Comparison

TestTone vs Synclavier Go! App and Plugin

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

Head to head
About

TestTone

Features
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This test signal generator is ideal for checking audio equipment and confirming audible frequency ranges.It can play sine, triangle, sawtooth, and square waves from 20 Hz to 20 kHz, as well as white noise and pink noise. Features • You can switch between preset frequencies, white noise, and pink noise using the frequency preset buttons. You can also tap the frequency display area to enter any desired frequency manually. The frequency can also be adjusted using the left/right buttons or by tapping the frequency display. • Supports switching between sine, triangle, sawtooth, and square waveforms. • Playback starts or stops by tapping the ON/OFF button or the icon at the top. Note Playing at high volumes may cause hearing damage or damage to your audio equipment. Please use with caution.

About

Synclavier Go! App and Plugin

Experience the legendary Synclavier sound on your mobile device. This app offers a powerful vintage synthesizer and sampler with modern MPE and AUv3 compatibility, allowing for deep sound design and integration with iOS DAWs.

Highlights
  • Vintage synthesizer and sampler
  • AUv3 client for iOS DAWs
  • MPE compatibility
  • 12 Partial Timbres
  • 16-track mixing console
  • Artist Preset Libraries
  • Sample Library
Features
Read full description

“Nothing sounds quite like a Synclavier” World-class iOS synthesis has arrived! The Synclavier® II helped shape a generation of popular music and film soundtracks. Now this beast of an emotional vintage synthesizer has been incarnated on iOS using much of the core DSP code from the original and keeping the authentic red-button interface that is both deep and immediate. Not only retro, but decidedly modern: fully compatible with MPE, Ableton Link, Audiobus 3, MIDI. And the included AUv3 client can run inside of iOS DAWs such as GarageBand, NanoStudio 2, BeatMaker 3, Cubasis 3, Auria Pro. The powerful Synclavier DSP Engine affords 12 Partial Timbres, Timbre Frames, Samples, FM-Synthesis and Additive-Synthesis methodologies. It’s so easy to create playable rich string sounds, fantastic Moog esque drones, Prophet like pads, crazy FM brass noises, or Roland 808 style drum hits. It’s a sound designer’s dream and a synthesist’s wonderland. But there’s more! We’ve added a ton of stuff. The original hardware was 8-bit. With newer technology, we can pack more fidelity and more features in this already awesome synth. MPE compatibility, seven timbre “quick-change” character buttons, 16-track mixing console, crazy-good Artist Preset Libraries from world-renowned sound designers, and lots more. The Synclavier was always a versatile attention-getting instrument, but now it’s a powerhouse synth to be reckoned with! Release 1.30 features include - • iPad, iPhone and iPad Touch compatibility iOS9 or later • 96-button authentic VPK interface • AUv3 client compatibility for use within iOS DAWs • 16 original “Factory Preset Libraries” (8 banks x 8 entries) - 979 timbres • 3 “Artist Libraries” - 127 all-new timbres • Sample Library with 116 high-quality soundfiles • Audio Setup 44.1/48 kHz and sample latency controls • 16-track multi-timbral implementation with mix controls (iPad only, iPhone is mono-timbral) • Audiobus-compatible stereo output • Meticulous re-creation of the Synclavier FM sound using hardware modelling • Soundfile playback, pitch-shifting, looping, and keyboard mapping • iCloud compatibility to easily share Timbres (or via Audiobus) • iTunes file sharing for backup of user timbres and mixes • Direct expression routing for pitch bend, mod wheel, velocity and pressure • Full compatibility with MPE interfaces • Ableton Link synchronization with Repeat/Arpeggiate • 7 character buttons to quickly sculpt any timbre • Embedded “Tour” pages detailing setup and operation • Library browser for saving and calling up Timbres Synclavier DSP Engine • 12 Partial Timbres • Delay-Attack-Decay-Release envelope generators • 100 Timbre Frames per Partial • Noise Floor and Bit Depth controls • Micro-tuning controls • Dynamic and Keyboard Envelopes • Vibrato and Tremolo LFOs • Authentic re-creation of the original instrument and sounds, adjustable from 4-bit grunge to 24 bit silky smoothness. Synclavier Go! is compatible with all iPad, iPhone and iPad Touch models that can operate iOS 9.0 or later. Soundfile playback and AUv3 compatibility require iOS11 or later. The latest iOS version that is compatible with your device is recommended. The Synclavier® knob is as unique today as it was revolutionary at the time of its introduction. The knob is a rate-of-change controller; close your eyes and let your right-brain kick in to the sound design process. Forget the numbers; forget the digits; let your ears guide the process. Sound design with a touch-screen and Synclavier® knob is as different from a mouse-driven GUI as, well, Synclavier® was different than the Fairlight CMI! The Synclavier Knob is an exciting and authentic option, but is not required for Synclavier Go! since a virtual knob is provided in the app. Note to Parents: Synclavier Go! is as educational as it is historic and authentic. This app can introduce your teenager to the technical aspects of sound and sound design in a fun and informative environment.

Screenshots

TestTone1 screens
Synclavier Go! App and Plugin4 screens

Verdict

The call

The clearest difference is price: TestTone at $1.99 against Synclavier Go! App and Plugin's $19.99. Synclavier Go! App and Plugin's advantage is update cadence (every 3 weeks vs every 6 months) and iOS requirement (12.0 vs 15.6). 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

TestTone costs $1.99 and Synclavier Go! App and Plugin $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TestTone ships an update every 6 months, Synclavier Go! App and Plugin every 3 weeks. The most recent releases landed on September 13, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 7 level
TestTone versus Synclavier Go! App and Plugin: the parameters behind the verdict, then further details
ParameterTestToneSynclavier Go! App and Plugin
Price$1.99 — better$19.99
Rating—4.7 (52 ratings) — better
Positive reviews—81.1% of reviews
Number of ratings—52 — better
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size8 MB94 MB
Age rating4+4+
DeveloperHTLabSynclavier Digital Corporation Ltd

In-app purchases

None

TestTone

No in-app purchases

None

Synclavier Go! App and Plugin

No in-app purchases

Questions

Is TestTone free?
TestTone costs $1.99, with no in-app purchases.
Is Synclavier Go! App and Plugin free?
Synclavier Go! App and Plugin costs $19.99, with no in-app purchases.
Do TestTone or Synclavier Go! App and Plugin have ads?
Neither TestTone nor Synclavier Go! App and Plugin shows ads.
Which is updated more often, TestTone or Synclavier Go! App and Plugin?
TestTone ships an update every 6 months, and Synclavier Go! App and Plugin every 3 weeks. Most recently, TestTone was updated on September 13, 2026 and Synclavier Go! App and Plugin on September 21, 2026.

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