Best apps to change the pitch of a song (and Moises alternatives)

The best app to change the pitch of a song depends on where the song lives. For a file on your phone, Moises is the all-in-one pick: it changes the key and the speed and, even on the free plan, separates vocals, drums and bass so you can sing over the music without the original voice. For YouTube or Spotify in a browser, the Transpose extension shifts pitch for free. On Android, Music Speed Changer does it free with ads; on iPhone, Anytune. Amazing Slow Downer is a one-time purchase on every platform, Capo adds chord detection on Apple devices and Transcribe! is the computer tool for learning parts by ear. For free stems, BandLab’s Splitter. And for your own demo or backing track, Zoundroom’s multitrack editor changes the key in one tap and records your voice over it.

Three jobs hide behind “changing the pitch”. Pitch shifting moves every note up or down in semitones while the tempo stays the same. Changing the key is the same move expressed as a destination: from E to D is two semitones down. Time-stretching changes the speed and keeps the pitch. Whatever you shift, the whole file moves, voice included, which is why stem separation matters when you want to sing a song in your key: you need the music without the original singer.

Apps to change the pitch of a song compared

App	Best for	Pitch and speed	Separates stems	Free version	Paid from	Platforms
Moises	Singing over a song in your key, without the original vocal	Key changer to any of the 12 keys; speed changer	Yes: vocals, drums and bass on the free plan, more instruments with a subscription	Limited uploads each month	Premium $5.99/month or $39.99/year	iPhone, iPad, Mac, Android, web, desktop app
Transpose	YouTube, Spotify and other sites in a browser	±12 semitones plus fine-tuning; 25–400% speed	In its Studio tools (free on 3 songs)	Pitch, speed and loops on every song	$4.99/month, $34.99/year or $149.99 lifetime	Chrome and Edge extension
Music Speed Changer	Free pitch and speed on Android	±24 semitones; 15–500% speed	Track splitter (4 GB of RAM, 64-bit Android)	Yes, with ads	In-app purchases $0.99–$9.99	Android
Anytune	Practicing on iPhone with loops and marks	Pitch in the free app, ±24 semitones with the Studio Pack; tempo without pitch change	Audio isolation in the Studio Pack	Yes, with ads	Packs from $1.99	iPhone, iPad
Amazing Slow Downer	One purchase, every platform	Key or tuning change; 25–200% speed	No	Lite version	$9.95 Android, $14.99 iPhone, $39.95 Mac or Windows	iPhone, iPad, Android, Mac, Windows
Capo	Learning by ear with detected chords on Apple devices	Transpose to other keys; slow down	Instrument and vocal isolation	Free download; edits aren’t saved without a subscription	$4.99/month or $19.99/year (iPhone, iPad)	iPhone, iPad, Mac
Transcribe!	Working out parts by ear on a computer	Transpose and fine-tune; slow down	Not listed	30-day trial	$39 one-time	Windows, Mac, Linux
BandLab Splitter	Free stems with key and speed controls	Key and speed tweaks	Yes: 2 or 4 stems free	Yes	Pro $14.99/month or $149.99/year	Android, iPhone, iPad, web
Zoundroom	Your own demo or backing track, then recording your voice over it	±12 semitones or a target key in one tap; 50–150% speed	No	5 editing sessions, 2 projects	Pro €7.99/month or €59.99/year	iPhone, Android, web (app.zoundroom.com)
YouTube	A quick slow-down of a video	Speed only, 0.25× to 2×; no pitch control	No	Yes	Free	Web, phone, TV

Prices are US store or official-site prices before tax; Zoundroom lists its prices in euros. They change often, so check the store before you pay.

How we compared them

Every cell comes from official sources: App Store and Google Play listings, each developer’s website, pricing page or help center, all checked on October 2, 2026, with links at the end. The criteria are the ones that decide whether an app helps you sing or play a song in another key: how far it shifts the pitch, whether the speed changes independently, whether it can remove the original vocal or an instrument, what is free, what you pay and where it runs. We didn’t run hands-on tests; this compares what each company documents and orders the picks by how well they fit someone practicing or singing a song in their own key.

Moises: best for singing over a song in your key, without the original vocal

Moises is the reference for a reason: it combines the three things a singer needs in one app. According to its App Store listing, the free plan includes vocal, drum and bass separation, chord detection, a click track, pitch shifting and BPM detection; the key changer detects the song’s key and transposes it, and the chords with it, to any of the 12 keys. The speed changer slows a hard section down with one tap. Paid plans separate more instruments (guitar, piano, strings and others): on the US App Store, Premium costs $5.99 a month or $39.99 a year and Pro $29.99 a month. Moises runs on iPhone, iPad, Mac with Apple silicon, Android, the web and a desktop app.

