Comparison

Score Master vs Chord Progression Lab

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

Head to head
About

Score Master

This app is a professional PDF sheet music reader designed for musicians. It offers high-quality rendering, annotation tools, a built-in metronome, and seamless import options for sheet music. Manage your scores and setlists efficiently for practice and performance.

Highlights
  • High-quality PDF score viewer
  • Import photos and ZIP files
  • Annotation with Apple Pencil
  • Built-in metronome
  • Setlist management
  • Bluetooth page turner support
Features
Read full description

Score Master is a professional PDF sheet music reader built by musicians for real performance and practice workflows. 1. PDF Score Viewer - Clear, high-quality PDF rendering - Smooth navigation with pinch-to-zoom up to 5x - Two-page landscape view on iPad - Fade, slide, and scale page transitions 2. Photo Import - Import sheet music directly from your photo library - Automatically converts images to PDF - Combine multiple photos into one score or import them separately 3. ZIP Import - Import multiple PDFs from a single ZIP file - Automatically organize them and create a setlist 4. Pages Manager - Add, duplicate, remove, and drag to reorder pages - Multi-select pages with undo and redo support - Add templates or extract selected pages as a new score or PDF 5. Score Enhancement - Enhance photographed or scanned scores directly in Pages Manager - Preview paper cleanup, brightness, contrast, sharpness, black-and-white, and perspective adjustments in real time - Enhance one page or multiple pages, use automatic enhancement, or reset to the original 6. Half-Page Turn - Preview half of the next page for smoother page turns 7. Apple Pencil Annotation - Pen, highlighter, eraser, lasso, text, lines, shapes, and arrows - Adjustable tool widths displayed in points - Per-page auto-save with undo and redo 8. Metronome - Save tempo and time signature for each score - Supports 20โ€“300 BPM and customizable accent patterns - Change tempo during playback without restarting the beat 9. Chromatic Tuner - Real-time note, frequency, and cents detection - Adjustable A4 reference from 415โ€“466 Hz - Sharp and flat note-name options 10. Piano Roll - Scrollable 88-key piano keyboard - Tap or slide across keys to check pitches 11. Library & Setlists - Create setlists for performance or practice - Add songs, new scores, photos, and files directly to a setlist - Favorites and alphabetical navigation 12. Bluetooth Page Turners - Supports foot pedals and Bluetooth controllers - Works with arrow keys, Page Up/Down, spacebar, and volume buttons 13. Themes - Multiple color themes with White, Sepia, and Dark score backgrounds 14. Share Extension - Import scores directly from other apps through the share sheet Score Master๋Š” ๋ฎค์ง€์…˜์ด ์‹ค์ œ ์—ฐ์ฃผ์™€ ์—ฐ์Šต ํ™˜๊ฒฝ์— ๋งž์ถฐ ๋งŒ๋“  ์ „๋ฌธ PDF ์•…๋ณด ๋ฆฌ๋”์ž…๋‹ˆ๋‹ค. 1. PDF ์•…๋ณด ๋ทฐ์–ด - ์„ ๋ช…ํ•œ ๊ณ ํ’ˆ์งˆ PDF ๋ Œ๋”๋ง - ์ตœ๋Œ€ 5๋ฐฐ ํ•€์น˜ ์คŒ๊ณผ ๋ถ€๋“œ๋Ÿฌ์šด ํ™”๋ฉด ์ด๋™ - iPad ๊ฐ€๋กœ ๋ชจ๋“œ 2ํŽ˜์ด์ง€ ํŽผ์นจ ๋ณด๊ธฐ - ํŽ˜์ด๋“œ, ์Šฌ๋ผ์ด๋“œ, ์Šค์ผ€์ผ ํŽ˜์ด์ง€ ์ „ํ™˜ 2. ์‚ฌ์ง„ ๊ฐ€์ ธ์˜ค๊ธฐ - ์‚ฌ์ง„์ฒฉ์˜ ์•…๋ณด ์ด๋ฏธ์ง€๋ฅผ ๋ฐ”๋กœ ๊ฐ€์ ธ์™€ PDF๋กœ ์ž๋™ ๋ณ€ํ™˜ - ์—ฌ๋Ÿฌ ์‚ฌ์ง„์„ ํ•˜๋‚˜์˜ ์•…๋ณด๋กœ ํ•ฉ์น˜๊ฑฐ๋‚˜ ๊ฐœ๋ณ„ ์•…๋ณด๋กœ ๊ฐ€์ ธ์˜ค๊ธฐ 3. ZIP ์ผ๊ด„ ๊ฐ€์ ธ์˜ค๊ธฐ - ZIP ํŒŒ์ผ์˜ ์—ฌ๋Ÿฌ PDF๋ฅผ ํ•œ ๋ฒˆ์— ๊ฐ€์ ธ์˜ค๊ธฐ - ์•…๋ณด ์ž๋™ ์ •๋ฆฌ ๋ฐ ์…‹๋ฆฌ์ŠคํŠธ ์ƒ์„ฑ 4. ํŽ˜์ด์ง€ ๊ด€๋ฆฌ - ํŽ˜์ด์ง€ ์ถ”๊ฐ€, ๋ณต์ œ, ์ œ๊ฑฐ ๋ฐ ๋“œ๋ž˜๊ทธ ์ •๋ ฌ - ๋‹ค์ค‘ ์„ ํƒ๊ณผ ์‹คํ–‰ ์ทจ์†Œยท๋‹ค์‹œ ์‹คํ–‰ ์ง€์› - ํ…œํ”Œ๋ฆฟ ์ถ”๊ฐ€ ๋ฐ ์„ ํƒํ•œ ํŽ˜์ด์ง€๋ฅผ ์ƒˆ ์•…๋ณด๋‚˜ PDF๋กœ ์ถ”์ถœ 5. ์•…๋ณด ํŽ˜์ด์ง€ ๋ณด์ • - ํŽ˜์ด์ง€ ๊ด€๋ฆฌ์—์„œ ์‚ฌ์ง„ ๋ฐ ์Šค์บ” ์•…๋ณด๋ฅผ ๋ฐ”๋กœ ๋ณด์ • - ์ข…์ด ์ •๋ฆฌ, ๋ฐ๊ธฐ, ๋Œ€๋น„, ์„ ๋ช…๋„, ํ‘๋ฐฑ, ์›๊ทผ ๋ณด์ •์„ ์‹ค์‹œ๊ฐ„์œผ๋กœ ๋ฏธ๋ฆฌ๋ณด๊ธฐ - ๊ฐœ๋ณ„ยท์ผ๊ด„ยท์ž๋™ ๋ณด์ • ๋ฐ ์›๋ณธ ์ƒํƒœ๋กœ ์ดˆ๊ธฐํ™” ์ง€์› 6. ํ•˜ํ”„ ํŽ˜์ด์ง€ ํ„ด - ๋‹ค์Œ ํŽ˜์ด์ง€์˜ ์ ˆ๋ฐ˜์„ ๋ฏธ๋ฆฌ ํ™•์ธํ•ด ์ž์—ฐ์Šค๋Ÿฝ๊ฒŒ ํŽ˜์ด์ง€ ์ „ํ™˜ 7. Apple Pencil ํ•„๊ธฐ - ํŽœ, ํ˜•๊ด‘ํŽœ, ์ง€์šฐ๊ฐœ, ์˜ฌ๊ฐ€๋ฏธ, ํ…์ŠคํŠธ, ์„ , ๋„ํ˜•, ํ™”์‚ดํ‘œ ์ง€์› - ํ•„๊ธฐ๋„๊ตฌ ๊ตต๊ธฐ๋ฅผ pt ๋‹จ์œ„๋กœ ํ™•์ธํ•˜๊ณ  ์กฐ์ ˆ - ํŽ˜์ด์ง€๋ณ„ ์ž๋™ ์ €์žฅ๊ณผ ์‹คํ–‰ ์ทจ์†Œยท๋‹ค์‹œ ์‹คํ–‰ 8. ๋ฉ”ํŠธ๋กœ๋†ˆ - ๊ณก๋ณ„ ํ…œํฌ์™€ ๋ฐ•์ž ์ €์žฅ - 20โ€“300 BPM ๋ฐ ๋น„ํŠธ๋ณ„ ์•…์„ผํŠธ ์„ค์ • - ์žฌ์ƒ์„ ๋ฉˆ์ถ”์ง€ ์•Š๊ณ  ํ…œํฌ ๋ณ€๊ฒฝ 9. ํฌ๋กœ๋งคํ‹ฑ ํŠœ๋„ˆ - ์Œ์ •, ์ฃผํŒŒ์ˆ˜ ๋ฐ ์„ผํŠธ ํŽธ์ฐจ๋ฅผ ์‹ค์‹œ๊ฐ„์œผ๋กœ ๊ฐ์ง€ - A4 ๊ธฐ์ค€์Œ 415โ€“466Hz ์กฐ์ ˆ - ์ƒต๊ณผ ํ”Œ๋žซ ์Œ์ด๋ฆ„ ํ‘œ๊ธฐ ์„ ํƒ 10. ํ”ผ์•„๋…ธ ๋กค - ์Šคํฌ๋กค ๊ฐ€๋Šฅํ•œ 88๊ฑด๋ฐ˜ ํ”ผ์•„๋…ธ - ๊ฑด๋ฐ˜์„ ํƒญํ•˜๊ฑฐ๋‚˜ ํ›‘์–ด ์Œ์ • ํ™•์ธ 11. ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ & ์…‹๋ฆฌ์ŠคํŠธ - ๊ณต์—ฐ ๋ฐ ์—ฐ์Šต์šฉ ์…‹๋ฆฌ์ŠคํŠธ ๊ตฌ์„ฑ - ๊ธฐ์กด ๋…ธ๋ž˜, ์ƒˆ ์•…๋ณด, ์‚ฌ์ง„ ๋ฐ ํŒŒ์ผ์„ ์…‹๋ฆฌ์ŠคํŠธ์— ๋ฐ”๋กœ ์ถ”๊ฐ€ - ์ฆ๊ฒจ์ฐพ๊ธฐ์™€ ์•ŒํŒŒ๋ฒณ ์ธ๋ฑ์Šค ์ง€์› 12. ๋ธ”๋ฃจํˆฌ์Šค ํŽ˜์ด์ง€ ํ„ฐ๋„ˆ - ํ’‹ ํŽ˜๋‹ฌ ๋ฐ ๋ธ”๋ฃจํˆฌ์Šค ์ปจํŠธ๋กค๋Ÿฌ ์ง€์› - ํ™”์‚ดํ‘œ, Page Up/Down, ์ŠคํŽ˜์ด์Šค๋ฐ”, ๋ณผ๋ฅจ ๋ฒ„ํŠผ ํ˜ธํ™˜ 13. ํ…Œ๋งˆ - ๋‹ค์–‘ํ•œ ์ปฌ๋Ÿฌ ํ…Œ๋งˆ์™€ ํ™”์ดํŠธ, ์„ธํ”ผ์•„, ๋‹คํฌ ์•…๋ณด ๋ฐฐ๊ฒฝ 14. ๊ณต์œ  ํ™•์žฅ - ๋‹ค๋ฅธ ์•ฑ์˜ ๊ณต์œ  ๋ฒ„ํŠผ์„ ํ†ตํ•ด ์•…๋ณด๋ฅผ ๋ฐ”๋กœ ๊ฐ€์ ธ์˜ค๊ธฐ

