# One Big Thing vs Cria Planner

The clearest difference is in-app purchases: One Big Thing at none against Cria Planner's 4. One Big Thing also leads on ads (none vs shown). Cria Planner's advantage is update cadence (weekly vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Cria Planner sells 4 in-app purchases, starting at $2.99 per month. One Big Thing asks for nothing beyond the download.

One Big Thing ships an update every 2 months, Cria Planner weekly. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | One Big Thing | Cria Planner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Weekly** |
| Size | 1 MB | 74 MB |
| Requires iOS | 17.6 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Chatting](https://appshunter.io/developer/1811425476) | [Alpaca Media Limited](https://appshunter.io/developer/6802334002) |

## What reviewers say

### One Big Thing

[App page](https://appshunter.io/ios/app/one-big-thing/id6745229950)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cria Planner

[App page](https://appshunter.io/ios/app/cria-planner-plan-together/id6802333790)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Duo Monthly | $2.99 | per month |
| Family Monthly | $4.99 | per month |
| Duo Yearly | $24.99 | per year |
| Family Yearly | $49.99 | per year |


## Frequently asked questions

### Is One Big Thing free?

One Big Thing is free to download, with no in-app purchases.

### Is Cria Planner free?

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

### Do One Big Thing or Cria Planner have ads?

Cria Planner shows ads; One Big Thing does not.

### Which is updated more often, One Big Thing or Cria Planner?

One Big Thing ships an update every 2 months, and Cria Planner weekly. Most recently, One Big Thing was updated on October 10, 2026 and Cria Planner on October 24, 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.*