Combustor vs Epic Ear
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Combustor
This audio effect extension transforms tracks with a unique time-bending resonator. Create vibrant textures, subtle resonances, and dynamic sweeps. It's designed for electronic musicians and producers seeking to add wild or organic qualities to their sounds.
- Time bending resonator effect
- Creates distorted textures and physical resonance
- Envelope follower for dynamic control
- MIDI input for melodic control
- Performative interface
- AUv3 compatible
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*** Note: Combustor is an Audio Unit effect extension and requires an AUv3 compatible host app, like Logic Pro, Drambo or GarageBand. It does not run as a standalone app *** Combustor is a unique, wild resonating body fashioned to spice up or extremely transform your tracks. At the heart of Combustor is a custom time bending resonator that doesn't sound like anything you have heard before. You can create anything from vibrant, distorted texture, perfectly suited for "hardcore" electronic musicians, to subtle physical resonance, which is often lacking in synthesized sounds. Combustor contains an envelope follower, to create dynamic-controlled pitch or filter sweeps. It also has MIDI input, that controls resonator's pitch, to make something melodic and organic out of non-melodic sounds, like drums. With just a few knob turns, a boring sound can be turned into screaming madness that sounds like it went out of control. A simple and straightforward interface makes Combustor a performative tool that allows you to directly interact with your sound.
Epic Ear
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Epic Ear connects listening, notation, and the piano keyboard in one music-learning experience. Go beyond repeating sounds. See what you heard on the staff, find it on the keyboard, and build musical understanding with your ears, eyes, and hands. Start even if you are new to music Learn the staff, clefs, note names, rhythm, intervals, chords, progressions, and scales step by step. Guided scenes combine clear explanations with listening and hands-on interaction. Learn → Practice → Challenge • Learn: understand each concept through visual, interactive lessons. • Practice: repeat complete listening loops with reference sounds, piano, metronome, and spoken guidance. • Challenge: answer by ear, reveal the notation and keyboard, then play the answer yourself. Intervals, chords, progressions, and scales Four official curricula take you from foundations to advanced material. During training, notes on the staff and keys on the keyboard animate with the actual sound. Pause to inspect, replay the current loop, or move through the timeline. Build training around your goals Choose musical materials and playing styles to create custom training loops. Organize them in folders, add the loops you need to playlists, and keep listening across the app. See your progress Track challenge attempts, all-time and recent accuracy, mastery, challenge activity days, and challenge streaks. Long-term milestones unlock playful collectible trophies and animated celebrations. Explore freely in Playground Play the keyboard and explore the relationships between sound, notation, intervals, and chords at your own pace. Included for free • The complete Fundamentals course • Interval Chapters 1–4 • Chord Chapters 1–3 • Progression Chapters 1–3 • Scale Chapters 1–3 • Playground • Two custom training loops Epic Ear Pro unlocks the remaining official curriculum and unlimited custom loop creation and playback. If Pro ends, additional loops are never deleted; they remain safely stored in an inactive state. More features • Adjustable tempo, master volume, and per-track sound balance • Background playback with Lock Screen and Control Center controls • English, Korean, and Japanese • VoiceOver keyboard navigation and Dynamic Type support • No separate account required Privacy Policy: https://drfranken.net/apps/EpicEar/privacyPolicy_en.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: Epic Ear at Free against Combustor's $4.99. Epic Ear also leads on update cadence (fortnightly vs every 2 months). Combustor's advantage is in-app purchases (none vs 3) and chart position (#183 vs unranked). On ads 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
Epic Ear is free to download; Combustor costs $4.99 up front. Epic Ear sells 3 in-app purchases, starting at $1.99 per month. Combustor asks for nothing beyond the download.
Combustor ships an update every 2 months, Epic Ear fortnightly. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.
| Parameter | Combustor | Epic Ear |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.7 (19 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Best chart rank | #183 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 4 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | BeepStreet | DONGWOOK LEE |
In-app purchases
Combustor
No in-app purchases
Epic Ear
- Epic Ear Pro Monthly$1.991 Month
- Epic Ear Pro Yearly$9.991 Year
- Epic Ear Pro Lifetime$29.99









