MultiTone Generator PRO vs AudioKit Synth One Synthesizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MultiTone Generator PRO
Generate and combine up to 16 different audio tones, including sine, rectangular, triangular, and sawtooth waves. Create frequency sweeps in both directions and play white or pink noise. This intuitive tool offers customizable ranges and sweep times for various audio testing needs.
- Create up to 16 tone combinations
- Play sine, rectangular, triangular, and sawtooth waves
- Generate frequency sweeps (min-max and max-min)
- Sweep repeat/wobble function
- Play white and pink noise
- Customizable frequency and sweep time ranges
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This is the all-new MultiTone Generator! An amazingly flexible and powerful frequency generator! Works with Audiobus and Audiobus Remote! CREATE up to 16 tone combinations. Play them individually or combined. PLAY TEST TONES Sine, Rectangular, Triangular and Sawtooth. PLAY FREQUENCY SWEEP TEST TONES in both directions (minimum to maximum frequency and maximum to minimum frequency). Use the SWEEP REPEAT / WOBBLE function. Play back white and pink NOISE. Fully CUSTOMIZABLE Frequency Min-Max ranges and Sweep time range. The MultiTone Generator is AMAZINGLY INTUITIVE and SIMPLE!
AudioKit Synth One Synthesizer
This is a free, open-source professional synthesizer app for iOS devices. It offers over 300 presets, MIDI support, a sequencer, and vintage-inspired filters. Learn music production basics and create your own sounds.
- Over 300+ Presets
- MIDI Support
- Vintage-Style Sequencer
- Analog Filters
- Expressive Arpeggiators
- Open-Source
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“A big step forward for mobile music” - CDM (Create Digital Music) "Groundbreaking iOS synth app" - Cult of Mac "Must-download for every iPad owner" - MacBreak *** "2018 App of the Year, Runner up" – Stuff.tv *** *** “Best iOS Music Apps of 2018” – Cult of Mac *** *** “Best of 2018: iOS Apps for Musicians” – Ask.Audio *** "AudioKit Synth One is a free feature-packed synth for your iPad, including 300+ presets created by professional sound designers behind M83, Tycho, and Rihanna" - Engadget *** “Best Music Apps of 2018” – Music Radar *** LEARN OUR INCREDIBLE STORY: Audiokitpro.com/synth *** Optimized for newer iPads & iPhones for best performance. Note: Requires iPhone 6 or higher screen size. App will not work on older iPhone 5/SE/Touch devices "A Stunning Endeavor... Sounds Amazing!" - Francis Preve, Electronic Musician Magazine “Amazing & Brilliant… Sounds fantastic!” – The Sound Test Room "A great example of human endeavor" - Gaz Williams, Sonic State "Sounds amazing... the start of something huge." - Ask.Audio AudioKit Synth One is the first completely free & open-source professional iOS Synthesizer app in history. No Ads. No IAP. It will always be free. "Powerful... Awesome" - Synthtopia.com "An amazing synth app for your iPad that’s as close to sorcery as it gets" - GarageBand Guide "Must Have iOS Synthesizer" - Synth Anatomy "Synth One is a robust piece of free software" - The Verge "It WOWS you... immediately fun to start tweaking!" - discchord "A damn fine synth" - Computer Music Magazine "Open-source and seriously powerful" - Future Music Magazine "A labour of love that everyone can enjoy" - Music Radar "Extremely exciting passion project" - Music Tech Magazine "Make your own imposing synthesizer sounds and teach yourself the basics of music production" - Lifehacker Learn more: audiokitpro.com/synth Created by over 100+ volunteers around the world (including sound designers for M83, Rihanna, Kanye West, Neon Trees, Mike Posner, Tycho, and more), this app includes MIDI support (play it with a MIDI keyboard or controller), sequencer, vintage-inspired analog filters, expressive arpeggiators, warm analog delays, and, over 300+ presets to get you started! Email us your music & bugs: hello@audiokitpro.com SYNTH