Tremo: Smart Baby Rattle
Shake to play. Sound & safe
Free · In‑App Purchases
A rattle that lives in your iPhone: every shake answers with a different sound — from a speaker, while the screen stays black.
Tremo turns your iPhone (in a thick baby case) into a rattle that answers your baby's movement with sound. A light shake is a soft chime, a sharp one a bright beat, three in a row a little rhythm. The sound plays through a Bluetooth speaker across the room — the phone in your baby's hands stays dark and silent.
WHY PARENTS LOVE IT
• Cause and effect: at 5–14 months your baby discovers "I shook — something happened". A regular rattle has one sound forever. Tremo has dozens, and they respond to how hard, how fast and which way.
• Seven sound sets that grow with your baby: Beads, Bells, Drops, Little drum, Xylophone, Animals (coming soon) — and My voice.
• My voice: record "peekaboo" and your baby's name. The rattle answers with the voice they love most.
• Under 60 ms from shake to sound on a good speaker. We measure your speaker's latency and tell you honestly.
BUILT FOR SAFETY
• The screen is black for the whole play. No pictures, no light, no touches.
• Sound comes from a speaker, never from the phone near the face. A parent-set volume ceiling lives in the audio engine itself.
• Play stops by itself: after 5 or 10 minutes, if the phone falls, gets hot, runs low on battery, loses the speaker, or lies still for a minute.
• Exit is for grown-ups only: Guided Access, an Apple Watch button, or two fingers held in two corners.
• Free: one play a day. Tremo+ has no cap, but suggests a break after three. Ten minutes per play is the limit for everyone.
APPLE WATCH
Your remote on the wrist: a timer, a gentle tap for every shake, and one End button.
DIARY
Every play is saved: minutes, shakes, rhythms, favourite sets — and a hint for each month, with the honest note that timing is individual.
PRIVACY
No analytics, no third-party SDKs, no account. Recordings and the diary never leave your device.
WHAT YOU NEED
An iPhone in a thick silicone baby case (any shockproof case will do), a Bluetooth speaker (recommended) and a parent nearby. Tremo is a toy for playing together, not for keeping a baby busy.
Tremo+ is available as a monthly or yearly subscription (with a 7-day free trial) or a one-time lifetime purchase. Payment is charged to your Apple ID account; subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in your Apple ID settings.
Privacy Policy: https://evgeniybruchkovskiy.github.io/tremo-legal/privacy.html
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Yevhenii Bruchkovskyi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yevhenii Bruchkovskyi
- Size
- 5.1 MB
- Category
- Education
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Languages
English and 11 more
- English, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, Turkish, Ukrainian
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Tremo+ Lifetime $39.99
- Tremo+ Yearly $19.99
- Tremo+ Monthly $3.99
- Copyright
- © 2026 Yevhenii Bruchkovskyi
