Comparison

grug vs KUU

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

Head to head
About

grug

Receive a daily dose of simple, profound wisdom to help you navigate life's challenges. This app offers straightforward truths and accompanying artwork to inspire personal growth and contentment. It focuses on mindfulness and taking small steps each day.

Highlights
  • Daily wisdom sharing
  • Accompanying artwork
  • Home screen widget
  • Customizable themes
  • Light and dark modes
  • No login or tracking
Features
Read full description

grug know: big scary just many small rock wearing fur coat. every sunrise grug share one wisdom. help you break today rock into small piece. no fancy word. no complicated. just simple truth that work. **what grug do:** - share daily wisdom when sun rise - draw grug dream on wisdom - share with other grug - widget show wisdom on cave - grug work in light and dark cave or give grug shiny color grug not guru. grug just know: small step every day make mountain move. perfect never come. better start with broken stick today than wait for perfect stick tomorrow. wisdom come from real life. fear work love pain growth. grug speak simple but truth hit deep. like "fear just smoke. real but not solid.” and "wanting make poor. grateful make rich." each day different wisdom. truth waiting. grug help see: you already enough. just need pick up one small rock today. app simple like grug brain. open. read wisdom. maybe draw feeling. that all. no login. no cloud. no follow. just you and today truth. remember. tomorrow not here. only today real. grug help make today count. Terms of Service: https://ocho.so/terms Privacy Policy: https://ocho.so/privacy

About

KUU

This app helps declutter your mind by allowing you to speak your thoughts. It transcribes your voice and categorizes your ideas into 'Now,' 'Later,' 'Park,' and 'Let go' to reduce mental load.

Highlights
  • Voice-to-text transcription
  • Automatic thought categorization
  • Four distinct holding spaces for ideas
  • Private iCloud syncing
  • Menu bar integration for Mac
  • Focus on mental space, not productivity
Features
Read full description

When your head is full, it can be hard to know what belongs in front of you and what can wait. KUU is a quiet voice-first app for brain dumps, overthinking, scattered ideas, and the small worries you do not want to keep carrying. You can speak what is on your mind. It does not need to be organized. KUU turns what you said into text and gently separates it four ways: Now / Later / Park / Let go. The point is not to do more. It is to make a little room in your head. ■ When to use it - Before bed, when your mind starts running. - When the same thought keeps looping. - When task managers have started to feel heavy. - When you want to be heard, but do not want to send it to anyone. - When talking out loud helps you understand what you mean. - When an idea appears before it has a shape. - When you do not want to forget something, but it is not ready to act on. - When voice feels easier than typing. - When your hands are busy: driving, cooking, getting ready, or moving through the day. ■ The 4 ways Now — Something that may feel lighter if you look at it soon. Later — Something to return to at another time. Park — An idea, feeling, or question that does not need an answer yet. Let go — A worry or thought you may not need to keep holding. These are not priorities or scores. They are quiet ways to hold what you said. ■ How KUU is different - Unlike a notes app, KUU starts with speaking, not writing. - Unlike a task manager, KUU does not turn every thought into something to do. - Unlike an AI chat, KUU does not give long advice or add more things to think about. KUU receives what you said and separates it into smaller, easier pieces. ■ What you can do - Speak naturally, even when your thoughts are all mixed up. - See your words as text. - See only what needs your attention now. - Keep later thoughts, parked ideas, and things to let go in their own places. - Revisit what you have said when you want to. ■ Voice and data - Raw audio is not kept. - What you said is saved as text so you can look back later. - Sorting uses AI. Only your words as text are sent, and nothing is kept. - Your saved text syncs only to your private iCloud. - Other people, and the app developer, cannot read it. ■ On your Mac KUU waits quietly in the menu bar. You can speak without opening a window, and it carries all the way through to Now / Later / Park / Let go. What you said before is always a glance away. KUU is not here to add more thoughts. It is here for the space between: “I do not need to solve this right away” and “I do not want to keep holding it in my head.” — Speaking makes room in your mind. Terms of Use: https://kuu-zen.com/en/terms/ Privacy Policy: https://kuu-zen.com/en/privacy/

Screenshots

grug4 screens
KUU4 screens

Verdict

The call

grug and KUU both sit at 4.8 stars, but that hides the real split: 96% of grug's written reviews are positive against 52% of KUU's. grug also leads on in-app purchases (none vs 3) and ads (none vs shown). KUU's advantage is device support (4 vs 1). On price, rating and update cadence 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. KUU sells 3 in-app purchases, starting at $5.99 per month. grug asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for grug against 4.9 for KUU. That said, the two scores are not equally well evidenced: grug has 3.4K ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 96% of grug's written reviews are positive against 52% of KUU's.

UpkeepUpdate frequency

grug ships an update weekly, KUU every 3 days. Both last shipped on November 5, 2026.

Scorecard7 real differences · 3 level
grug versus KUU: the parameters behind the verdict, then further details
ParametergrugKUU
PriceFreeFree
Rating4.8 (3.4K ratings)4.9 (9 ratings) — better
Positive reviews96.3% of reviews — better51.6% of reviews
Number of ratings3.4K — better9
Update frequencyWeeklyEvery 3 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad, Mac, Apple Watch — better
Requires iOS18.0 — better26.0
Further details — not scored
Size22 MB36 MB
Age rating4+4+
DeveloperOchoShunya Yamashita

Customer experience

grug

All ratings3,363 ratings
Positive96.5%
Neutral1.8%
Negative1.6%
Written reviews682 reviews
Positive96.3%
Neutral1.8%
Negative1.9%

KUU

All ratings9 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews31 reviews
Positive51.6%
Neutral12.9%
Negative35.5%

In-app purchases

None

grug

No in-app purchases

3 purchases

KUU

Subscriptions2
  • KUU+ Monthly$5.991 Month
  • KUU+ Yearly3 Days trial$39.991 Year
One-time1
  • KUU+ Lifetime$89.99

Questions

Is grug free?
grug is free to download, with no in-app purchases.
Is KUU free?
KUU is free to download, with in-app purchases available.
Which has better reviews, grug or KUU?
KUU is rated higher. grug averages 4.8 out of 5 from 3.4K ratings, while KUU averages 4.9 from 9 ratings.
Do grug or KUU have ads?
KUU shows ads; grug does not.
Which is updated more often, grug or KUU?
grug ships an update weekly, and KUU every 3 days. Most recently, grug was updated on November 5, 2026 and KUU on November 5, 2026.

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