# Sinusoid vs RingsFX

The clearest difference is price: Sinusoid at $4.99 against RingsFX's $14.99. Sinusoid also leads on iOS requirement (9.0 vs 13.0). RingsFX's advantage is review sentiment (100% vs 69%) and update cadence (fortnightly vs every 3 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Sinusoid costs $4.99 and RingsFX $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.9 for Sinusoid against 4.9 for RingsFX. Both are backed by a comparable volume of ratings — 13 and 27 respectively. Written reviews are what separate them: 69% of Sinusoid's written reviews are positive against 100% of RingsFX's.

Sinusoid ships an update every 3 months, RingsFX fortnightly. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Sinusoid | RingsFX |
| --- | --- | --- |
| Price | **$4.99** | $14.99 |
| Rating | [4.9 (13 ratings)](https://appshunter.io/ios/app/sinusoid/id416624795/reviews) | **[4.9 (27 ratings)](https://appshunter.io/ios/app/ringsfx/id6478013769/reviews)** |
| Number of ratings | 13 | **27** |
| Positive reviews | 68.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Paid | Paid |
| Size | 7 MB | 23 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Erik Sigth](https://appshunter.io/developer/385275335) | [4Pockets.com](https://appshunter.io/developer/370131860) |

## What reviewers say

### Sinusoid

[App page](https://appshunter.io/ios/app/sinusoid/id416624795)

Create music with a retro 8-bit inspired sound machine. Features 4 channels for tones and drums, with extensive sound sculpting options like filters, modulation, and effects. Export your creations and integrate with other music apps.

**Highlights:** 4 sound channels (3 tones, 1 drum/noise), Extensive audio parameters (envelope, vibrato, glide, filter), Ring modulation and FM synthesis, Arpeggiator, delay, and bit crusher effects, MIDI input and output support, Audiobus, IAA, and AUv3 integration, AIFF export and in-app music player

**Features:** Vision Pro support

**In-app purchases:** none


### RingsFX

[App page](https://appshunter.io/ios/app/ringsfx/id6478013769)

This music app emulates a renowned physical modeling synthesizer, offering diverse synthesis techniques and polyphonic capabilities. It allows for real-time parameter manipulation and can process external audio, creating unique sonic textures and rhythms.

**Highlights:** Physical modeling synthesis emulation, Multiple polyphony modes (Mono, Duo, Quad, True Polyphonic), Supports MIDI MPE and velocity sensitivity, External audio excitation, Mod Matrix for real-time parameter control, 7 unique synthesis modes, 6 mod-able and 6 global effects

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sinusoid free?

Sinusoid costs $4.99, with no in-app purchases.

### Is RingsFX free?

RingsFX costs $14.99, with no in-app purchases.

### Which has better reviews, Sinusoid or RingsFX?

RingsFX is rated higher. Sinusoid averages 4.9 out of 5 from 13 ratings, while RingsFX averages 4.9 from 27 ratings.

### Do Sinusoid or RingsFX have ads?

Neither Sinusoid nor RingsFX shows ads.

### Which is updated more often, Sinusoid or RingsFX?

Sinusoid ships an update every 3 months, and RingsFX fortnightly. Most recently, Sinusoid was updated on November 1, 2026 and RingsFX on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*