BeatMirror: Track BPM

Name: BeatMirror: Track BPM
Price: 6.99 USD
Rating: 4.7 (244 reviews)
Author: Ten Kettles Inc.

By: Ten Kettles Inc.

Tempo detector for musicians

Features & Capabilities

BeatMirror uses your device's built-in microphone to detect musical tempo in real-time. It presents a scrollable tempo graph and a tempo history view so you can see trends as you practice, perfect for building your internal rhythm or checking the tempo of songs in real time.

Key features include a wide tempo range (35-220 BPM), fast and accurate detection across time signatures and styles, a real-time graph with zoom, easy sharing of tempo graphs, and a tempo keyboard for quick target tempo setup. Visual feedback lets you see when you’re ahead or behind, while the optional count-in and triplet mode boost accuracy. An in-app tutorial helps you get started quickly, whether you’re practicing solo, in a band, or preparing for a performance.

User Growth & Download Statistics

App Music & Audio Education

By:

Ten Kettles Inc.

Rating:

4.70

(244)

Version:

3.0.0 Last updated: 2025-04-15

Version code:

852947476

Creation date:

2017-06-12

Compatible devices:

Size:

4.35MB

Price:

6.99

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-10

Compare stats and ranking:

Ranking

# 104,918 ▲ 105

For Developers

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Contact the developer

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Developed by:

Ten Kettles Inc.

Apple Apps Store

https://apps.apple.com/us/app/beatmirror-track-bpm/id1086730929

Website:

http://www.tenkettles.com/beatmirror/

User Reviews

BeatMirror offers real-time tempo detection with a clear tempo line and a target tempo indicator, making it a strong practice, rehearsal, and gig aid. It gives immediate feedback on tempo stability and drift, helping musicians tighten timing. However, reviews repeatedly flag inconsistent BPM readings, occasional tracking drops or 'gray-out' moments during sections, and compatibility issues with some devices or instruments. Users also want auto-detect mode, finer range/zoom controls, and better onboarding. When readings hold, it's a powerful tempo-training tool.

Pros

Real-time accurate tempo detection with a clear tempo line/graph.
Target tempo feature with an illuminated strip showing when you stay near the tempo.
Strong training tool that helps improve timing across practice, rehearsals, and gigs.
Real-time feedback on tempo stability and drift.
Works with iPhone/iPad and can display tempo on external screens for band visibility.

Cons

Occasional inconsistent BPM readings and reliance on mic input, leading to unreliable readings in some setups.
Tracking can drop or go gray during sections or bridges, causing readings to pause or disappear.
Compatibility issues with certain devices/instruments (e.g., some iPhones or guitars fail to read BPM).
Feature gaps and usability requests such as auto-detect mode, finer range/zoom controls, and better onboarding/documentation.

Recent reviews

I'm trying to use this to get faster at playing guitar and I'm comparing it to my metronome. The beat detection (for me bpm of picking speed) seems inaccurate. Anyone have success with this or suggestions? I'd love for this to work, would be a great tool.

by Ml*****, 2026-03-20

Used for about 90 minutes while practicing with my ensemble and my iPhone 15 pro was hot to the touch when we were done. Don’t know how hot but uncomfortably warm. Didn’t check battery drain.

by Ha*****, 2026-03-10

Gigging musician here. Just started using it, but I’d say this version makes the Beat Mirror app superior to other tempo detectors that I and bandmates have previously bought and used. Seems to be very accurate. Displays tempo and draws a line in real time. Two different zoom settings. Does fine with 3/4 time also when some others do not. Target tempo is a standout feature, with an illuminated strip showing when you’re staying close. Haven’t used the range option, because for our use it’s way too broad, even though you can slide the range up and down. Wish one could further customize the range to better zoom in on the tempo graph. But overall, really like it so far.