RSF2 vs SynthModule
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RSF2
Organize and manage your SoundFont 2 (.sf2) collection. Easily combine presets from multiple SoundFonts into new banks or split large files into individual instruments. All processing happens directly on your device for maximum privacy and security.
- Build themed banks in one tap
- Reorder presets by drag and drop
- Split giant SF2 files into parts
- 100% on-device processing
- Universal app for iPhone, iPad, and Mac
- Works with popular samplers and DAWs
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Is your SoundFont library out of control? You've got dozens — maybe hundreds — of .sf2 files scattered across iCloud, old folders and forgotten thumb drives. Every time you need a decent acoustic piano, you waste 15 minutes opening file after file in your sampler. Each bank has 20 presets but you only use 2. Rsf2 fixes that — once. HOW IT WORKS • BUILD THEMED BANKS IN ONE TAP Pull presets from 5 different SoundFonts and generate ONE .sf2 file containing only the ones you love. "My 10 Favorite Acoustic Pianos" with Steinway, Yamaha, Bösendorfer and Fazioli — all in one file, ready to load in your sampler. • REORDER PRESETS BY DRAG Visual edit mode: drag presets to dictate the exact MIDI order (bank:program) in the final file. Want Steinway D at program 0:0? Bösendorfer 290 at 0:1? You pick the sequence. • SPLIT GIANT SF2 INTO PARTS Bought a SoundFont with 30 instruments but only use 5? Split it in a tap into individual files — exactly the ones you want. WHY Rsf2 IS DIFFERENT • 100% ON YOUR DEVICE No cloud upload. No account. No cookies. No trackers. Your SoundFonts (many of which you PAID for) never leave your iPhone, iPad or Mac. • UNIVERSAL A single app for iPhone, iPad AND Mac. Buy on any device, install on the others for free. • WORKS WITH YOUR SAMPLER Cubasis, AUM, GarageBand, Logic Pro, Audiobus, FluidSynth, ROMpler, MIDI hardware — anything that speaks SoundFont 2. WHO IT'S FOR • Live keyboard players using an iPad on stage • Producers wanting clean libraries in their DAW • Sound designers recombining banks • Church studios, music schools • Composers and arrangers • Beatmakers sampling from SF2 ABOUT THE FORMAT SoundFont 2 (.sf2) is an open standard created by E-mu/Creative in 1995, still very much alive in hardware ROMplers, free plugins and mobile samplers. Rsf2 respects 100% of the spec. GET STARTED Tap "Add .sf2 files", point at a file in your iCloud Drive, mark the presets you love, name it, generate. That's it. Make your library a place where you can actually FIND things.
SynthModule
This app provides a professional-grade keyboard and synthesizer experience on your iPhone or iPad. It offers a versatile mixer, extensive sound import capabilities, and advanced features for live performance and music production.
- SoundFonts with custom import
- 8-channel mixer with FX
- Live Set for instant scene recall
- Drum Pad with sample playback
- AUv3 plugin hosting
- MIDI Learn with LED sync
- Low-latency audio
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SynthModule — Teclado, Sintetizador e Controlador MIDI no seu iPhone e iPad Para tecladistas que tocam ao vivo, músicos de worship, produtores, estudantes de música e quem usa controlador MIDI — som de teclado profissional direto no celular ou tablet, sem depender de hardware caro. O QUE TEM NO APP • SoundFonts em categorias (Piano, Strings, Brass, Guitar, Organ, Pad, Drum, Synth e mais), com importação livre de SF2 próprio — use sua coleção sem limites. • Mixer de 8 canais com pan, mute/solo, ARM, FX por canal e fader master. • Live Set 4×4 para salvar cenas completas (instrumentos, FX, plugins AUv3, backing track e arpejador) e fazer recall instantâneo no meio do show. Até 2.048 presets (8 bancos × 16 páginas × 16 slots) — organize por gênero, show ou momento do set. • Drum Pad com 15 pads e 6 bancos para samples MP3/WAV de bateria, percussão e FX. • Pad Contínuo — muito usado em worship para sustentar uma nota durante toda a música. 4 camadas sobrepostas, filtro, corte, release, nota raiz e 5 presets. • Arpejador de 16 passos com BPM, taxa, gate e patterns editáveis. Salve no preset do Live Set e dispare pelo botão do arpejador. • Teclado completo (C-2 a C8) com pitch bend, modulation wheel e sustain. • Player MP3/WAV integrado para backing tracks dentro do preset. • Rack de FX completo: compressor VCA com sidechain, EQ de 3 bandas, reverb, delay, tremolo, ADSR, filtros LP/HP, portamento e rotary Leslie. • Host de plugins AUv3: carregue plugins de áudio e instrumentos de terceiros (Korg Module, NumaPlayer, AudioKit Pro, ROLI e muitos outros) dentro do app. As programações e presets de cada plugin AUv3 ficam salvos no Live Set Edit — chame uma cena e o plugin já volta exatamente com o som que você configurou, pronto pra tocar. • Mapeamento MIDI Learn: atribua qualquer botão, knob ou fader do seu controlador a volume, ARM, solo, FX, troca de preset e mais — com sincronização de LED (a luz do botão acende/apaga junto com o estado). • MIDI nativo via USB (com adaptador Lightning/USB-C), Bluetooth (BLE-MIDI) e Wi-Fi (RTP-MIDI / Network MIDI) — funciona com qualquer controlador. • 3 idiomas: Português, Inglês e Espanhol. REQUISITOS iPhone ou iPad com iOS 12 ou superior. Otimizado para iPad em modo paisagem. PRIVACIDADE O SynthModule não exige cadastro, não exibe anúncios e não compartilha seus dados. Seus presets e SoundFonts ficam apenas no seu dispositivo. Política de privacidade completa: https://synthmodule3.web.app/privacy SUPORTE Dúvidas, sugestões ou problemas? Escreva para suporte.synthmodule@gmail.com
Screenshots
Verdict
The clearest difference is price: SynthModule at Free against RSF2's $3.99. SynthModule also leads on update cadence (every 2 days vs weekly) and iOS requirement (15.0 vs 17.0). RSF2's advantage is in-app purchases (none vs 1). On rating, review sentiment, ratings volume and ads 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
SynthModule is free to download; RSF2 costs $3.99 up front. SynthModule sells 1 one-off in-app purchase. RSF2 asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for RSF2 against 5.0 for SynthModule. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
RSF2 ships an update weekly, SynthModule every 2 days. Both last shipped on November 5, 2026.
| Parameter | RSF2 | SynthModule |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Weekly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 111 MB |
| Age rating | 4+ | 4+ |
| Developer | Rubens Felicio | isael lopes guimaraes |
Customer experience
RSF2
SynthModule
In-app purchases
RSF2
No in-app purchases
SynthModule
- SynthModule Pro$29.99







