Comparison

76477 Complex Sound Synth vs Digi1616

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

Digi1616

Features
Read full description

The Digi1616 App extends your digital audio processor Digi1616/Digi168/Digi88 with remote control capability. Almost any feature can be remoted from your iPad connected via Wi-Fi. The offline mode allows you to test the App and get familiar with the processor features without the actual hardware.

Screenshots

76477 Complex Sound Synth4 screens
Digi16161 screens

Verdict

The call

The clearest difference is price: Digi1616 at Free against 76477 Complex Sound Synth's $2.99. Digi1616 also leads on update cadence (every 2 weeks vs every 3 months) and iOS requirement (9.0 vs 12.0). 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

Digi1616 is free to download; 76477 Complex Sound Synth costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

76477 Complex Sound Synth ships an update every 3 months, Digi1616 every 2 weeks. The most recent releases landed on October 23, 2026 and October 4, 2026 respectively.

Scorecard3 real differences · 7 level
76477 Complex Sound Synth versus Digi1616: the parameters behind the verdict, then further details
Parameter76477 Complex Sound SynthDigi1616
Price$2.99Free — better
Rating3.9 (9 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings9 — better—
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.09.0 — better
Further details — not scored
Size4 MB17 MB
Age rating4+4+
DeveloperBlack Cat Systems风光 王

In-app purchases

None

76477 Complex Sound Synth

No in-app purchases

None

Digi1616

No in-app purchases

Questions

Is 76477 Complex Sound Synth free?
76477 Complex Sound Synth costs $2.99, with no in-app purchases.
Is Digi1616 free?
Digi1616 is free to download, with no in-app purchases.
Do 76477 Complex Sound Synth or Digi1616 have ads?
Neither 76477 Complex Sound Synth nor Digi1616 shows ads.
Which is updated more often, 76477 Complex Sound Synth or Digi1616?
76477 Complex Sound Synth ships an update every 3 months, and Digi1616 every 2 weeks. Most recently, 76477 Complex Sound Synth was updated on October 23, 2026 and Digi1616 on October 4, 2026.

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