UDTalk vs Tsukibyobu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UDTalk
Facilitates universal communication by translating speech and handwriting into text across devices. Ideal for bridging language barriers and supporting interactions with deaf individuals. Connects via Wi-Fi or internet for seamless real-time translation.
- Speech recognition translation
- Handwriting recognition translation
- Automatic language translation
- Wi-Fi and internet connectivity
- Cross-device communication
- Supports deaf communication
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UD Talk can deliver to support universal communication in your life. Especially, it is for useful between deaf people and us or other languages, and so on. You can connect other devices using wifi or internet. You can send your speech to other devices using speech recognition, hand writing. Languages is translated automatically (to your native language). For example, if you want to see Japanese content, you can use it. About Auto renewal subscriptions - Items Compact Plan 1 month (It's renewed automatically.): 980 yen 1 week (It's renewed automatically.): 480 yen + 3 days free trial It'll be paid in the Apple ID you use. - About an automatic renewal and accounting. Use will be "automatic continuation renewal". Use is renewed automatically within 24 hours which end and charged for the iTunes account you use. - About a stop of confirmation of setting and an automatic renewal. It's possible to be to turn off an automatic renewal and suspend an automatic renewal of a license from customer's account setting screen before more than 24 hours of a license period end. It's possible to change an automatic renewal from a "Settings > iTunes &App Store > Tap your Apple ID area > View Apple ID > Tap subscriptions "manage". - About cancellation. It isn't possible to do change in the period and cancellation during "Compact Plan" use. - Private policy http://udtalk.jp/privacy/ - Terms of use https://udtalk.jp/license_of_app/ - About subscriptions http://udtalk.jp/compact/
Tsukibyobu
This app transforms your device into a Japanese folding screen displaying a dynamic night sky. The moon's phase changes with the device's fold or a screen slider, accompanied by seasonal music and narrated stories. Enjoy a serene, ad-free experience with beautiful Rinpa-style art.
- Dynamic moon phase display
- Rinpa school art style
- Seasonal music and stories
- Interactive moon phase narration
- Foldable device integration
- Slider for non-foldable devices
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Tsukibyobu turns the iPhone in your hand into a byobu, a Japanese folding screen, and hangs a night inside it. Closed, it is the new moon. Open, the full. On a foldable iPhone the hinge angle becomes the phase of the moon: open it a little for a crescent, halfway for the first quarter, all the way for the full moon. Stand it half-open on your desk and the two displays become the two panels of a screen. The paintings follow the Rinpa school: tarnished gold-leaf mist, ultramarine and malachite hills, a silver-leaf moon, gold dust across the night sky. Mt. Fuji and a lake, Higashiyama, a pine beach, a mountain village. Plum in spring, irises in summer, pampas grass in autumn, snow-laden bamboo in winter. Touch the moon and it tells you a story about tonight's phase. Turn on the sound for a faint, koto-like music whose scale changes with the season: brighter in spring, quieter in winter. No notifications, no ads, no sign-in. Set it down, watch, and close it when the night is over. On iPhones that do not fold, a slider at the bottom of the screen opens the moon.
Screenshots
Verdict
The clearest difference is review sentiment: Tsukibyobu at 100% against UDTalk's 56%. Tsukibyobu also leads on update cadence (daily vs every 10 days). UDTalk's advantage is device support (4 vs 1) and iOS requirement (15.0 vs 27.0). On price, ads, in-app purchases and monetization model 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. UDTalk sells 2 in-app purchases, starting at $1.99 per 7 days and Tsukibyobu sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
UDTalk ships an update every 10 days, Tsukibyobu daily. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.
| Parameter | UDTalk | Tsukibyobu |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 55.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 — better | — |
| Update frequency | Every 10 days | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone |
| Requires iOS | 15.0 — better | 27.0 |
| Further details — not scored | ||
| Size | 53 MB | 4 MB |
| Age rating | 9+ | 4+ |
| Developer | Shamrock Records, Inc. | Yosuke Fujii |
Customer experience
UDTalk
Tsukibyobu
In-app purchases
UDTalk
- Compact Plan (1 week)$1.997 Days
- Compact Plan (1 month)$2.991 Month
Tsukibyobu
- Sound Box$2.99