Choose it if: you want to take a song, remove the lead vocal and sing it in your key, on your phone.

Its limit: the free plan has a limited number of uploads each month (its help center puts it at 5 songs of up to 5 minutes), so it’s a taster rather than a practice library.

Transpose: best for YouTube and Spotify in the browser

Transpose is a browser extension for Chrome and Edge that changes pitch and speed and loops difficult sections on YouTube, Spotify, SoundCloud, Apple Music, Deezer, Vimeo, Tidal and local MP3 or MP4 files. Its official page lists ±12 semitones with fine-tuning and speed from 25% to 400%. Pitch, speed and loops are free on every song; the Studio tools (stem splitting, a Vocal Reducer, EQ and chord recognition) are free on 3 songs, then cost $4.99 a month, $34.99 a year or $149.99 once.

Choose it if: the song you practice is a YouTube video or a streaming track, and you practice at a computer.

Its limit: it’s an extension, not an app: its page lists Chrome and Edge and no phone version, so on a phone you need one of the apps below.

Music Speed Changer: best free option on Android

Music Speed Changer, from Single Minded Productions, is the most generous free option on Android. Its Google Play listing describes pitch shifting of up to 24 semitones up or down, in fractions of a semitone, and speed from 15% to 500%, plus A-B loops, markers, an 8-band EQ, a BPM and key analysis of each track and export to MP3, FLAC or WAV. It also lists a track splitter that separates or removes vocals, drums, bass and other instruments, on devices with at least 4 GB of RAM and 64-bit Android. The speed control is free and unrestricted; formant correction, which keeps a shifted voice sounding natural, is a paid feature. The app contains ads, and in-app purchases range from $0.99 to $9.99.

Choose it if: you’re on Android and want pitch, speed and export without paying.

Its limit: it’s Android only, and it works on audio files on your device, not on streaming links.

Anytune: best for practicing on iPhone with loops

Anytune is built for practice on iPhone and iPad. The free app adjusts the tempo without affecting the pitch (its listing claims high-quality audio down to 0.05×), adjusts the pitch “to your instrument” or into a different key, and lets you mark sections and record yourself; it plays songs from your Apple Music library or files you import. Paid packs add features one by one: Basic ($1.99) removes the ads, Pro ($4.99) adds count-ins, a loop trainer and transcribe mode, and Studio ($4.99) adds pitch shifts of up to 24 semitones and ReFrame audio isolation to solo or mute vocals and instruments. Export of tuned tracks is another $4.99.

Choose it if: you practice an instrument or a vocal line on iPhone and like to break a song into marked sections.

Its limit: it’s Apple only, and the features most singers want (bigger pitch shifts and isolation) live in the paid Studio Pack.

Amazing Slow Downer: best one-time purchase on every platform

Amazing Slow Downer, from Roni Music, has been around for years and runs everywhere: $14.99 on the iPhone App Store, $9.95 on Android and $39.95 for Mac or Windows. It changes the tuning or the key without changing the speed, plays from 25% to 200% of the original speed and sets seamless loops with two buttons. On iPhone it opens your music library, the Files app and the audio of video files. There’s a free Lite version; its Google Play listing says it plays only the first quarter of each file.

Choose it if: you’d rather pay once than subscribe, or you need the same tool on a phone and on a Windows computer.

Its limit: it doesn’t separate stems, so a song with a lead vocal stays a song with a lead vocal.

Capo: best for learning by ear with chord detection on Apple devices

Capo, from SuperMegaUltraGroovy, detects the chords, beats and key of a song, slows it down, transposes it to other keys and isolates instruments and even vocals. It runs on iPhone and iPad (iOS 17.6 or later), with a separate Mac version. The iPhone app is a free download, but without a subscription it doesn’t save your edits to chords, regions or markers; Capo touch Pro costs $4.99 a month or $19.99 a year.

Choose it if: you’re a guitarist or a singer-guitarist who wants the chords on screen while the song plays in your key.

Its limit: its listing says it works with music you own but can’t access streaming tracks from Apple Music, Spotify and similar services.

Transcribe!: best on a computer for working out parts

Transcribe!, from Seventh String Software, is the classic desktop tool for transcribing. It slows music down without changing its pitch, transposes and fine-tunes, stores any number of named loops, shows the strength of each pitch in a spectrum, guesses notes and chords and can show the video of video files. It runs on Windows, Mac and Linux, not on phones or tablets. A license costs $39 once, and you can try it free for 30 days.

Choose it if: you sit at a computer to work out a solo, a bass line or a vocal melody note by note.

