Comparison

Constellation88 vs Harmony

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

Head to head
About

Constellation88

Features
Read full description

DRAW YOUR OWN CONSTELLATIONS Touch the canvas to create stars and connect them into patterns. Match your creation with real astronomical constellations and learn about the night sky in an interactive way. EXPLORE 88 REAL CONSTELLATIONS Browse detailed information about every officially recognized constellation, from Orion to Ursa Major. Each entry includes: - Real astronomical data and star positions - Beautiful constellation illustrations - Visibility information and observation tips - Historical background and mythology TRACK THE MOON IN REAL TIME Stay connected to lunar cycles with: - Today's moon phase visualization - Precise moonrise and moonset times based on your location - Live Activity and Dynamic Island support - Smart notifications for moonrise and moonset events FEATURES - Interactive drawing canvas with constellation matching - Complete gallery of 88 constellations - Location-based astronomical calculations - Live Activities for at-a-glance moon tracking - Dynamic Island integration (iPhone 14 Pro and later) - Optimized for both iPhone and iPad - Clean, beautiful interface with no ads - Completely free PERFECT FOR Whether you're a stargazing enthusiast, astronomy student, or simply curious about the night sky, this app makes learning constellations engaging and accessible. No prior knowledge required. PRIVACY Your location is used only for accurate moonrise/moonset calculations and never leaves your device.

About

Harmony

This app helps you develop your musical ear and understanding of music theory through engaging exercises. It covers notes, intervals, scales, and chords, offering multiple training methods and input options. Practice offline with a distraction-free interface tailored to your skill level.

Highlights
  • Notes, intervals, scales, and chords training
  • Practice by sight, ear, or playing
  • Input via virtual piano, microphone, or MIDI
  • Customizable difficulty and concepts
  • Offline functionality
  • Multilingual support
Features
Read full description

Unlock the musician in you with Harmony. Whether you're a beginner or a seasoned player, Harmony trains you to recognize, read, and play music. Four domains, one method: theory becomes a game of focused exercises you tune to your level. The 4 domains โ€ข Notes โ€” spot and place every note. โ€ข Intervals โ€” measure the distance between two pitches. โ€ข Scales โ€” major, minor, modes, and more. โ€ข Chords โ€” from triads to extended chords, inversions included. Three ways to train โ€ข By sight โ€” read the note straight off the staff (treble or bass clef, key signatures, ledger lines). โ€ข By ear โ€” hear a note, interval, or chord, then identify it. โ€ข By playing โ€” play the target back on an interactive piano. Play your way โ€ข By touch, on the virtual keyboard. โ€ข By microphone, singing or with your instrument. โ€ข By MIDI, plugging in your keyboard (USB or Bluetooth). Track your progress โ€ข Short sessions โ€” choose how many questions, and get your precision at the end. โ€ข Clear statistics โ€” your mastery domain by domain, by question type, and by concept. โ€ข Your practice day streak, to keep the rhythm going. Why Harmony? โ€ข Tailored โ€” pick the concepts, question formats, and difficulty. โ€ข Easy to get into โ€” a guided tour shows you the essentials on first launch. โ€ข Distraction-free โ€” a clean interface built for focus. โ€ข On every screen โ€” phone and tablet alike. โ€ข Offline โ€” everything works without a connection. โ€ข Multilingual โ€” English, French, Spanish, and three note notations (Do-Re-Mi, C-D-E, German notation). Harmony is just getting started. We improve it every day to build the most complete training companion, from theory basics to a trained ear. Happy practicing!

Screenshots

Constellation884 screens
Harmony4 screens

Verdict

The call

The clearest difference is iOS requirement: Harmony at 15.1 against Constellation88's 18.0. On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference ยท 7 level
Constellation88 versus Harmony: the parameters behind the verdict, then further details
ParameterConstellation88Harmony
PriceFreeFree
Positive reviewsโ€”0.0% of reviews
Update frequencyโ€”Every 3 weeks
AdsNoNo
In-app purchasesNoNo
Monetizationโ€”Free
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS18.015.1 โ€” better
Further details โ€” not scored
Size10 MB54 MB
Age rating4+4+
DeveloperOne ChoiMelvin Warnet

In-app purchases

None

Constellation88

No in-app purchases

None

Harmony

No in-app purchases

Questions

Is Constellation88 free?
Constellation88 is free to download, with no in-app purchases.
Is Harmony free?
Harmony is free to download, with no in-app purchases.
Do Constellation88 or Harmony have ads?
Neither Constellation88 nor Harmony shows ads.

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