ONE FEATURES: This synthesizer is completely free, fully functional, and ad-free. There are no IAP or anything to buy -- It’s the ultimate free iPad music instrument app! • Hybrid Analog/FM Poly Synthesizer • Over 300+ Presets crafted by famous sound designers • Audiobus 3 & Inter-app Audio (IAA) • Ableton Link • Five Oscillators (2 DCO, FM, Sub, Noise) • 2 LFOs with over a dozen routing possibilities • Vintage-Style 16-Step Sequencer • Classic poly arpeggiator • MIDI in (Control with a MIDI Keyboard or AudioBus/IAA) • Touchable ADSR Envelopes for Amp & Filter • FM Oscillator w/ Mod • Mono glide and legato • Dedicated Sine/Square -12/24 Sub Osc • 4-Pole Vintage Low-Pass Filter • High-Pass/Band Pass Filters • Beautiful Costello Reverb • Multi-tap (ping-pong) delay • TouchPads • Preset & Bank Import/Export & More… BONUS: Full Source code is now available! AudiokitPro.com/Synth Plus, it’s completely open-source. Use the code to learn how to build your own synth app or modify the app yourself! OFFICIAL VIDEO: https://youtu.be/hwDNgCYowYs "Amazing noises that will make your ears squee with glee" - Stuff Magazine "Pick of the Week" - MacBreak On the roadmap: • MPE Support (Play w/ a Roli Seaboard) • AUv3 Plug-in support
Screenshots
Verdict
The clearest difference is price: AudioKit Synth One Synthesizer at Free against MultiTone Generator PRO's $9.99. AudioKit Synth One Synthesizer also leads on ratings volume (27K vs 103) and review sentiment (95% vs 83%). On rating, update cadence, ads and in-app purchases 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
AudioKit Synth One Synthesizer is free to download; MultiTone Generator PRO costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for MultiTone Generator PRO against 4.9 for AudioKit Synth One Synthesizer. That said, the two scores are not equally well evidenced: AudioKit Synth One Synthesizer has 27K ratings behind it against 103, so its average is the more settled of the two. Written reviews are what separate them: 83% of MultiTone Generator PRO's written reviews are positive against 95% of AudioKit Synth One Synthesizer's.
MultiTone Generator PRO ships an update every 6 weeks, AudioKit Synth One Synthesizer monthly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | MultiTone Generator PRO | AudioKit Synth One Synthesizer |
|---|---|---|
| Price | $9.99 | Free — better |
| Rating | 4.9 (103 ratings) | 4.9 (27K ratings) — better |
| Positive reviews | 83.3% of reviews | 94.5% of reviews — better |
| Number of ratings | 103 | 27K — better |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 13.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Gruber | AudioKit Pro |
Customer experience
MultiTone Generator PRO
AudioKit Synth One Synthesizer
Bugs and requests
MultiTone Generator PRO
Not enough reviews yet to summarise bugs or requests.
AudioKit Synth One Synthesizer
Reported bugs
5 issues- Login screen freezes
- Incompatible with older devices
- Keyboard issues on iPhone
- Crashes with Audiobus 3
- Mod wheel issues
Requested features
12 requests- Add AU support
- Add just intonation feature
- Add dotted-8th-note delay option
- Add more sound packs
- Add drum machine/sequencing capabilities
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- Add more complex waveforms
- Add multi-filter support
- Add more than 2 oscillators
- Add ability to record MIDI tracks
- Add support for Bluetooth MIDI controllers
- Add dark mode option
- Add advanced analytics dashboard
In-app purchases
MultiTone Generator PRO
No in-app purchases
AudioKit Synth One Synthesizer
No in-app purchases
Questions
Is MultiTone Generator PRO free?
Is AudioKit Synth One Synthesizer free?
Which has better reviews, MultiTone Generator PRO or AudioKit Synth One Synthesizer?
Do MultiTone Generator PRO or AudioKit Synth One Synthesizer have ads?
Which is updated more often, MultiTone Generator PRO or AudioKit Synth One Synthesizer?
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