Comparison

Jazzlore Scales vs Chord Progression Lab

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Jazzlore Scales

Features
Read full description

The scales every jazz musician should know, drawn and played. Most scale apps are exhaustive β€” every mode of every key, every exotic scale from every tradition, presented as a database to scroll through. Jazzlore Scales is the opposite: a focused reference for the scales that actually get played over jazz changes. Dorian, mixolydian, melodic minor, the bebop scales, the altered scale, the symmetric scales β€” the vocabulary you need at your fingertips when you're soloing or comping. - Which scale, which chord. Every scale shows the chord context where it lives. Look up the scale to find the chord; look up the chord to find the scale. - Audio for every scale. Hear it played cleanly, in a register that lets you sing it back. Internalize the sound, not just the spelling. - Staff notation. See the scale written out, not just named. Reading the intervals matters. - Clean, distraction-free interface. Large, legible, dark by default. Made to sit on top of the piano while you work. No accounts, no ads, no tracking, no analytics. Open the app, look up the scale, hear it, close the app, go practice. Part of the Jazzlore family of jazz reference apps. Free, open source, ad-free, made for musicians.

About

Chord Progression Lab

Features
Read full description

Chord Progression Lab turns music theory into a sandbox. Pick a key. Pick a style. Listen. Tweak. Export. That's the whole loop β€” and it's surprisingly addictive whether you're a songwriter looking for your next progression, a producer hunting for a starting MIDI, a music student studying voice leading, or just a curious listener who wants to know what a Phrygian dominant actually sounds like. 25+ music-theory approaches, from familiar to far-out: β€’ Pop, Doo-Wop, Pachelbel's Canon, Circle of Fifths β€’ 12-Bar Blues and Jazz β€’ Rock and Punk power-chord progressions β€’ Epic Minor and Andalusian cadences β€’ Indian Raga (Bhairav), Arabic Maqam (Hijaz), East Asian Gōng pentatonic β€’ Japanese Hirajōshi, Indonesian Gamelan (Slendro) β€’ Klezmer Freygish, Flamenco Phrygian, Celtic Mixolydian, Slavic minor β€’ Bulgarian 7/8 Balkan, West African Highlife β€’ Bossa Nova, Reggae, Hawaiian slack key β€’ Avant-Garde quartal stacks and tone clusters All 12 keys. Transpose any progression β€” instantly. Dissonance dial. Great for ear-training, jazz studies, or just hearing how a vanilla I–V–vi–IV mutates when you add tension. Tempo control. Drag from a slow 40 BPM crawl to a 200 BPM sprint. Each style starts at a tempo that fits the genre. See it as you hear it. A piano keyboard lights up with the active chord tones in real time, and the chord sequence scrolls along showing Roman numerals and the actual chord name in the current key. Export MIDI. One tap saves a standard MIDI file you can drop into any DAW β€” and the share sheet sends it anywhere: AirDrop, Files, email, Messages. No accounts. No ads. No tracking. No internet required. Everything runs on-device with a built-in synthesizer. Whether you're studying theory, writing a song, prototyping a beat, or just curious what a Bulgarian 7/8 progression sounds like β€” Chord Progression Lab gets you from idea to audio in two taps.

Screenshots

Jazzlore Scales4 screens
Chord Progression Lab2 screens

Verdict

The call

The clearest difference is price: Jazzlore Scales at Free against Chord Progression Lab's $0.99. Jazzlore Scales also leads on iOS requirement (16.0 vs 26.5). On ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Jazzlore Scales is free to download; Chord Progression Lab costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences Β· 3 level
Jazzlore Scales versus Chord Progression Lab: the parameters behind the verdict, then further details
ParameterJazzlore ScalesChord Progression Lab
PriceFree β€” better$0.99
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 β€” better26.5
Further details β€” not scored
Size8 MB2 MB
Age rating4+4+
DeveloperAurelien FontaineDavid Mickey

In-app purchases

None

Jazzlore Scales

No in-app purchases

None

Chord Progression Lab

No in-app purchases

Questions

Is Jazzlore Scales free?
Jazzlore Scales is free to download, with no in-app purchases.
Is Chord Progression Lab free?
Chord Progression Lab costs $0.99, with no in-app purchases.
Do Jazzlore Scales or Chord Progression Lab have ads?
Neither Jazzlore Scales nor Chord Progression Lab shows ads.

Other comparisons