# CardWord vs O Words

The clearest difference is in-app purchases: CardWord at none against O Words's 2. CardWord also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). O Words's advantage is update cadence (every 2 weeks vs every 8 months). On price and device support there is nothing between them.

Both are free to download. O Words sells 2 in-app purchases, starting at $0.99 per month. CardWord asks for nothing beyond the download.

CardWord ships an update every 8 months, O Words every 2 weeks. The most recent releases landed on October 30, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | CardWord | O Words |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 2 weeks** |
| Size | 30 MB | 58 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Andrey Gorokhov](https://appshunter.io/developer/1710776054) | [Alp Can Marangoz](https://appshunter.io/developer/1655568075) |

## What reviewers say

### CardWord

[App page](https://appshunter.io/ios/app/cardword/id6474603128)

**Features:** macOS Compatibility

**In-app purchases:** none


### O Words

[App page](https://appshunter.io/ios/app/o-words/id6477305214)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month of Premium. | $0.99 | per month |
| 1 Year of Premium. | $5.99 | per year |


## Frequently asked questions

### Is CardWord free?

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

### Is O Words free?

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

### Do CardWord or O Words have ads?

O Words shows ads; CardWord does not.

### Which is updated more often, CardWord or O Words?

CardWord ships an update every 8 months, and O Words every 2 weeks. Most recently, CardWord was updated on October 30, 2026 and O Words on October 9, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*