# Rivet 01 vs Oktopus Synthesizer

The clearest difference is price: Rivet 01 at Free against Oktopus Synthesizer's $4.99. Rivet 01 also leads on rating (5.0 vs 4.8) and review sentiment (100% vs 90%). Oktopus Synthesizer's advantage is in-app purchases (none vs 3) and iOS requirement (15 vs 17.6). On ratings volume, update cadence, ads and device support there is nothing between them.

Rivet 01 is free to download; Oktopus Synthesizer costs $4.99 up front. Rivet 01 sells 3 one-off in-app purchases. Oktopus Synthesizer asks for nothing beyond the download.

Rivet 01 holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 12 respectively. Written reviews point the same way: 100% of Rivet 01's written reviews are positive against 90% of Oktopus Synthesizer's.

Rivet 01 ships an update every 10 days, Oktopus Synthesizer every 5 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | Rivet 01 | Oktopus Synthesizer |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/rivet-01-console/id6758555219/reviews)** | [4.8 (12 ratings)](https://appshunter.io/ios/app/oktopus-synthesizer/id6790597981/reviews) |
| Number of ratings | 6 | **12** |
| Positive reviews | **100.0% of reviews** | 90.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 4 MB | 111 MB |
| Requires iOS | 17.6 | **15** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joe Topjian](https://appshunter.io/developer/1860697112) | [Vyacheslav Koristov](https://appshunter.io/developer/6784900754) |

## What reviewers say

### Rivet 01

[App page](https://appshunter.io/ios/app/rivet-01-console/id6758555219)

This audio effect plugin adds saturation and drive to your music, perfect for techno and industrial genres. It can be used on drum, synth, or mix buses to enhance weight and grit, offering subtle warmth to aggressive crunch. It functions as both a standalone app and an AUv3 plugin.

**Highlights:** Console-style saturation and drive, AUv3 plugin compatibility, Standalone app functionality, Oversampling for clean high-drive, High pass filtering, Pedal-style character

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip - Small | $0.99 | one-time |
| Tip - Medium | $1.99 | one-time |
| Tip - Large | $3.99 | one-time |


### Oktopus Synthesizer

[App page](https://appshunter.io/ios/app/oktopus-synthesizer/id6790597981)

This powerful iOS synthesizer and AUv3 extension allows for deep sound design and music creation. Shape sounds with 8 synth blocks, combine oscillators and samples, and utilize a flexible effects chain. It functions as a standalone instrument or within compatible DAWs.

**Highlights:** 8-block synth architecture, Oscillator and sample combination, AUv3 instrument support, Sample loading and playback, Flexible effects chain, MPE and MIDI input support, Built-in spectrometer

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

**In-app purchases:** none


## Frequently asked questions

### Is Rivet 01 free?

Rivet 01 is free to download, with in-app purchases available.

### Is Oktopus Synthesizer free?

Oktopus Synthesizer costs $4.99, with no in-app purchases.

### Which has better reviews, Rivet 01 or Oktopus Synthesizer?

Rivet 01 is rated higher. Rivet 01 averages 5.0 out of 5 from 6 ratings, while Oktopus Synthesizer averages 4.8 from 12 ratings.

### Do Rivet 01 or Oktopus Synthesizer have ads?

Neither Rivet 01 nor Oktopus Synthesizer shows ads.

### Which is updated more often, Rivet 01 or Oktopus Synthesizer?

Rivet 01 ships an update every 10 days, and Oktopus Synthesizer every 5 days. Most recently, Rivet 01 was updated on October 24, 2026 and Oktopus Synthesizer on October 24, 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.*