# OverDrive: Chord Detector — Vocal Remover & Slow Practice

> Vocal Remover & Slow Practice (iPhone/iPad app by 佳虎 王.)

- Source: https://appshunter.io/ios/app/overdrive-chord-detector/id6802359142 (this page in markdown: same URL + `.md`)
- Developer: [佳虎 王](https://appshunter.io/developer/6800971181)
- Category: Music, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.4 · 219 MB
- Languages: American English, Chinese (Simplified, China)
- Released: 2026-08-21
- Data updated: 2026-11-06

## What is OverDrive?

Import audio, detect its chords, split vocals and instruments, and loop the hard parts slowly.
Stem separation and looping are free with no time limit. Audio stays on your device.
That's on your own. With a band, everyone shares one chart and one playhead.

■ Chord detection, stems and phrase looping
Import a song and get its chart in about ten seconds, right on the device; split it
into drums, bass, other and vocals whenever you need to, then loop one phrase as
long as you like: 0.5x-1.5x without changing pitch, solo or mute any stem.
Paste in the lyrics and the phone listens to the song and puts each line on its
bars (needs iOS 26).

■ Backing tracks for practising alone
Drums, bass and guitar follow your chart. Nine styles (pop, rock, ballad,
country, shuffle blues, reggae, funk, jazz swing, bossa nova), each with two
alternate arrangements, and each part can be muted.
The harmony comes from your chart: what you write is what you hear.

■ Video practice
Import a lesson video from your phone, mark in and out, loop those few seconds
full screen, slowed down if you like.

■ Number-system charts
No staves, no tabs, just the numbers (1 5 6 4).
Change the key and every chord on every screen follows.

■ The chart moves by itself, so your hands stay on the instrument
Hit play and the chart advances at the song's BPM: which beat you're on,
what this bar is, what comes next. Section changes come with a countdown.

■ Songs are written in sections
Intro, verse, chorus, bridge. Each section carries its own progression and
repeat count: you are in the chorus, it goes 1 5 4 6, pass 2 of 3.
Singers can switch to the lyrics view and get prompted line by line.
A full chart can also live on your Home Screen: pick a song in Settings and
add the widget.

■ On iPad, it's the music stand
The rehearsal view lays out the whole song like paper: one panel per section,
four bars to a row, lit up to wherever the band is. Put it on a stand and play.

■ Local network sync, no internet needed
One person hosts, everyone else types a four-digit room code. The leader starts,
changes tempo, jumps sections, locks a loop, and every playhead moves together.
No server, no account, no sign-in.

■ Rehearsal recording
Plug in your mixer or audio interface and record the whole session. Every time
someone hits play it becomes a take; keep the ones worth keeping and export m4a.

■ Full-song overview and PDF export
What you see is what you print: the same chart, the same page.

■ Subscription
OverDrive Pro offers monthly and yearly auto-renewable subscriptions. The price for your
storefront is shown in the App Store, and in the app, before you confirm.
It unlocks the AI transcriber, hosting a room and PDF export. Everything else
is free with no time limit, including on-device stem separation, looping,
video practice, and joining someone else's room, and for the first 14 days
from your original App Store download those three are free as well.
Free access does not automatically become a paid subscription. Subscribing starts billing;
any offer is subject to Apple’s confirmation screen.
Payment is charged to your Apple Account at confirmation of purchase. The
subscription renews automatically unless auto-renew is turned off at least 24
hours before the end of the current period. Manage or cancel it in
Settings > Apple Account > Subscriptions.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://overdrive.work/privacy

—

The interface is available in English and Simplified Chinese. OverDrive collects
nothing: everything stays on your device and works entirely offline.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $4.99 | per month |
| Yearly | $39.99 | per year |


## Is OverDrive safe?

Not enough ratings yet to assess OverDrive.

## Is OverDrive legit?

OverDrive: Chord Detector has limited verification signals. The AppsHunter Legitimacy Score for OverDrive is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.3.7 — 2026-11-04

See Pro features and remaining free-access time more clearly, with a dismissible introduction during free access. AI transcription, room hosting and PDF export are free for 14 days from your original App Store download. Stem separation, looping and video practice remain free. Active subscriptions are unaffected.

### 1.3.6 — 2026-11-04

Adds layouts for iPhone Duo in open and folded states, with improved rehearsal, stem practice and section editing controls. Keeps the classic neon home screen and the existing design on other iPhones.

### 1.3.5 — 2026-10-08

■ New icon
A cyan O with two drumsticks.

### 1.3.4 — 2026-09-29

This version makes it much easier to get a song in.

■ AI transcriber takes videos
Tap + and pick a video straight from Photos, a gig recording or a lesson;
the app pulls out the audio and finds the chords.

■ Audio from other apps
An mp3 or m4a a bandmate sends you goes in with one step: open it, choose
Open in… → OverDrive, and you land on that song's page. Works from Files too.

■ Home
AI transcriber is now the first door.

■ Ready for iOS 27
On iOS 27, AI transcriber finds the key and song sections more accurately.

### 1.3.2 — 2026-09-21

Two new things this time, plus a pass over every button in the app.

■ Home chart
Pick a song in Settings and a full chart shows up on your Home Screen: one panel
per section, four bars to a row, in one of three styles (signage, panel, bare).
Long-press the Home Screen, tap +, and look for OverDrive Chart.
The last-rehearsal widget was clipped on both sides at its smallest size; fixed.

■ Lyrics
Once a song has been transcribed, the practice page gets a Lyrics button: paste
the words, the phone listens to the song and places each line on its bars, and
you check the result before adding it to the chart. Lines it couldn't make out
are greyed so you know which ones to look at.
Recognition runs on the device and needs iOS 26; the first run downloads a model.

■ Buttons
Every button was gone over: full-width actions, small option chips, the
cancel/confirm pair at the bottom of sheets, tappable list rows. Sizes and
selected states now match across the app. The host and join screens have a
proper top bar.

■ Also
The white scroll bar on the right edge of the dark interface is gone.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-06.*