UltimateScale vs JamJar
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
UltimateScale
Read full descriptionHide full description
UtimateScale is a music scale learning assistant. Are you confused and tired of difficult terms and complex scale structures such as Mixolydian and Locrian? With UltimateScale, you can learn by looking at a composition in staff score, directly touching a synth keyboard key on the app, listening by ear, and moving freely in key. In addition, you can learn the scale efficiently through a quiz using the Leitner System, which is famous for learning by memorization. In addition, you can upload and share comments of various scales and your own learning know-how through the Internet Archive. - Learn the scale by looking at the sheet music and listening to the sound. - The built-in touch synth keyboard allows you to learn while directly pressing the keys. - This app does not support only C key. You can transpose from C to B and see how it performs in different situations. - You can adjust the speed and octave during playback, and you can set the playback instrument as you like. - In the quiz menu, learn various scales by solving problems and using flashcards. - For quiz questions, effective learning is possible using the famous Leitner system as a memorization method. - You can share and download new scales that have not yet been discovered through the Internet Archive, scales with comments containing your own learning know-how, etc. This app is also - Support dark mode. - Compatible with both iPad and iPhone devices. - Press scales using a hardware MIDI keyboard connected via Bluetooth or USB. - MIDI keyboard is also supported in quiz mode.
JamJar
Read full descriptionHide full description
JamJar keeps your whole song collection in one place: sheet music, chord charts and lyrics, organized, searchable and synced across iPhone, iPad and Mac through your own iCloud. As a hobby musician, my music was scattered everywhere: PDF books, tunes from public-domain archives, photos of pages off my shelf and several music apps. Finding a song again was harder than playing it, so I built JamJar to be one shelf for all of it. NEW: TURN A SCAN INTO SHEET MUSIC YOU CAN EDIT ⢠Convert to Sheet Music (ABC) reads a printed page, scan or PDF and writes it out as a new song you can edit, transpose and play back ⢠Bars it isn't sure of are flagged for you to check against the original, which stays untouched beside it ⢠Runs on your device, offline, after a one-time download of about 1.6 GB ⢠Works best on printed single-staff music such as lead sheets, fake books and tunebooks. Handwritten pages are unreliable, and lyrics aren't read ⢠Needs a device with plenty of memory. On others the command is hidden and the rest of JamJar works as usual NEW: WRITE MUSIC ON THE SCORE ⢠Tap a note to change its length, accidental or pitch, or drag it up and down the staff ⢠Enter notes from an on-screen piano, or type them on a keyboard without writing any ABC ⢠Add chord symbols, ties, triplets and other tuplets, repeats and endings, D.C. and D.S. marks, articulations and dynamics ⢠Hear every note as you enter it ⢠Full bars close themselves, and bars that don't add up are flagged ⢠The score and its ABC source stay in step, so you can edit whichever is quicker BRING YOUR OWN MUSIC ⢠Import single songs or whole books as PDFs and images ⢠Scan paper books with the camera on iPhone or iPad ⢠Split a scanned book into separate songs automatically, titled for you ⢠Search open tune archives, or describe the tune you're after in your own words ⢠Open files from the apps you already use: ChordPro, ABC, OnSong, OpenSong, iReal Pro and MusicXML PRACTICE WITH A BACKING BAND ⢠Hear ABC, MusicXML and iReal Pro charts played with melody, chords, bass and drums, in a groove that suits the tune ⢠Fade each part on the mixer, or pull one out and play it yourself ⢠Loop a tricky passage, with a metronome and count-in ON STAGE WITH PERFORMANCE MODE ⢠One chart, full screen, with the screen kept awake ⢠Turn to the next song with a swipe, the keyboard or a Bluetooth page-turn pedal ⢠Editing is locked, so nothing changes by accident mid-set ⢠Build set lists and share them with your bandmates CREATE, EDIT AND ORGANIZE ⢠Write songs as lyrics and chords (ChordPro), sheet music (ABC) or chord charts ⢠Transpose to any key ⢠Draw and highlight on your sheet music ⢠Tag, search and filter your library ⢠Ask about a song in plain language, or ask for changes such as tidying the chords, powered by Apple Intelligence ⢠Automate with Siri and Shortcuts ⢠Private sync through your own iCloud: no account, no sign-up JamJar speaks English and Swedish, with more languages on the way. Whether you're rehearsing, teaching or on stage, JamJar keeps every song ready to play.
Screenshots
Verdict
The clearest difference is in-app purchases: JamJar at none against UltimateScale's 1. JamJar also leads on ads (none vs shown) and update cadence (every 4 weeks vs every 5 months). UltimateScale's advantage is iOS requirement (14.0 vs 27.0). On price and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. UltimateScale sells 1 one-off in-app purchase. JamJar asks for nothing beyond the download.
UltimateScale ships an update every 5 months, JamJar every 4 weeks. The most recent releases landed on November 7, 2026 and November 13, 2026 respectively.
| Parameter | UltimateScale | JamJar |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 4 weeks ā better |
| Ads | Yes | No ā better |
| In-app purchases | Yes | No ā better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 14.0 ā better | 27.0 |
| Further details ā not scored | ||
| Size | 60 MB | 89 MB |
| Age rating | 4+ | 4+ |
| Developer | Bum Tae Yoon | Norrkross Software |
In-app purchases
UltimateScale
- 1: Remove all ads$4.99
JamJar
No in-app purchases









