# S vs PaSSBot

The clearest difference is review sentiment: PaSSBot at 100% against S's 31%. PaSSBot also leads on rating (5.0 vs 2.6) and iOS requirement (11.0 vs 15.6). S's advantage is price ($2.99 vs $34.99) and device support (3 vs 1). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

S costs $2.99 and PaSSBot $34.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PaSSBot holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 11 and 8 respectively. Written reviews point the same way: 31% of S's written reviews are positive against 100% of PaSSBot's.

S ships an update every 7 months, PaSSBot every 4 months. The most recent releases landed on September 19, 2026 and June 30, 2026 respectively.

## The numbers

| Metric | S | PaSSBot |
| --- | --- | --- |
| Price | **$2.99** | $34.99 |
| Rating | [2.6 (11 ratings)](https://appshunter.io/ios/app/s-modular/id1291071549/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/passbot/id1557720096/reviews)** |
| Number of ratings | **11** | 8 |
| Positive reviews | 31.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 7 MB | 11 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Paul Betowski](https://appshunter.io/developer/538476580) | [SonicPlanet Audio Video Teknolojileri Anonim Sti.](https://appshunter.io/developer/946568989) |

## What reviewers say

### S

[App page](https://appshunter.io/ios/app/s-modular/id1291071549)

This semi-modular synthesizer app for iPad offers a hands-on sound design experience with a single-screen interface for intuitive patching. It delivers a warm, vintage sound inspired by 1970s synthesizers, featuring dual oscillators, resonant filters, and multiple modulation sources.

**Highlights:** Single-screen interface, Fast, hands-on patching, Vintage 1970s synth sound, Dual oscillators, Resonant ladder filter, Multiple modulation sources

**Features:** Vision Pro support

**In-app purchases:** none


### PaSSBot

[App page](https://appshunter.io/ios/app/passbot/id1557720096)

This app is a stochastic filter bank audio processor for iPad, offering advanced sound manipulation with various filter types and powerful stochastic generators. It allows for precise control over filter parameters and harmonic distribution, ideal for creating complex audio textures.

**Highlights:** Stochastic filter bank audio processor, Multiple filter types (Biquad, Ladder, SEM, Resonators), Up to 64 filters in stereo, Powerful stochastic generators, Individual filter parameter control, Harmonic distribution options, Precision DSP rendering (<1ms control rate)

**In-app purchases:** none


## Frequently asked questions

### Is S free?

S costs $2.99, with no in-app purchases.

### Is PaSSBot free?

PaSSBot costs $34.99, with no in-app purchases.

### Which has better reviews, S or PaSSBot?

PaSSBot is rated higher. S averages 2.6 out of 5 from 11 ratings, while PaSSBot averages 5.0 from 8 ratings.

### Do S or PaSSBot have ads?

Neither S nor PaSSBot shows ads.

### Which is updated more often, S or PaSSBot?

S ships an update every 7 months, and PaSSBot every 4 months. Most recently, S was updated on September 19, 2026 and PaSSBot on June 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.*