# CoSudoku vs GRIDLOCK

The clearest difference is in-app purchases: CoSudoku at none against GRIDLOCK's 5. CoSudoku also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. GRIDLOCK sells 5 in-app purchases, starting at $2.99 per month. CoSudoku asks for nothing beyond the download.

CoSudoku ships an update every 6 days, GRIDLOCK every 4 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | CoSudoku | GRIDLOCK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 days | **Every 4 days** |
| Size | 45 MB | 167 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ayova Technologies](https://appshunter.io/developer/1805380017) | [Ayush Chaurasia](https://appshunter.io/developer/1119536352) |

## What reviewers say

### CoSudoku

[App page](https://appshunter.io/ios/app/cosudoku/id6757550642)

**Features:** macOS Compatibility

**In-app purchases:** none


### GRIDLOCK

[App page](https://appshunter.io/ios/app/gridlock-ultimate-tic-tac-toe/id6808733376)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GRIDLOCK Plus | $2.99 | per month |
| Starter Pack 100 Credits | $0.99 | one-time |
| Boost Pack 250 Credits | $1.99 | one-time |
| Power Pack 400 Credits | $2.99 | one-time |
| Ultimate Pack 600 Credits | $3.99 | one-time |


## Frequently asked questions

### Is CoSudoku free?

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

### Is GRIDLOCK free?

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

### Do CoSudoku or GRIDLOCK have ads?

GRIDLOCK shows ads; CoSudoku does not.

### Which is updated more often, CoSudoku or GRIDLOCK?

CoSudoku ships an update every 6 days, and GRIDLOCK every 4 days. Most recently, CoSudoku was updated on November 5, 2026 and GRIDLOCK on November 6, 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.*