Thesys vs Harmonizer audio effect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Thesys
This app is a powerful and intuitive MIDI step sequencer for creating complex musical patterns. It offers extensive control over MIDI devices, enabling organic bass lines, leads, and pads for studio or live performance. Advanced features allow for real-time pattern manipulation directly from a MIDI keyboard.
- MIDI Step Sequencer
- Pattern Creation
- Live Performance Options
- Real-time Pattern Manipulation
- Integrated Synth
- Action Section (Gatetime, Looper, Slowdown)
- Ableton Link Support
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Thesys is an extremely powerful and intuitive MIDI Step Sequencer app, giving you control over just about all aspects of your favorite MIDI devices. Use Thesys to create varied and organic bass lines, screaming leads, pulsating chords, and organic pad sounds in the studio or on stage. For live musicians, Thesys provides an extremely versatile palette of performance options which can be triggered right from your MIDI keyboard: you can transpose, manipulate, twist up, mutate, and mangle your patterns without even getting near your iPad. No other MIDI sequencer plugin offers you the ease and power of Thesys. It is 100% MIDI compliant and therefore provides the ultimate MIDI sequencing solution. iPad Edition Features: • Integrated Synth • Action Section (Gatetime, Looper, Slowdown...) • Pattern Sequencer • Standalone & Audio Unit v3 • Ableton Link Support • MIDI file Export • MIDI Support (Virtual, Netzwerk, Extern, Bluetooth), MIDI Learn & Host Automation • MIDI Clock Sync (Master & Slave) • Preset iCloud Sync • Preset Share • Zoom
Harmonizer audio effect
This real-time audio effect app shifts pitch and adds harmonies to your original sound. It functions as an Audio Unit plugin or a standalone effect using your device's microphone or external audio interfaces. The pitch shifting preserves the original timing and tempo.
- Real-time pitch shifting
- Two harmony voices
- Smooth pitch shift controls
- Adjustable voice volumes
- Master reverb effect
- Standalone mode via microphone
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Harmonizer is real time audio pitch shifter effect that can mix harmonies into the original signal or run as realtime pitch shifter. The app works as an Audio Unit plugin and can also be used as stand alone real time effect via the device microphone or using iRig or similar device. The pitch shifting does NOT affect timing so the tempo stays the same. Features: - 2 harmony voices - smooth pitch shift controls - half tones and cents - dry volume (original voice) - efx 1 volume (pitch shifted voice 1 volume) - efx 2 volume (pitch shifted voice 2 volume) - reverb (master reverb) - EFX on/off button (in stand alone mode) If you play acoustic instrument you can use headphones without a mic and put the phone close to your instrument so the app will work as realtime effect. Now you can play and sing with harmonies.
Screenshots
Verdict
The clearest difference is price: Thesys at Free against Harmonizer audio effect's $1.99. Thesys also leads on rating (4.7 vs 3.0) and review sentiment (59% vs 23%). Harmonizer audio effect's advantage is in-app purchases (none vs 1) and device support (3 vs 1). 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
Thesys is free to download; Harmonizer audio effect costs $1.99 up front. Thesys sells 1 one-off in-app purchase. Harmonizer audio effect asks for nothing beyond the download.
Thesys holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Thesys has 85 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 59% of Thesys's written reviews are positive against 23% of Harmonizer audio effect's.
Thesys ships an update every 3 months, Harmonizer audio effect every 8 months. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.
| Parameter | Thesys | Harmonizer audio effect |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.7 (85 ratings) — better | 3.0 (9 ratings) |
| Positive reviews | 59.3% of reviews — better | 23.1% of reviews |
| Number of ratings | 85 — better | 9 |
| Update frequency | Every 3 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 10.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Sugar Bytes GmbH | Aleksandar Mlazev |
Customer experience
Thesys
Harmonizer audio effect
In-app purchases
Thesys
- Thesys Full Version$19.99
Harmonizer audio effect
No in-app purchases
Questions
Is Thesys free?
Is Harmonizer audio effect free?
Which has better reviews, Thesys or Harmonizer audio effect?
Do Thesys or Harmonizer audio effect have ads?
Which is updated more often, Thesys or Harmonizer audio effect?
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