Its limit: no phone version and no stem separation in its feature overview: it’s a transcription tool, not a backing-track maker.

BandLab Splitter: best free Moises alternative for stems

If what you need is the song without the vocal, BandLab’s Splitter is the free route. According to BandLab’s guide, the free version separates a track into 2 stems (vocals and the rest) or 4 (vocals, drums, bass and the rest), and lets you tweak the key and the speed and loop a region. A Pro or Max membership adds guitar, strings and piano stems and faster processing; on the US App Store, BandLab Pro costs $14.99 a month or $149.99 a year. It runs on Android, iPhone, iPad and in the browser.

Choose it if: you want stems at no cost and you don’t mind a full music-making app around them.

Its limit: Splitter is one tool inside a studio and social platform, so it takes more steps than a dedicated practice app.

Zoundroom: best for changing the key of your own recording and singing over it

When the recording is yours (a guitar demo of your song, a backing track a bandmate sent you, a rehearsal take saved with its lyric), Zoundroom changes its key inside the song’s own project and lets you sing over the new version right away. Open the recording from its ⋮ menu with «Edit audio» and the multitrack editor estimates the key and BPM (an estimate you can correct); tap the key chip, pick the target key and it transposes by the shortest way, or move «Pitch» up to 12 semitones either way at the same speed. «Speed» goes from 50% to 150% at the same pitch, «Loop» repeats the chorus while you try the new key, and the red «Record» button records your voice over the song while it plays, up to 8 tracks counting the original, with a metronome, a count-in of 1 or 2 bars and wired headphones. You save the result as a new version next to the original, which stays as it was, on iPhone, Android or at app.zoundroom.com. A concrete next step: import your demo, open it in the editor, drop it two semitones, record one pass of the chorus and write “Key: D (−2)” at the top of the song’s note.

Pro matters if you change keys often: Free includes 5 editing sessions in total (a session is used when you save or export, so opening the editor and leaving is free), while Pro and Band edit without counting sessions, with room for up to 10,000 items. Pro is 7 days free on iPhone and on the web.

Choose it if: the song is yours and the version in your key should live next to its lyric, chords and takes.

Its limit: for a commercial song or a streaming link, remove the vocal with Moises or BandLab Splitter first and import the result.

YouTube: speed only, no pitch

YouTube keeps the pitch when you change the playback speed: Settings, then Speed on a computer or Playback speed on a phone, from 0.25× to 2×, with a custom slider in 0.05 steps on the web. It has no pitch or key control. To change the key of a YouTube video, use the Transpose extension on a computer; to slow it down, the built-in speed is enough. The guide on how to slow down a song without changing the pitch covers YouTube’s speed and loop step by step.

Which app to choose

Your situation	Pick
A commercial song, sung in your key without the original vocal, on your phone	Moises
The same, but free	BandLab Splitter, or Moises’s free uploads
A YouTube video or a Spotify track, at a computer	Transpose
Android, free, pitch and speed with export	Music Speed Changer
iPhone, practice with loops and marks	Anytune
One payment, phone and Windows	Amazing Slow Downer
Chords on screen while you play, Apple devices	Capo
Note-by-note transcription on a computer	Transcribe!
Your own demo or backing track, then a vocal take over it	Zoundroom’s multitrack editor

Free on a computer you also have GarageBand on Apple devices (its Transpose slider moves audio regions up to 12 semitones) and Audacity on Windows, macOS and Linux (Effect, Pitch and Tempo, Change Pitch). And with nothing to install, this site’s free pitch and speed changer runs in the browser on your phone or computer: up to 12 semitones up or down, speed from 50 to 150% without touching the pitch, a loop and a WAV download, with no upload and no account. The guide on how to change the key of a song walks through both, plus transposing the chords and the capo.

Before you shift: how many semitones?

An app only moves the song; you still have to decide how far. Do it from the melody, not from the chords:

1. Measure your range with the free vocal range test, then trim a semitone or two from each end: that’s the zone you can sing take after take. The guide to voice types and vocal range explains the difference.
2. Find the song’s key with the song key and BPM finder, which analyzes an audio file in your browser, or with the methods in how to find the key of a song.
3. Let a tool do the counting. Enter your range and the melody’s lowest and highest notes in what key should I sing in and it lists the keys where the whole melody fits.

A worked example: your comfortable zone is C3 to A4, and the backing track you want to sing over is in E, with a verse that never drops below E3 and a chorus that peaks on B4. The top note is two semitones too high, so the target is D: the melody becomes D3 to A4 and fits. In Moises, Transpose, Music Speed Changer or Zoundroom you’d set −2 or pick D; the result is the same move. Keep it small: on a recording with a voice on it, one or two semitones usually sound natural, and beyond three or four the voice starts to sound processed. If you play the song yourself, the chord transposer gives you the chord sheet in D for the next take.

