Comparison

Kagi Assistant vs Yeah Yeah

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

Head to head
About

Kagi Assistant

Access over 30 leading AI models for private, ad-free interactions. Get grounded answers with web access, create custom assistants, and manage conversations with adjustable retention controls. Designed for thinkers, creators, and professionals to enhance problem-solving and research.

Highlights
  • Access 30+ leading AI models
  • Private chat with adjustable retention
  • Create custom assistants
  • Web access for grounded answers
  • Quick and Research Assistant modes
  • Edit prompts and switch models mid-conversation
Features
Read full description

Kagi Assistant combines Kagi Search with 30+ leading AI models, giving you the best of search and AI in one fast, ad-free app. Get current, source-backed answers, choose the right model for any task, and work without ads, tracking, or engagement-driven noise. • Combine Kagi Search with leading AI models Kagi Assistant pairs the world’s best search engine with state-of-the-art AI models for current, source-backed answers. • Choose from 30+ AI models Switch models at any point in a conversation without starting over. • Keep conversations private Your conversations are never used to train AI models, and your account information is never shared with model providers. Threads are deleted after 24 hours by default, with controls for changing retention. • Create custom assistants Configure assistants for research, coding, writing, or other workflows using custom instructions, models, web access, and Kagi Lenses. • Go quick or go deep Use Quick Assistant for straightforward questions or Research Assistant for complex, multi-step investigations. • Work your way Edit prompts, switch models mid-conversation, upload files, and organize threads into folders. Model and feature availability varies by subscription plan. By using Kagi Assistant, you agree to our Privacy Policy and Terms of Use. Privacy Policy: https://kagi.com/privacy Terms of Use: https://kagi.com/privacy#Terms-of-use

About

Yeah Yeah

Features
Read full description

For all the things you said you would get around to. Yeah Yeah brings your calendar and to-dos together. Put the things you want to do soon in Yeah Yeah. Leave the maybes in Someday. You do not have to give every thought a deadline. CAPTURE IT YOUR WAY Type, speak, take a photo, or choose one from your library. Share links, text and images from other apps. Add multiple photos to a task and open links in its title or notes. YOUR DAY, WITH ROOM FOR MORE See today's tasks alongside your undated Yeah Yeah list. Connect your iPhone calendars to see events in the same view. Swipe between days and open the month calendar to look further ahead. Drag tasks to reorder, move or duplicate them, or select several at once. Named dividers let you organize things your way. HOW SOON IS YOUR "YEAH, YEAH"? Choose 3, 7 or 14 days, or your own period from 1 to 30 days. You can also set a specific date and time, with an optional reminder for each timed task. A QUICK SWIPE THROUGH SOMEDAY When you feel like it, review your thoughts as a deck of cards. Right for Yeah Yeah, left for Not yet. Repeated Not yets move a thought to Resting. It is still there, just taking a nap from reminders. Bring it back whenever you want. THE EVERYDAY TOOLS ARE FREE • Unlimited tasks, with text, voice and photo capture • Calendar integration and task reminders • Review, reorder, move, duplicate and share • Your full completion history, without a date limit MAKE IT YOURS WITH PRO A single purchase unlocks Cat and Sakura themes, plus Home Screen and Lock Screen widgets. Preview the themes before buying. There is no subscription. See your local price on the purchase screen. No account and no ads. Tasks stay on your device. Speech recognition and title generation on supported devices run on device. Link previews connect to the linked website; Apple and RevenueCat handle purchases. Automatic cross-device sync is not included. Requires iOS 26 or later. Voice input and title generation depend on device and language-resource availability. Text entry remains available. The app supports English and Japanese.

Screenshots

Kagi Assistant4 screens
Yeah Yeah4 screens

Verdict

The call

The clearest difference is iOS requirement: Kagi Assistant at 18.0 against Yeah Yeah's 26.0. On price, ads, in-app purchases and device support 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. Kagi Assistant sells 1 in-app purchase, starting at $28.99 per month and Yeah Yeah sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 9 level
Kagi Assistant versus Yeah Yeah: the parameters behind the verdict, then further details
ParameterKagi AssistantYeah Yeah
PriceFreeFree
Rating4.8 (36 ratings) — better—
Positive reviews65.0% of reviews—
Number of ratings36 — better—
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS18.0 — better26.0
Further details — not scored
Size30 MB16 MB
Age rating17+4+
DeveloperKagi Inc.Kodai Aoyama

In-app purchases

1 purchases

Kagi Assistant

Subscriptions1
  • Ultimate Monthly$28.991 Month
1 purchases

Yeah Yeah

One-time1
  • Yeah Yeah Pro$3.00

Questions

Is Kagi Assistant free?
Kagi Assistant is free to download, with in-app purchases available.
Is Yeah Yeah free?
Yeah Yeah is free to download, with in-app purchases available.
Do Kagi Assistant or Yeah Yeah have ads?
Neither Kagi Assistant nor Yeah Yeah shows ads.

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