# Doublio vs Grid

The clearest difference is in-app purchases: Grid at none against Doublio's 1. Grid also leads on ads (none vs shown). Doublio's advantage is update cadence (weekly vs every 3 weeks) and iOS requirement (15.0 vs 17.0). On price and device support there is nothing between them.

Both are free to download. Doublio sells 1 one-off in-app purchase. Grid asks for nothing beyond the download.

Doublio ships an update weekly, Grid every 3 weeks. The most recent releases landed on October 28, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Doublio | Grid |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 35 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jakub Schmidt](https://appshunter.io/developer/1895911394) | [Uma Geleen](https://appshunter.io/developer/6808955642) |

## What reviewers say

### Doublio

[App page](https://appshunter.io/ios/app/doublio-number-puzzle/id6764775662)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cascade Two: Ad Free | $1.99 | one-time |


### Grid

[App page](https://appshunter.io/ios/app/grid-lock/id6809884483)

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

**In-app purchases:** none


## Frequently asked questions

### Is Doublio free?

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

### Is Grid free?

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

### Do Doublio or Grid have ads?

Doublio shows ads; Grid does not.

### Which is updated more often, Doublio or Grid?

Doublio ships an update weekly, and Grid every 3 weeks. Most recently, Doublio was updated on October 28, 2026 and Grid on October 26, 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.*