Comparison

Keyb vs OS One

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Keyb

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)
Read full description

Keyb is your productivity keyboard! ### Save time with reusable snippets ### Save time by using predefined text snippets for common phrases you frequently type, such as email replies, greetings, code templates, or personal information. Organize these snippets into categories for easy access. ### Dynamic snippets with placeholders ### Enhance your snippets with placeholders that automatically insert: - Text from the clipboard - Text selected in a text field - Current date and time - Current location (as coordinates, address, or URL) - Transform text in a text field (uppercase, lowercase, capitalize) - … and more! ### Seamless integration across all apps ### Switch to the Keyb keyboard and paste your snippets into any text field in any app, boosting productivity across all your iOS applications. ### Permissions Required for Extended Features ### Some features require enabling "Full Access" for the keyboard extension in system settings.

About

OS One

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
Read full description

Meet OS1, your personal agent for chat, creation, search, and the apps you already use. Generate or animate images. Search for anything. Ask questions, turn ideas into video, build playlists, check places, and handle the hard parts from one chat. Free Try It examples: OS1 includes two free Try It example messages during onboarding so new users can try image, video, or chat before choosing a plan. Paid features: after the free Try It examples, continued access to chat models, image generation, image editing, video generation, app integrations, voice mode, podcast mode, web and X search, Live Activities, memory, and higher usage requires a separate auto-renewable OS1 subscription. Plan pricing, free trial availability, renewal terms, and credit amounts are shown before purchase in the app. What you can do with OS1: - Chat with AI instant and reasoning models - Podcast mode generates audio from PDFs and messages - Voice mode lets you chat with OS1 in realtime - Generate and animate images - Generate videos from prompts or image - Edit and remix images with natural language - Search the web and X when you choose - Create Music playlists and use app integrations - Track longer generations with Live Activities - Search chat history and pin chats - Use optional memory when you turn it on OS1 is built to feel simple, focused, and powerful: ask, create, refine, share. Privacy Policy: https://os1.computer/privacy Terms of Service: https://os1.computer/terms EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Keyb4 screens
OS One4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard2 real differences · 8 level
Keyb versus OS One: the parameters behind the verdict, then further details
ParameterKeybOS One
Price$3.99Free — better
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews50.0% of reviews—
Number of ratings11
Update frequencyWeeklyEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS18.0 — better26.0
Further details — not scored
Size7 MB65 MB
Age rating4+17+
DeveloperChristian LobachHuman Interface Design LLC

Customer experience

Keyb

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

OS One

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Keyb

Subscriptions2
  • Keyb Pro Monthly$3.991 Month
  • Keyb Pro Yearly3 Days trial$24.991 Year
One-time1
  • Keyb Pro Lifetime$59.99
3 purchases

OS One

Subscriptions3
  • Basic3 Days trial$4.991 Month
  • Pro$19.991 Month
  • Max$99.991 Month

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.

Other comparisons