S vs JP
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
JP
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[Ad-Free Pro Version] The Legendary Vintage Sound Evolves for Pros! Thick, warm, and endlessly energetic. This authentic analog synthesizer app—built with deep respect for the legendary "JP Series" classics—is finally here as a "Pro Version," completely ad-free and packed with expanded features. While keeping the intuitive UI of the free version, we have added a brand-new professional control section to push your sound expressiveness to the limit. Immerse yourself in sound creation without any advertising distractions. Exclusive Pro Features 100% Ad-Free: Zero ads to interrupt your flow, performance, or inspiration. High-Quality FX Suite: Newly equipped with "Spatial Reverb" for immense depth, and "Delay/Chorus" to recreate that iconic, ultra-thick chorus sound. Deep Sound Shaping: Unlock advanced parameters designed for synth enthusiasts, including Master Tuning and Velocity Sensitivity to let your touch shape the tone. Key Features 8 Curated JP Voice Presets: Ready-to-use sounds, from classic fat brass to airy, floating pads. Intuitive VCF Filter: Real-time slider control over Cutoff, Resonance, ENV, MOD, and ATK. Arpeggiator & Performance Modes: Fuel your live play with SPLIT mode, SOLO mode, and a powerful arpeggiator. Retro Analog UI: Beautifully crafted with knurled metal knobs and classic LED indicators that evoke the original hardware. Perfect as an inspiration tool in the studio or a secret weapon for live gigs. Unleash the golden era of analog sound on your iPhone today!
Screenshots
Verdict
The clearest difference is update cadence: JP at every 2 days against S's every 7 months. JP also leads on price ($0.49 vs $2.99). S's advantage is iOS requirement (15.6 vs 26.5). On ads, in-app purchases 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
S costs $2.99 and JP $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.
S ships an update every 7 months, JP every 2 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.
| Parameter | S | JP |
|---|---|---|
| Price | $2.99 | $0.49 — better |
| Rating | 2.6 (11 ratings) — better | — |
| Positive reviews | 31.3% of reviews | — |
| Number of ratings | 11 — better | — |
| Update frequency | Every 7 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.5 |
| Further details — not scored | ||
| Size | 7 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Paul Betowski | Kouki Yoshimoto |
In-app purchases
S
No in-app purchases
JP
No in-app purchases









