# 76477 Complex Sound Synth vs Rhythm Ace The clearest difference is review sentiment: 76477 Complex Sound Synth at 50% against Rhythm Ace's 0%. 76477 Complex Sound Synth also leads on rating (4.0 vs 2.0) and ratings volume (10 vs 1). Rhythm Ace's advantage is price (Free vs $2.99). On update cadence, ads and in-app purchases there is nothing between them. Rhythm Ace 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. 76477 Complex Sound Synth holds the better App Store score, 4.0 against 2.0. That said, the two scores are not equally well evidenced: 76477 Complex Sound Synth has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of 76477 Complex Sound Synth's written reviews are positive against 0% of Rhythm Ace's. 76477 Complex Sound Synth ships an update every 3 months, Rhythm Ace every 2 months. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively. ## The numbers | Metric | 76477 Complex Sound Synth | Rhythm Ace | | --- | --- | --- | | Price | $2.99 | **Free** | | Rating | **[4.0 (10 ratings)](https://appshunter.io/ios/app/76477-complex-sound-synth/id837866239/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/rhythm-ace/id6763743868/reviews) | | Number of ratings | **10** | 1 | | Positive reviews | **50.0% of reviews** | 0.0% of reviews | | In-app purchases | No | No | | Ads | No | No | | Update frequency | Every 3 months | **Every 2 months** | | Monetization | Paid | **Free** | | Size | 4 MB | 6 MB | | Requires iOS | **12.0** | 18.0 | | Devices | **iPhone, iPad, iPod** | iPhone | | Age rating | 4+ | 4+ | | Developer | [Black Cat Systems](https://appshunter.io/developer/301047032) | [Tero Aarnio](https://appshunter.io/developer/1895470476) | ## What reviewers say ### 76477 Complex Sound Synth [App page](https://appshunter.io/ios/app/76477-complex-sound-synth/id837866239) 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:** macOS Compatibility, Vision Pro support **In-app purchases:** none ### Rhythm Ace [App page](https://appshunter.io/ios/app/rhythm-ace/id6763743868) This app is a faithful simulator of a vintage 1967 drum machine, recreating its authentic analog sounds and rhythm presets. It allows for real-time synthesis of percussion, pattern layering, and individual voice muting for unique groove creation. **Highlights:** Faithful vintage drum machine simulation, Real-time synthesized analog sounds, 16 classic rhythm presets, Authentic pattern combining, Individual voice cancel controls, Precision tempo control **Features:** macOS Compatibility, Vision Pro support **In-app purchases:** none ## Frequently asked questions ### Is 76477 Complex Sound Synth free? 76477 Complex Sound Synth costs $2.99, with no in-app purchases. ### Is Rhythm Ace free? Rhythm Ace is free to download, with no in-app purchases. ### Which has better reviews, 76477 Complex Sound Synth or Rhythm Ace? 76477 Complex Sound Synth is rated higher. 76477 Complex Sound Synth averages 4.0 out of 5 from 10 ratings, while Rhythm Ace averages 2.0 from 1 ratings. ### Do 76477 Complex Sound Synth or Rhythm Ace have ads? Neither 76477 Complex Sound Synth nor Rhythm Ace shows ads. ### Which is updated more often, 76477 Complex Sound Synth or Rhythm Ace? 76477 Complex Sound Synth ships an update every 3 months, and Rhythm Ace every 2 months. Most recently, 76477 Complex Sound Synth was updated on September 17, 2026 and Rhythm Ace on September 24, 2026. --- *Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*