# Keyb vs OS One

The clearest difference is price: OS One at Free against Keyb's $3.99. Keyb's advantage is iOS requirement (18.0 vs 26.0). On rating, ratings volume, update cadence and ads there is nothing between them.

OS One is free to download; Keyb costs $3.99 up front. Keyb sells 3 in-app purchases, starting at $3.99 per month and OS One sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Keyb against 5.0 for OS One. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Keyb ships an update weekly, OS One every 4 days. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Keyb | OS One |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/keyb/id1600111277/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/os-one/id6760207862/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 4 days** |
| Monetization | Freemium | Freemium |
| Size | 7 MB | 65 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [Christian Lobach](https://appshunter.io/developer/516573165) | [Human Interface Design LLC](https://appshunter.io/developer/1078749730) |

## What reviewers say

### Keyb

[App page](https://appshunter.io/ios/app/keyb/id1600111277)

Boost your typing efficiency with a custom keyboard that allows you to save and reuse text snippets. Enhance your messages with dynamic placeholders for clipboard content, dates, and location. Seamlessly integrate across all your apps for consistent productivity.

**Highlights:** Reusable text snippets, Dynamic snippets with placeholders, Clipboard integration (Pro), Text transformation, Cross-app compatibility, Unlimited categories/snippets (Pro)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keyb Pro Monthly | $3.99 | per month |
| Keyb Pro Yearly | $24.99 | per year |
| Keyb Pro Lifetime | $59.99 | one-time |


### OS One

[App page](https://appshunter.io/ios/app/os-one/id6760207862)

This personal agent assists with chat, content creation, and app integration. It can generate images and videos, search the web, and manage tasks through a conversational interface. Advanced features require a subscription after initial free examples.

**Highlights:** AI chat and reasoning, Image and video generation, Web and X search, App integrations, Voice and podcast modes, Live Activities tracking

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic | $4.99 | per month |
| Pro | $19.99 | per month |
| Max | $99.99 | per month |


## Frequently asked questions

### Is Keyb free?

Keyb costs $3.99, and also offers in-app purchases.

### Is OS One free?

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

### Which has better reviews, Keyb or OS One?

Keyb and OS One are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Keyb or OS One have ads?

Neither Keyb nor OS One shows ads.

### Which is updated more often, Keyb or OS One?

Keyb ships an update weekly, and OS One every 4 days. Most recently, Keyb was updated on October 7, 2026 and OS One on September 30, 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.*