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 โ€” 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: โ€ข Pop, Doo-Wop, Pachelbel's Canon, Circle of Fifths โ€ข 12-Bar Blues and Jazz โ€ข Rock and Punk power-chord progressions โ€ข Epic Minor and Andalusian cadences โ€ข Indian Raga (Bhairav), Arabic Maqam (Hijaz), East Asian Gลng pentatonic โ€ข Japanese Hirajลshi, Indonesian Gamelan (Slendro) โ€ข Klezmer Freygish, Flamenco Phrygian, Celtic Mixolydian, Slavic minor โ€ข Bulgarian 7/8 Balkan, West African Highlife โ€ข Bossa Nova, Reggae, Hawaiian slack key โ€ข Avant-Garde quartal stacks and tone clusters All 12 keys. Transpose any progression โ€” instantly. Dissonance dial. Great for ear-training, jazz studies, or just hearing how a vanilla Iโ€“Vโ€“viโ€“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 โ€” 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 โ€” Chord Progression Lab gets you from idea to audio in two taps.

Screenshots

Score Master4 screens
Chord Progression Lab2 screens

Verdict

The call

The clearest difference is price: Chord Progression Lab at $0.99 against Score Master's $9.99. Score Master's advantage is iOS requirement (17.5 vs 26.5). On ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Score Master costs $9.99 and Chord Progression Lab $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences ยท 6 level
Score Master versus Chord Progression Lab: the parameters behind the verdict, then further details
ParameterScore MasterChord Progression Lab
Price$9.99$0.99 โ€” better
Positive reviews100.0% of reviewsโ€”
Update frequencyFortnightlyโ€”
AdsNoNo
In-app purchasesNoNo
MonetizationPaidโ€”
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.5 โ€” better26.5
Further details โ€” not scored
Size15 MB2 MB
Age rating4+4+
DeveloperSanghyun ParkDavid Mickey

In-app purchases

None

Score Master

No in-app purchases

None

Chord Progression Lab

No in-app purchases

Questions

Is Score Master free?
Score Master costs $9.99, with no in-app purchases.
Is Chord Progression Lab free?
Chord Progression Lab costs $0.99, with no in-app purchases.
Do Score Master or Chord Progression Lab have ads?
Neither Score Master nor Chord Progression Lab shows ads.

Other comparisons