Comparison

Harmonic Explorer vs Ear Training L3

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

Head to head
About

Harmonic Explorer

Features
Read full description

Harmonic Explorer is a unique musical instrument built for sonic discovery. Tap into a grid of harmonic tones, pan across four octaves, and sculpt sound with layered controls that invite both casual play and deep experimentation. From soft, violin-like purity to rich metallic textures and spatial choruses, Harmonic Explorer offers a wide expressive range. Adjust harmonic gains, spread tones into lush chords, or reduce everything down to a single precise frequency. Key Features: - Intuitive multi-touch interface with four full octaves - Portrait and Landscape mode fully supported - Harmonic tone generation with per-voice amplitude control - Dynamic chord spread control — from single tones to shimmering triads - Built-in reverb with selectable acoustic spaces (from Room to Cathedral) - Randomize and Reset for playful experimentation or clean slates - Route Picker to send audio directly to Bluetooth or external devices - Designed for real-time performance and sound exploration - Fully offline — no ads, no tracking, no accounts, no interruptions Whether you're a composer looking for new inspiration, a student learning sound design, or just curious about the nature of harmonic structure, Harmonic Explorer offers a fresh way to hear and shape music. Sculpt tones. Discover timbres. Explore harmonics.

About

Ear Training L3

Explore and internalize chords and progressions with this interactive ear training app. Hear diatonic chords and custom progressions against a vocal drone, and test your knowledge with challenging modes. Works offline with adjustable settings.

Highlights
  • Interactive moons diagram for chords
  • Chord progression designer
  • Two test modes (Chords & Progressions)
  • 12 tonal centers and 5 modes
  • Adjustable drone/chord mix balance
  • Works offline
Features
Read full description

The Moons is a drone-based ear training app for exploring and internalizing chords and chord progressions. It presents the seven diatonic chords as an interactive moons diagram where you can tap individual chords in a key and hear them against a sustained vocal drone. To see how your ear training is coming along, the app includes a fun and challenging test mode. Features: 12 tonal centers (all keys) 7 modes: Major, Mixolydian, Lydian, Natural Minor, Harmonic Minor, Dorian, Phrygian 7 diatonic chords with roles displayed visually Fun and challenging test mode MIDI Visualizer - see what you play displayed Male and female choirs Real Acoustic Cello Adjustable drone/chord mix balance Function and note name label modes Works offline — no internet required How it works: Chords Mode: Start the drone, then tap spheres of the moons to hear chords. Use the arrow selector to shift to the closest inversion either up or down. In male choir mode, the radio buttons above sound melody tones. In female choir mode, the same buttons trigger a bass tone below. Chords Test Mode: Start drone, choose levels, then begin. Listen to the chord played, click the corresponding moon to select, then press the checkmark to commit. Once you’ve committed, or when the timer runs out, you’ll receive feedback as to the accuracy of your selection. 3 levels in Chord Test Mode: 1) Root position chords 2) 1st Inversions 3) 2nd inversions (test individually or in combination) Progressions Mode: Start the drone. Select a chord then press “Add” to add it to the progression. Repeat up to four times. Press play to hear the progression. The slider below the progression speeds up or slows down the tempo. Activate “Loop” to loop the progression. Chord Progressions Test Mode: Start drone, choose levels, then begin. Listen to the chord progression played, click a series of 3 corresponding moons, first selecting then commiting each of the chords. Once you’ve commited, or when the timer runs out, you’ll receive feedback as to the accuracy of your selections. 4 levels in Chord Progression Mode: 1) Simple Cadences 2) Deceptive Cadences 3) Unresolved Progressions Level 3 of Ear Training in The Mandala L1 - The Fan & The Curtain (simple intervals) L2 - The Tower (intervals, chords, and connections) L3 - The Moons (chords and chord progressions)

Screenshots

Harmonic Explorer4 screens
Ear Training L34 screens

Verdict

The call

The clearest difference is price: Harmonic Explorer at $0.99 against Ear Training L3's $7.99. Harmonic Explorer also leads on iOS requirement (15.6 vs 17.0). Ear Training L3's advantage is update cadence (every 5 days vs every 7 months). On ads, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Harmonic Explorer costs $0.99 and Ear Training L3 $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Harmonic Explorer ships an update every 7 months, Ear Training L3 every 5 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Harmonic Explorer versus Ear Training L3: the parameters behind the verdict, then further details
ParameterHarmonic ExplorerEar Training L3
Price$0.99 — better$7.99
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyEvery 7 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.0
Further details — not scored
Size2 MB32 MB
Age rating4+4+
DeveloperPhilippe ZayPaul Russell

In-app purchases

None

Harmonic Explorer

No in-app purchases

None

Ear Training L3

No in-app purchases

Questions

Is Harmonic Explorer free?
Harmonic Explorer costs $0.99, with no in-app purchases.
Is Ear Training L3 free?
Ear Training L3 costs $7.99, with no in-app purchases.
Do Harmonic Explorer or Ear Training L3 have ads?
Neither Harmonic Explorer nor Ear Training L3 shows ads.
Which is updated more often, Harmonic Explorer or Ear Training L3?
Harmonic Explorer ships an update every 7 months, and Ear Training L3 every 5 days. Most recently, Harmonic Explorer was updated on October 30, 2026 and Ear Training L3 on October 31, 2026.

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