MTI RehearScore vs The Score Stack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MTI RehearScore
This app provides a virtual accompanist for music learning and rehearsals. It allows users to isolate vocal parts, change tempo, transpose keys, and edit songs for practice. Access musical theater tracks and conduct rehearsals without a live pianist.
- Virtual accompanist for rehearsals
- Isolate and adjust vocal parts
- Change tempo and loop sections
- Transpose songs to different keys
- Edit songs with cuts and vamps
- Save and distribute customized arrangements
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Learn your music and run rehearsals right from your mobile device using the new RehearScore App! Sometimes, finding a rehearsal pianist that meets your budgeting and scheduling needs can be challenging. The new RehearScore® is a complete digital rendition of the Piano-Conductor Score, sequenced by a top Broadway accompanist, precisely the way the composer intended. Every musical number (including scene changes, dance music, and underscoring) is recorded in its entirety so you can rehearse even if you don’t have a pianist. ● Every cast member can have access to RehearScore® ○ Simply download the App right from the App Store to access your show! ● Conduct dance or choral rehearsals. ○ With the ability to change the tempo and loop a dance break, you can run multiple rehearsals at once without the need of a separate pianist or recording. ● Find the right key – transpositions are easy. ○ Adjust your songs into the key that best suits your performer. ● Isolate, increase, or remove any particular vocal line. ○ Because each singer’s part has been recorded on a separate track, it can be played back with or without accompaniment (or louder or softer, relative to the accompaniment). ● Click and jump to any measure. ○ Measure numbers match each individual score. ● Add cuts and vamps. ○ Edit the songs down to the specific cutting you need and find the perfect number of vamps you’ll need in each song. ● Save your changes. ○ After adjusting the songs, save your changes to distribute to your cast and crew. For more information on Music Theatre International and RehearScore, please visit https://www.mtishows.com/marketplace/resource/pre-performance/rehearscore.
The Score Stack
This app centralizes sheet music, practice tracks, rehearsal schedules, and group chat for vocal ensembles. Singers can access music offline, customize practice with MIDI tracks, and directors can manage markings and playlists. It also includes features for event RSVPs, attendance, and audience engagement.
- Sheet music and practice tracks
- Customizable MIDI practice tracks
- Learning playlists
- Director's markings
- Rehearsal calendar and RSVPs
- Group and section messaging
- Setlists and live program pages
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Everything your chorus needs, in one app. Sheet music, practice tracks, the rehearsal calendar and the group chat, together on every singer's phone, with music that still opens when the rehearsal room has no signal. MUSIC AND PRACTICE TRACKS Scores and learning tracks in the same place, listed Soprano to Bass, so a singer can read and listen without switching apps. Turn on Offline Music and a group's songs download to your phone. MIDI TRACKS THAT FOLLOW THE SCORE Make your part louder, hear it alone, or leave it out and sing against everyone else, at any speed. The music turns its own pages and keeps the current bar on screen, and you can loop a tricky passage with a bar's run-up. Directors can upload MusicXML scores and the app lines the bars up with the PDF. LEARNING PLAYLISTS Put the songs you are learning, from all your groups, into one queue. Choose the tracks you sing with for each song and mark it ready when you know it. Directors can share a playlist with the whole group and see how ready each section is, song by song. DIRECTOR'S MARKINGS Mark up a score once and push it to the whole section. Everyone rehearses from the same breath marks and cuts. CALENDAR, RSVPS AND ATTENDANCE Rehearsals and performances with RSVPs and attendance check-in, plus a feed your singers can subscribe to in their own calendar app. MESSAGING THAT STAYS Group and section conversations with replies, threads and reactions that do not scroll away, and announcements that reach everyone. SETLISTS AND SHOWTIME Build the setlist for a concert and sing straight through it. Publish a live program page, put its QR code on the printed program, and the audience follows along. FOR BARBERSHOP CHAPTERS A built-in tag library with all four parts recorded, alongside your chapter's sheet music, section tracks and rehearsal schedule. GET YOUR SINGERS IN QUICKLY Share one QR code at rehearsal and the room joins at once, or read out the short join code for anyone who has to install the app first. WHO IT IS FOR Barbershop choruses and quartets, community choirs, church and worship teams, school and college choirs, and small ensembles of every kind. Free for groups of 8 or fewer. No card required.
Screenshots
Verdict
The clearest difference is review sentiment: The Score Stack at 100% against MTI RehearScore's 30%. The Score Stack also leads on rating (5.0 vs 2.8) and update cadence (every 10 days vs every 6 weeks). MTI RehearScore's advantage is ratings volume (198 vs 15). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
The Score Stack holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: MTI RehearScore has 198 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 30% of MTI RehearScore's written reviews are positive against 100% of The Score Stack's.
MTI RehearScore ships an update every 6 weeks, The Score Stack every 10 days. The most recent releases landed on November 10, 2026 and November 4, 2026 respectively.
| Parameter | MTI RehearScore | The Score Stack |
|---|---|---|
| Price | Free | Free |
| Rating | 2.8 (198 ratings) | 5.0 (15 ratings) — better |
| Positive reviews | 30.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 198 — better | 15 |
| Update frequency | Every 6 weeks | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 14 MB | 68 MB |
| Age rating | 4+ | 4+ |
| Developer | Music Theatre International | The Stack Technologies LLC |
Customer experience
MTI RehearScore
The Score Stack
Bugs and requests
MTI RehearScore
Reported bugs
14 issues- Audio doesn't work on specific iOS versions (iOS 15.4, iOS 16, iPhone 7)
- Sound fails intermittently despite correct volume settings
- App crashes and closes unexpectedly
- Music disappears mid-playback requiring restart
- Practice loop skips random measures
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- Vocal parts not clearly labeled or inconsistently named
- Rhythm timing sounds off and clunky
- App stops playing when notifications arrive
- Device sleep/screen lock stops playback
- Inconsistent performance between iPhone and iPad
- Login credentials don't work after app reinstall
- Missing vocal parts for certain musicals
- Audio output inconsistency across devices
- Vamp sections have synchronization issues
Requested features
15 requests- Display full lyrics on screen (karaoke-style)
- Allow background audio playback while using other apps
- Prevent device from sleeping during playback
- Add diverse MIDI instrument options for vocal parts
- Support for landscape mode and iPad multitasking
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- Measure-by-measure forward/backward navigation buttons
- Save default track mix settings per show
- Auto-advance feature for vamps
- Website/desktop version for broader device compatibility
- Better documentation of ringer requirement
- Ability to edit/cut measures for modified arrangements
- Different instruments for singers vs accompaniment
- Improved drag bar sensitivity for seeking
- Keep phone awake during playback
- Account creation prompts for new users
The Score Stack
Not enough reviews yet to summarise bugs or requests.
In-app purchases
MTI RehearScore
No in-app purchases
The Score Stack
No in-app purchases
Questions
Is MTI RehearScore free?
Is The Score Stack free?
Which has better reviews, MTI RehearScore or The Score Stack?
Do MTI RehearScore or The Score Stack have ads?
Which is updated more often, MTI RehearScore or The Score Stack?
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