Comparison

76477 Complex Sound Synth vs Gliss

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

Head to head
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.

About

Gliss

Features
Read full description

Gliss is a touch instrument that sings. Two lines of light run across the screen. Slide a finger along one and the pitch follows continuously, like a voice or a bow, never stepping from key to key. Press lower on the line and the note swells; lift toward it and it fades to a breath. GRAVITY Each note of the scale is a well. Turn gravity down and the lines are fretless: every pitch in between is yours. Turn it up and your finger is gently pulled into tune: slide freely, land exactly. All the way up, it locks. FLEX The pitch follows your finger on an elastic. Loose, and it lags behind with a slow, singing portamento. Tight, and it snaps. SOUNDS 24 sounds built around a singing core: strings, voices, winds, leads, basses, pads, plucks and a few oddities, like a cello that sings, a choir, a horn in the fog. A slow orbital vibrato settles in once the note has been held, the way a singer's does. Shape any sound with tone, texture, subharmonic mixture, formant, filter and envelope. 28 TUNINGS Western modes, blues, Arabic maqam with true quarter tones, Turkish makam, Persian dastgah, klezmer, Southeast Asian scales, just intonation, 19 and 31 equal temperaments. Neutral intervals can be shaded from Egypt to Syria. MORE THAN TWO FINGERS • Chords: one finger can play a fifth, a triad, a seventh or an octave, always inside the scale • Arpeggiator: up, down, up and back, random, locked to tempo • Looper: record, overdub, loop, clear • Lanes: give each line its own sound, chord and octave • Tilt the device to bend and open the filter • Flick a note and it slides away, bounces and fades. Touch it to catch it IN YOUR HOST (AUv3) Gliss is also an AUv3 instrument for AUM, Loopy Pro, GarageBand, Logic and every host that loads Audio Units. Play its two lines with your fingers inside the host, or from a keyboard, an MPE controller or a MIDI track: every note lands on a line and gravity pulls it into your tuning. Ten parameters to automate, factory presets, and the whole instrument saved with your project. FREE, THEN PRO AND STUDIO Gliss is free to play: the whole gesture, three sounds (VOIX, PLUIE NOIRE, KOTO LUNE) and three tunings (major, minor and maqam Rast), in the app and in your host. Two one-time purchases, each on its own: GLISS PRO for the app unlocks all 24 sounds and their settings, all 28 tunings, chords, the arpeggiator, the looper, lanes, tilt and effects. GLISS STUDIO for your host unlocks every sound and tuning in the AUv3 plugin, with MIDI and MPE in and automation. No subscription. Designed for iPhone, iPad and iPhone Duo: landscape on a phone, any way you hold a large screen, the bars on the flat half and the settings on the raised half when it is folded. Dark, with nothing on screen that is not sound. No account. No ads. No tracking. Gliss collects nothing; your settings stay on your device.

Screenshots

76477 Complex Sound Synth4 screens
Gliss4 screens

Verdict

The call

The clearest difference is price: Gliss at Free against 76477 Complex Sound Synth's $2.99. Gliss also leads on update cadence (every 5 weeks vs every 3 months). 76477 Complex Sound Synth's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 17.0). On ads 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

Gliss is free to download; 76477 Complex Sound Synth costs $2.99 up front. Gliss sells 2 one-off in-app purchases. 76477 Complex Sound Synth asks for nothing beyond the download.

UpkeepUpdate frequency

76477 Complex Sound Synth ships an update every 3 months, Gliss every 5 weeks. The most recent releases landed on October 23, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
76477 Complex Sound Synth versus Gliss: the parameters behind the verdict, then further details
Parameter76477 Complex Sound SynthGliss
Price$2.99Free — better
Rating3.9 (9 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings9 — better—
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.0
Further details — not scored
Size4 MB2 MB
Age rating4+4+
DeveloperBlack Cat SystemsThinkspark

In-app purchases

None

76477 Complex Sound Synth

No in-app purchases

2 purchases

Gliss

One-time2
  • GLISS STUDIO$12.99
  • GLISS PRO$12.99

Questions

Is 76477 Complex Sound Synth free?
76477 Complex Sound Synth costs $2.99, with no in-app purchases.
Is Gliss free?
Gliss is free to download, with in-app purchases available.
Do 76477 Complex Sound Synth or Gliss have ads?
Neither 76477 Complex Sound Synth nor Gliss shows ads.
Which is updated more often, 76477 Complex Sound Synth or Gliss?
76477 Complex Sound Synth ships an update every 3 months, and Gliss every 5 weeks. Most recently, 76477 Complex Sound Synth was updated on October 23, 2026 and Gliss on October 31, 2026.

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