A tuner, metronome, and a tone generator all on one screen. A perfect toolkit for all musicians.

Simple and easy - Treble provides all the essential tools needed for practices and performances in a simple, single layout. All of our tools are extremely easy to use - just tap once and you're all ready to go.

Unrivaled accuracy - Treble uses a highly sophisticated audio analysis and generation framework that is currently unrivaled in the industry. Treble is the most accurate tuning and metronome experience on mobile.

Smart settings - Change the transposition to match the instrument you're practicing. Change the pitch standard to match the group you're playing with. Change the sensitivity of the tuner to match your skill and preference. These settings were made with musicians in mind.

What’s New

Version 1.1

Advanced Metronome is here!
- Subdivisions & Beats
- Tap for tempo
- New sounds

Make it your own!
- Pick from 1000+ emojis
- 18 colors available

- Metronome minus button now works properly.

Ratings and Reviews

4.3 out of 5
44 Ratings

44 Ratings

Chickennnbn ,

Best tuner out there except for one thing

I love this app because I use it everyday when I practice. It is super helpful.
HOWEVER, the metronome does not work. There isn’t a sound produced once you click start.
I tried adjusting my phones volume but it didn’t work. Please fix this. Once this is fixed I will change my rating to 5 stars.

Bobette260 ,

No Metronome

I got this app hoping to get a 3-in-1 kind of thing, but the metronome doesn’t work! The tuner is great and very accurate, but there is no sound when I click on the “start” button for the metronome.

chukar75 ,

Disappointed 😢

Was looking forward to using this app. It doesn’t seem to do all of it’s basic functions: tone does change, but all the metronome does is stop the tone and tapping only changes the numerals - never a peep from the speaker 🤐😪.
I really wanted this to work!! Please, fix the bug(s) soon. I’m sure many of us will be very pleased with that. Thanks C 🎻🌵


Jun Ho Hong
35.6 MB

Requires iOS 9.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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