Beat Book vs KUU
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Beat Book
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Beat Book: Capture and relive your live experiences Record your live experiences in words and photos, and preserve them as unforgettable memories. With Beat Book, you can easily record the basic information of your live experiences, such as date, location, and title. You can also add notes and images to keep the passion of that moment alive forever. ▼ Share your excitement with others. Beat Book's unique conversation-style recording feature allows you to visually capture and share the conversations and emotions of your live experiences. You can easily relive the excitement, laughter, and shared emotions of that moment. ▼ The one-of-a-kind app made for live fans. Beat Book is the app for you if you love live music and support your favorite idols. With Beat Book, you can make your live experience even more memorable. ▼ Main features: ・Manage all your live experiences in one place, including date, location, title, notes, and images. ・Visually record conversation content in a chat-like style. ・Intuitive interface for keeping your memories vivid. ・Download Beat Book today and start capturing your live experiences!
KUU
This app provides a voice-first method for offloading scattered thoughts, worries, and ideas. It transcribes your spoken words and categorizes them into 'Now', 'Later', 'Park', and 'Let go' sections to help clear your mind.
- Voice-to-text transcription
- Thought categorization (Now, Later, Park, Let go)
- ADHD-friendly design
- Private iCloud sync
- Menu bar integration for Mac
- No raw audio storage
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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
Verdict
The clearest difference is in-app purchases: Beat Book at none against KUU's 3. Beat Book also leads on ads (none vs shown) and iOS requirement (12.0 vs 26.0). KUU's advantage is update cadence (every 3 days vs every 10 days). On price 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
Both are free to download. KUU sells 3 in-app purchases, starting at $5.99 per month. Beat Book asks for nothing beyond the download.
Beat Book ships an update every 10 days, KUU every 3 days. The most recent releases landed on November 8, 2026 and November 10, 2026 respectively.
| Parameter | Beat Book | KUU |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (9 ratings) — better |
| Positive reviews | — | 51.5% of reviews |
| Number of ratings | — | 9 — better |
| Update frequency | Every 10 days | Every 3 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 12.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 36 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryo Nishimura | Shunya Yamashita |
In-app purchases
Beat Book
No in-app purchases
KUU
- KUU+ Monthly$5.991 Month
- KUU+ Yearly3 Days trial$39.991 Year
- KUU+ Lifetime$89.99









