Comparison

Iris vs OS3

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

Head to head
About

Iris

This app leverages voice commands to help you draft messages, take notes, engage in conversations, and ask questions. It aims to streamline daily tasks and information retrieval through intuitive voice interaction.

Highlights
  • Draft messages with voice
  • Take and recall voice notes
  • Engage in long conversations
  • Ask knowledge-based questions
  • Iterate and rewrite messages
  • Syncs across Apple devices
Features
Read full description

Iris is here to assist you with everyday tasks: • Have Long Conversations: Use Iris to brainstorm, chat through your day, or explore ideas in depth. Just say what's on your mind and let Iris help guide the conversation. • Take Notes: Tell Iris to save to memory anything you want it to remember later—just say, e.g. 'Iris, remember this,’ or ‘make a note of this’, followed by what you’d like Iris to remember. Need to recall it later? Simply ask, e.g. 'What do you remember about this?’, 'Can you remind me about...’, to retrieve it instantly. • Ask Knowledge-Based Questions: Literally, ask Iris anything! ----------- Privacy & Terms of Service: https://voice.computer/privacypolicy

About

OS3

Features
Read full description

OS3 is a voice assistant built for Apple Watch. Talk to it like you would a friend, no tapping, no typing, just your voice. How it works: 1. Raise your wrist and start talking. OS3 listens, thinks, and responds out loud entirely hands-free. 2. Conversations feel natural with real-time voice powered by Google's Gemini AI. 3. Live captions appear on screen as you speak and as OS3 responds. Features: 1. Voice first interaction designed for the small screen, concise answers, no clutter. 2. Conversation history: revisit past conversations and pick up where you left off. 3. A visual orb that animates as OS3 listens and speaks. 4. iOS companion app for managing your account, viewing usage, and subscription details. 5. Sign in with Apple for quick, private authentication. OS3 requires an active internet connection on Apple Watch. An iPhone with the companion app installed is needed for account setup. Terms of Use: https://os3.app/terms/

Screenshots

OS34 screens

Verdict

The call

The clearest difference is iOS requirement: OS3 at 18.0 against Iris's 26.0. On price, update cadence, ads and in-app purchases 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

Both are free to download. Iris sells 1 in-app purchase, starting at $4.99 per month and OS3 sells 1 in-app purchase, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Iris ships an update fortnightly, OS3 monthly. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

Scorecard1 real difference · 9 level
Iris versus OS3: the parameters behind the verdict, then further details
ParameterIrisOS3
PriceFreeFree
Rating3.7 (12 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings12 — better—
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, Apple WatchiPhone, iPad, Apple Watch — better
Requires iOS26.018.0 — better
Further details — not scored
Size145 MB4 MB
Age rating12+4+
DeveloperKpaw, LLCQR LLC

In-app purchases

1 purchases

Iris

Subscriptions1
  • Premium access3 Days trial$4.991 Month
1 purchases

OS3

Subscriptions1
  • OS3 Pro$12.991 Month

Questions

Is Iris free?
Iris is free to download, with in-app purchases available.
Is OS3 free?
OS3 is free to download, with in-app purchases available.
Do Iris or OS3 have ads?
Neither Iris nor OS3 shows ads.
Which is updated more often, Iris or OS3?
Iris ships an update fortnightly, and OS3 monthly. Most recently, Iris was updated on October 7, 2026 and OS3 on October 16, 2026.

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