Uber Synth vs S
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Uber Synth
This app offers a polyphonic multi-timbral FM synthesizer for iOS devices. It features a triple-oscillator sound engine with five distinct multi-timbral options for creating evolving and complex soundscapes. Supports Audiobus for integration with other music apps.
- Polyphonic multi-timbral FM synthesizer
- Triple-oscillator cross-modulated FM engine
- Five multi-timbral options
- Sound map and sound palettes
- Evolving sound generation
- Audiobus support
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Uber Synth is a polyphonic multi-timbral frequency modulated (FM) synthesizer that runs on any iOS device. The underlying sound engine is based on the triple-oscillator cross-modulated FM synthesizer first introduced in our xMod app. Uber Synth provides five multi-timbral options: 1) Mix the sounds of any two sound patches, 2) combine patches using the sound map, 3) Generate specified as well as randomized sound palettes across the keyboard, 4) Specify a region in sound space centered on a sound and move a point by a variable randomized amount within the region each time you play a note to create an evolving mix of the center sound and the sound nearest the point. 5) Do the same as above moving the point automatically at a specified rate. Supports Audiobus.
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
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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 rating: S at 2.6 against Uber Synth's 2.0. S also leads on ratings volume (11 vs 1) and price ($2.99 vs $3.99). Uber Synth's advantage is update cadence (every 3 months vs every 7 months) and review sentiment (40% vs 31%). 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
Uber Synth costs $3.99 and S $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
S holds the better App Store score, 2.6 against 2.0. That said, the two scores are not equally well evidenced: S has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 40% of Uber Synth's written reviews are positive against 31% of S's, so the app with the better star average is not the one people write more warmly about.
Uber Synth ships an update every 3 months, S every 7 months. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.
| Parameter | Uber Synth | S |
|---|---|---|
| Price | $3.99 | $2.99 — better |
| Rating | 2.0 (1 ratings) | 2.6 (11 ratings) — better |
| Positive reviews | 40.0% of reviews — better | 31.3% of reviews |
| Number of ratings | 1 | 11 — better |
| Update frequency | Every 3 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 7 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Mark Carlotto | Paul Betowski |
Customer experience
Uber Synth
S
In-app purchases
Uber Synth
No in-app purchases
S
No in-app purchases
