Spectre vs S
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spectre
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.
- FFT Analysis
- Oscilloscope
- Customizable Waveform
- Linear & Logarithmic Forms
- Pause/Play Controls
- Zoom Functionality
Read full descriptionHide full description
Spectre is an iOS audio analysis utility designed to be useful and visually appealing, making use of retina displays. Feature Highlights: • FFT(Fast Fourier Transform) Analysis • Oscilloscope • Customizable Features: Wave Amplitude, Sample/Time Control, Line Width • Linear & Logarithmic Wave Forms • Pause/Play Controls • Zoom in/out on the Waveform! • Optimized for iPhone 3,4,5 and iOS 7 Currently this app takes input from standard input, and external mics. Cross-app sound analysis coming soon! Waveform recording also coming soon!
S
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.
- Single-screen interface
- Fast, hands-on patching
- Vintage 1970s synth sound
- Dual oscillators
- Resonant ladder filter
- Multiple modulation sources
Read full descriptionHide full description
S-Modular is a semi-modular synthesiser for iPad, designed for fast, hands-on patching without clutter. Everything is presented on a single screen, making sound design immediate and intuitive. Simply drag from one jack to another to create connections. S-Modular delivers a distinctive vintage sound inspired by classic 1970s synthesis — warm, rich, and full of character. Features Dual oscillators 24 dB/oct ladder filter Resonant high-pass and low-pass filters Two LFOs Four-step CV sequencer Four-track mixer Audio and CV splitter Two AHR envelope generators Delay effect
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Spectre | S |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 3.0 (2 ratings) — better | 2.6 (11 ratings) |
| Positive reviews | 40.0% of reviews — better | 31.3% of reviews |
| Number of ratings | 2 | 11 — better |
| Update frequency | Every 96 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 46 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Hand | Paul Betowski |
Customer experience
Spectre
S
In-app purchases
Spectre
No in-app purchases
S
No in-app purchases
