Comparison

microTERA vs 76477 Complex Sound Synth

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

Head to head
About

microTERA

Explore unique sonic textures with this waveshaping synthesizer. Generate novel sound patches randomly or program them with detailed controls. Includes a variety of built-in effects and advanced sequencing capabilities.

Highlights
  • Waveshaper with user programmable shape
  • Random sound patch generation
  • Sequencer with programmable steps
  • Built-in effects (Chorus, Phaser, Reverb, etc.)
  • Over 150 factory sounds
  • Audiobus and Ableton Link compatible
Read full description

Waveshaping Synthesis is a type of distortion synthesis that can create dynamic spectra in a controlled way. In waveshaping, it is possible to change the spectrum with the amplitude of the sound. A simple example of this method is the clipping caused by overdriving an audio amplifier. These simple method creates an astonishing variety of sounds which are very unique and can't be reproduced by any other contemporary synth! microTERA gives you also a method of getting randomly generated sound patches in a way you never experienced before: roll the dice! Every single try gives you a new unique sound patch, really every try, promised… Waveshaping Synthesis • Wavehaper with user programmable shape • Spectral shape specification • Three sine oscillators • Feedback input for noise components • 4 Low frequency oscillators • 4 Envelopes with tempo sync • 64 time/level segments per envelope • Monophonic or polyphonic with 16 voices. • Over 150 factory sounds • Uses programmable sequences with up to 32 steps.  • Can trigger single notes and chords. • Unique randomizer generates Arpeggios with 100% usability. • 32 Arpeggios included, unlimited useer arpeggios possible. • For each step you can program tie, accent, transposition and note order Effects • Chorus • Phaser • Distortion (Tape/Tube/...) • Echo/Delay • Reverb Global • Audiobus compatible (Input slot) with state saving • Support for Ableton Link. • Inter App Audio compatible. • CoreMIDI / Virtual MIDI • Audio recorder with Metronome. • Upload to SoundCloud and File Export. • Audio pasteboard.

About

76477 Complex Sound Synth

Create complex sound effects and music with a powerful synthesizer inspired by vintage hardware. Offers extensive modulation, noise generation, and customizable envelopes. Easily share your creations and control it with MIDI devices.

Highlights
  • Three oscillators with multiple wave types
  • Modulation capabilities for oscillators
  • Adjustable noise generator with filter
  • Configurable ADSR envelope
  • Unlimited sound effect generator boards
  • MIDI input support
  • Export/import sound effect boards
Features
Read full description

Synth 76477 is a powerful sound effects generator and synthesizer app, inspired by the famous SN76477 integrated circuit from the 1970s, but containing many enhancements. Features: • Three oscillators, each of which can produce a sine, triangle, sawtooth, or square wave • The outputs of two of the oscillators can be used to modulate the main oscillator • Frequency modulation can be linear or octave based • The duty cycle of the main oscillator can be adjusted in square wave mode • Noise generator, either analog or digital, with an adjustable low pass filter • Oscillator outputs can be mixed to the audio output • Fully configurable ADSR (Attack / Decay / Sustain / Release) envelope, linear or exponential • One shot mode available • Unlimited number of sound effect generator boards • User configurable array of sound effect generator buttons on each board, up to 50 on the iPhone and 150 on the iPad • Boards as well as individual generators can be exported and imported, and transferred to and from your computer via iTunes file sharing, making it easy to share with others Synth 76477 comes with a full set of sample sound generators, making it easy to understand how to use and configure them, and tap the full power of the app. Synth 76477 works with MIDI input devices (keyboards and controllers) in several interesting ways: If you plug a MIDI device into an iPad (via the USB Camera Connection Kit), Synth 76477 will automatically use it. You can plug several MIDI controllers in via a powered HUB, and Synth 76477 will use all of them. You can also use MIDI controllers over WiFi. Midi controllers can be used to trigger chip playback, or set the VCO frequency and volume. They can also be used in the chip editor to adjust the various settings. The app also supports Bluetooth audio devices. Visit the support page for step by step instructions on how to use the app: http://www.blackcatsystems.com/ipad/complex_sound_synthesizer_FAQ.html Buy your copy right now, and start generating your own sound effects in minutes.

Screenshots

76477 Complex Sound Synth4 screens

Verdict

The call

The clearest difference is rating: microTERA at 4.9 against 76477 Complex Sound Synth's 4.0. microTERA also leads on review sentiment (81% vs 50%) and price ($1.99 vs $2.99). 76477 Complex Sound Synth's advantage is device support (3 vs 1). On ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

microTERA costs $1.99 and 76477 Complex Sound Synth $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

microTERA holds the better App Store score, 4.9 against 4.0. Both are backed by a comparable volume of ratings — 8 and 10 respectively. Written reviews point the same way: 81% of microTERA's written reviews are positive against 50% of 76477 Complex Sound Synth's.

UpkeepUpdate frequency

microTERA ships an update every 4 months, 76477 Complex Sound Synth every 3 months. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.

Scorecard4 real differences · 6 level
microTERA versus 76477 Complex Sound Synth: the parameters behind the verdict, then further details
ParametermicroTERA76477 Complex Sound Synth
Price$1.99 — better$2.99
Rating4.9 (8 ratings) — better4.0 (10 ratings)
Positive reviews81.0% of reviews — better50.0% of reviews
Number of ratings810 — better
Update frequencyEvery 4 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS11.0 — better12.0
Further details — not scored
Size24 MB4 MB
Age rating4+4+
DeveloperHarry GohsBlack Cat Systems

Customer experience

microTERA

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews21 reviews
Positive81.0%
Neutral14.3%
Negative4.8%

76477 Complex Sound Synth

All ratings10 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews10 reviews
Positive50.0%
Neutral30.0%
Negative20.0%

In-app purchases

None

microTERA

No in-app purchases

None

76477 Complex Sound Synth

No in-app purchases

Questions

Is microTERA free?
microTERA costs $1.99, with no in-app purchases.
Is 76477 Complex Sound Synth free?
76477 Complex Sound Synth costs $2.99, with no in-app purchases.
Which has better reviews, microTERA or 76477 Complex Sound Synth?
microTERA is rated higher. microTERA averages 4.9 out of 5 from 8 ratings, while 76477 Complex Sound Synth averages 4.0 from 10 ratings.
Do microTERA or 76477 Complex Sound Synth have ads?
Neither microTERA nor 76477 Complex Sound Synth shows ads.
Which is updated more often, microTERA or 76477 Complex Sound Synth?
microTERA ships an update every 4 months, and 76477 Complex Sound Synth every 3 months. Most recently, microTERA was updated on October 5, 2026 and 76477 Complex Sound Synth on October 4, 2026.

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