# Spectre vs S

The clearest difference is update cadence: S at every 7 months against Spectre's every 96 months. S also leads on ratings volume (11 vs 2). Spectre's advantage is rating (3.0 vs 2.6) and price ($0.99 vs $2.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Spectre costs $0.99 and S $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Spectre holds the better App Store score, 3.0 against 2.6. That said, the two scores are not equally well evidenced: S has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 40% of Spectre's written reviews are positive against 31% of S's.

Spectre ships an update every 96 months, S every 7 months. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Spectre | S |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/spectre/id913027939/reviews)** | [2.6 (11 ratings)](https://appshunter.io/ios/app/s-modular/id1291071549/reviews) |
| Number of ratings | 2 | **11** |
| Positive reviews | **40.0% of reviews** | 31.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 96 months | **Every 7 months** |
| Monetization | Paid | Paid |
| Size | 46 MB | 7 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Michael Hand](https://appshunter.io/developer/854186096) | [Paul Betowski](https://appshunter.io/developer/538476580) |

## What reviewers say

### Spectre

[App page](https://appshunter.io/ios/app/spectre/id913027939)

This audio analysis utility provides real-time FFT and oscilloscope views for sound input. Customize waveform display, control sample rates, and zoom in for detailed analysis on iOS devices.

**Highlights:** FFT Analysis, Oscilloscope, Customizable Waveform, Linear & Logarithmic Forms, Pause/Play Controls, Zoom Functionality

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Spectre free?

Spectre costs $0.99, with no in-app purchases.

### Is S free?

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

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

Spectre is rated higher. Spectre averages 3.0 out of 5 from 2 ratings, while S averages 2.6 from 11 ratings.

### Do Spectre or S have ads?

Neither Spectre nor S shows ads.

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

Spectre ships an update every 96 months, and S every 7 months. Most recently, Spectre was updated on November 4, 2026 and S on November 3, 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.*