference is in-app purchases: TurnTap at none against Chess Clock Duo's 3. TurnTap also leads on iOS requirement (18.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Chess Clock Duo sells 3 in-app purchases, starting at $0.99 per month. TurnTap asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | TurnTap | Chess Clock Duo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Size | 1 MB | 11 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joar Gullestad Pettersen](https://appshunter.io/developer/991328913) | [Vincent Grellert](https://appshunter.io/developer/1886984960) |

## What reviewers say

### TurnTap

[App page](https://appshunter.io/ios/app/turntap/id6761765309)

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

**In-app purchases:** none


### Chess Clock Duo

[App page](https://appshunter.io/ios/app/chess-clock-duo-blitz-timer/id6792531599)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $0.99 | per month |
| Pro Yearly | $8.99 | per year |
| Chess Clock Pro | $24.99 | one-time |


## Frequently asked questions

### Is TurnTap free?

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

### Is Chess Clock Duo free?

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

### Do TurnTap or Chess Clock Duo have ads?

Neither TurnTap nor Chess Clock Duo shows ads.

### Which is updated more often, TurnTap or Chess Clock Duo?

TurnTap ships an update every 3 months, and Chess Clock Duo every 3 months. Most recently, TurnTap was updated on November 5, 2026 and Chess Clock Duo on November 10, 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.*