Octaves vs Evil Otto
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Octaves
This audio plugin offers a unique spectral sound design experience by dividing the audio spectrum into octaves. It provides a retro-scientific approach to sound manipulation, reminiscent of classic avant-garde electronic music studios.
- Octave bandpass filtering
- Spectral sound design
- Retro-scientific audio approach
- Unique sound manipulation effects
- Collaboration with Hainbach
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Octaves is our latest collaboration with Berlin-based composer and YouTuber Hainbach. It is a filter plugin designed to take apart the audio spectrum in spreads of octaves, allowing for unique and enchanting spectral sound design effects. Octaves gives you a retro-scientific approach to sound that echoes the timeless productions created in the BBC Radiophonic workshop or the WDR Studio für Elektronische Musik by the Avantgarde masters, and modern places like Willem Twee, Strøm, and Hainbach’s own laboratory.
Evil Otto
This audio effect applies simultaneous upward and downward compression across three frequency bands for detailed sound. It offers precise control over audio dynamics and includes features like sidechain input and real-time metering.
- Three-band OTT compression
- Precise control parameters
- Sidechain input for rhythmic effects
- Real-time metering per band
- Factory and user presets
- Cross-platform preset compatibility
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Evil Otto is a multiband OTT (Over-The-Top) compressor that applies simultaneous upward and downward compression across three frequency bands. The result is dense, hyper-detailed audio where peaks are controlled and quiet details are pushed forward — a sound heard across modern electronic music, pop, and hip-hop production. Features -- Three-Band OTT Compression Evil Otto splits your signal into low, mid, and high frequency bands and applies independent upward and downward compression to each. Quiet details come up, peaks come down, and each band can be tuned separately. -- Precise Control Without Complexity Fifteen parameters give you everything you need and nothing you don't: Depth, Time, independent Down and Up amounts, per-band thresholds, per-band output levels, and input/output gain. -- Sidechain Input Route an external signal to duck the compressed output for rhythmic pumping effects. A dedicated Listen mode lets you monitor the sidechain signal to verify routing. -- Real-Time Metering Nine meters show input levels, gain reduction, and output levels per band. The center meters display both downward compression and upward expansion relative to the threshold, so you can see exactly what the compressor is doing. -- Factory Presets Includes a library of starting points across a range of applications. Save and recall your own presets with the built-in preset browser. -- Cross-Platform Compatible User presets created on iOS work on macOS, Windows, and Linux. Sessions created in GarageBand or Logic on iOS will open the desktop version on macOS.
Screenshots
Verdict
The clearest difference is review sentiment: Octaves at 100% against Evil Otto's 50%. Octaves also leads on rating (4.8 vs 4.5). Evil Otto's advantage is price ($4.99 vs $6.99) and iOS requirement (12.0 vs 14.0). On ratings volume, ads, in-app purchases and monetization model 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
Octaves costs $6.99 and Evil Otto $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Octaves holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews point the same way: 100% of Octaves's written reviews are positive against 50% of Evil Otto's.
| Parameter | Octaves | Evil Otto |
|---|---|---|
| Price | $6.99 | $4.99 — better |
| Rating | 4.8 (5 ratings) — better | 4.5 (4 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 5 — better | 4 |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 20 MB | 60 MB |
| Age rating | 4+ | 4+ |
| Developer | AudioThing Ltd. | Audio Damage, Inc. |
Customer experience
Octaves
Evil Otto
In-app purchases
Octaves
No in-app purchases
Evil Otto
No in-app purchases