A 15-minute test with your own song

Install two candidates and give each the same session:

1. Load the same song. A file you have on the device, or the same YouTube link for Transpose.
2. Find its key. Note whether the app detects it and whether it matches your chord sheet.
3. Shift it two semitones down. Sing the chorus once. Listen for a thin or “underwater” sound on the voice.
4. Remove the vocal, if the app can. Sing the chorus again over the music alone.
5. Loop the hardest line at 80%. Check that the loop is seamless and the pitch stays where you put it.
6. Save or export it. Check that the shifted version is still there tomorrow and in the format you need.

The app that wins is the one where you spent the 15 minutes singing rather than looking for buttons. When you record yourself over the shifted version, the guide on recording vocals over a song on your phone covers headphones, distance and timing, and the multitrack apps for your phone comparison covers the next step if you want to build a full demo.

Frequently asked questions

What is the best free app to change the pitch of a song?

On Android, Music Speed Changer: pitch and speed are free, with ads. In a browser, Transpose is free for pitch, speed and loops. On iPhone, Anytune’s free app changes pitch and speed. If you also need the vocal removed, Moises’s free plan and BandLab Splitter both separate stems at no cost, within their limits.

Is there a free alternative to Moises?

For stems, BandLab Splitter separates 2 or 4 stems for free and lets you tweak key and speed. For pitch and speed without stems, Music Speed Changer on Android, Transpose in the browser and Anytune on iPhone are free to start. Moises itself has a free plan with a limited number of uploads each month.

Can I change the pitch of a YouTube video?

Not with YouTube itself: its settings change only the speed. On a computer, the Transpose extension for Chrome and Edge shifts the pitch of YouTube videos by up to 12 semitones either way.

Does changing the pitch change the speed of the song?

Not with a pitch shifter: all the apps in this list move the pitch while the tempo stays the same. The method that changes both together is varispeed, like a turntable running slower; Zoundroom’s editor and Music Speed Changer offer it as a separate option.

Can I change the key of my own recording and record my voice over it?

Yes. In Zoundroom’s multitrack editor you change the key of a recording in your project and record takes over the new version while it plays, with wired headphones, then save it as a new version. Remember that the shift moves everything in the file, so if your demo already has a vocal, that vocal moves too.

Sources

All pages checked on October 2, 2026.

• Moises: on the App Store (free plan features, key changer to 12 keys, speed changer, Premium $5.99/month or $39.99/year, Pro $29.99/month, iOS 17 and Apple silicon Macs), pricing page (free tier with a limited number of uploads each month; web, desktop, iPhone, iPad and Android) and the help center article How many songs can I upload? (5 songs a month, up to 5 minutes, on the free plan).
• Transpose: official site (Chrome and Edge, supported sites, ±12 semitones, 25–400% speed, free plan, $4.99/month, $34.99/year, $149.99 lifetime).
• Music Speed Changer: on Google Play (±24 semitones, 15–500%, BPM and key analysis, track splitter requirements, MP3/FLAC/WAV export, formant correction as a paid feature, ads, in-app purchases $0.99–$9.99; updated September 22, 2026).
• Anytune: on the App Store (free features, Basic, Pro, Studio, Import and Export packs with prices, 24 semitones and ReFrame audio isolation in the Studio Pack, iOS 16).
• Amazing Slow Downer: on the App Store ($14.99, 25–200%, key or tuning change, loops, sources), Roni Music price list ($39.95 Mac/Windows, $9.95 Android), Amazing Slow Downer for Android and Amazing Slow Downer Lite on Google Play.
• Capo: on the App Store (chord, beat and key detection, slow down, transpose, isolation, Pro $4.99/month or $19.99/year, iOS 17.6, no access to streaming tracks).
• Transcribe!: overview (features, Windows, Mac and Linux, 30-day evaluation) and buy page ($39, not for phones or tablets).
• BandLab: A guide to stem separation using Splitter (free 2 or 4 stems, key and speed, loop, paid stems) and on the App Store (Pro $14.99/month or $149.99/year).
• YouTube Help, Change video playback speed, and 9to5Google, YouTube on the web gets “Custom” playback speed controls (0.25× to 2×, 0.05 steps).
• Apple Support, Transpose audio regions in GarageBand on Mac (up to 12 semitones), and Audacity Manual, Change Pitch.
• Zoundroom: multitrack editor and plans and pricing.