S vs SL Air
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
SL Air
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SL Air is a streamlined AUv3 audio effect for adding brightness, presence, stereo width and a polished top end to vocals, drums, samples and mixes. • Air and Lift for controlled brightness • Silk for smoother high-frequency detail • Wide for stereo expansion • Glow for a polished finish • Audio-reactive motion display • Factory presets and local user presets • AUv3 support for compatible iPad music hosts Works as a standalone preview app and as an AUv3 effect in GarageBand, AUM, Cubasis, BeatMaker 3 and other compatible hosts.
Screenshots
Verdict
The clearest difference is update cadence: SL Air at every 5 days against S's every 7 months. S's advantage is price ($2.99 vs $4.99). On ads, in-app purchases, device support and iOS requirement 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
S costs $2.99 and SL Air $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
S ships an update every 7 months, SL Air every 5 days. The most recent releases landed on September 19, 2026 and September 11, 2026 respectively.
| Parameter | S | SL Air |
|---|---|---|
| Price | $2.99 — better | $4.99 |
| Rating | 2.6 (11 ratings) — better | — |
| Positive reviews | 31.3% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 7 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Betowski | VIACHESLAV ZHILTSOV |
In-app purchases
S
No in-app purchases
SL Air
No in-app purchases
