Tremolo – BPM Calculator
Delay Time & Tempo Converter
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Enter any BPM and instantly get exact ms and Hz for every note value. Perfect for delay pedals, LFOs, and setlist prep.
Stop doing delay math in your head. Tremolo gives you exact millisecond and Hz values for any BPM in seconds.
Dial in your delay pedal, sync your LFO, or prep your setlist timings — no mental arithmetic required.
— KEY FEATURES —
• BPM Calculator — enter any tempo from 1–400 BPM and instantly see precise ms and Hz for your chosen note value
• Four calculator subdivisions — quarter, eighth, triplet, and sixteenth note, selectable with a single tap
• Full subdivision reference — all 8 standard note values (whole, half, quarter, eighth, triplet, sixteenth, 32nd, dotted eighth) with ratios and real-world use cases
• Dotted eighth shortcut — find that classic U2-style delay or reggae skank timing without guessing
• Songs list — save any track by name, BPM, and preferred subdivision; the delay time is shown right in the row
• Six pre-loaded songs — Comfortably Numb, Eye of the Tiger, Superstition, Billie Jean, Hotel California, and Ode to Joy get you started instantly
• Fully offline — no account, no ads, no tracking
Whether you're a guitarist tweaking delay pedal feedback, a producer syncing an arpeggiator, or a live musician building a setlist cheat sheet, Tremolo keeps the math out of your way so you can focus on the music.
— Tremolo BPM Helper PREMIUM —
Premium unlocks the full Tremolo experience: unlimited saved songs and setlists, all 8 subdivision values with both Hz and ms readouts, dotted and triplet delay shortcuts, and an entirely ad-free app that runs offline forever.
Subscription options:
• Weekly — $9.99 / week
• Yearly — $49.99 / year (includes a 3-day free trial)
Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the period. Manage or cancel anytime in your Apple Account settings.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://pnkl26.web.app/privacy-policy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Version 1.0
• BPM Calculator: enter any tempo (1–400 BPM) and get instant millisecond and Hz readouts for quarter, eighth, triplet, or sixteenth notes
• Subdivisions reference: full guide to all 8 note values (whole, half, quarter, eighth, triplet, sixteenth, 32nd, dotted eighth) with timing ratios and musical use cases
• Songs list: save songs with name, BPM, and preferred subdivision; delay time shown per row
• Six pre-loaded songs to get you started (Comfortably Numb, Eye of the Tiger, Superstition, Billie Jean, Hotel California, Ode to Joy)
• Fully offline — no account required, no ads, no tracking
The developer, Linh Phan Nhat Khanh, 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
- Linh Phan Nhat Khanh
- Size
- 691.2 KB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Tremolo BPM Helper Yearly $49.99
- Tremolo BPM Helper Weekly $9.99
- Copyright
- © 2026 PNKL