Phosphor 3 vs ProFlow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Phosphor 3
This app recreates a vintage digital synthesizer, offering a faithful emulation of a classic sound engine. It includes modern features like MPE, extensive modulation, and a new UI for sonic exploration.
- Vintage digital synthesizer emulation
- Additive synthesis engine
- MPE support
- Extensive modulation routing
- Preset manager
- Tuning tables
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Glow in the dark synthesis. Phosphor 3 is a dual-oscillator additive synthesizer that puts the raw building blocks of sound at your fingertips. Draw, randomize, or select up to 64 harmonics per oscillator, then shape them with envelopes, LFOs, cross-modulation, and a flexible mod matrix. Originally inspired by the alphaSyntauri, a rare digital additive synth from the early 1980s, Phosphor 3 takes that concept far beyond its origins with modern MPE expression, polyphonic modulation, and a full effects engine. --- Additive Oscillators Two identical additive oscillators, each with up to 64 individually editable harmonics. Start from classic shapes: sawtooth, triangle, square, or draw your own harmonic spectrum directly in the partial editor. The intelligent randomizer generates musically useful timbres with variable rolloff, density, and formant peaks, so every click produces something worth exploring. Choose 16, 32, or 64 partials per oscillator to balance complexity against CPU. Each oscillator has independent level, pan, transpose, fine tune, a noise generator with lo-fi downsampling, and cross-modulation (FM) for pushing timbres into harsher, more complex territory. Modulation Two ADSR envelopes with adjustable attack, decay, and release curves. Two LFOs with four waveforms (pulse, sine, saw, random), tempo sync, and the option to run polyphonically, a separate LFO per voice, or globally. An 8-source modulation matrix routes velocity, pressure, pitch bend, mod wheel, CC 74, triggered random, and both LFOs to destinations across the oscillators and effects. Effects Stereo delay with independent left/right time, feedback, and cross-channel feedback for ping-pong and rhythmic patterns. Tempo sync locks delay times to your DAW. Dual band-pass filters after the delay let you carve the wet signal into resonant, frequency-specific textures. Expression Full MPE support with per-note pitch bend, pressure, and slide across 16 polyphonic voices. Mono legato and mono retrigger modes with adjustable portamento. Unison mode for thick, detuned stacks. A scrollable 128-key on-screen keyboard with velocity from touch position, pitch bend from horizontal drag, and channel pressure from vertical drag, no hardware controller required. Tuning MTS-ESP client support for real-time microtuning from any MTS-ESP master. TUN file import for custom scales. Standard 12-TET with adjustable A4 reference. Supports AUv3 for use in GarageBand, AUM, Cubasis, and other AUv3-compatible hosts.
ProFlow
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Pro Flow is a lyric workspace built for writing to a beat — on iPhone, iPad, Mac, and Windows, and as a VST3 inside your DAW. Keep verses, hooks, and ad-libs in one place. Import your tracks, tag sections, look up rhymes, record voice takes, shoot video performances, and pin photos, clips, and sticky notes on an inspiration board — then keep going without breaking the pocket. WRITE • Lyric catalog with folders, search, and recently deleted • Notepad with section tags so the song stays organized as you draft • Optional rhyme suggestions for a single word — not an AI songwriter • Link a beat to a lyric and write while it plays PLAY • Import audio into playlists and folders • Mini player and full player with A–B loops and tap tempo • Keep writing while a take or beat runs in the background CAPTURE • Voice memos for ideas the second they land • Video performances with a teleprompter over your beat • Inspiration boards for photos, videos, and notes EVERYWHERE YOU WORK Pro Flow is cross-platform. Use this app on iPhone and iPad. The same writer’s studio is also available as a standalone app on Mac and Windows, and as a VST3 plugin inside your DAW — so you can write in the same flow on your phone, at the desktop, or next to your session in Logic, Ableton, FL Studio, and more. A mobile App Store purchase covers the iOS app. Desktop and plugin access is licensed separately at theproflow.app. YOURS Your writing and media stay on this device. You own your work. Sign in only if you want optional cloud sync across your devices. Local files are never locked. Pro Flow is a writer’s studio, not a DAW replacement. Support: support@theproflow.app
Screenshots
Verdict
The clearest difference is price: ProFlow at Free against Phosphor 3's $5.99. ProFlow also leads on update cadence (every 3 weeks vs every 11 months) and device support (3 vs 1). Phosphor 3's advantage is iOS requirement (12.0 vs 15.1). On ads and in-app purchases 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
ProFlow is free to download; Phosphor 3 costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Phosphor 3 ships an update every 11 months, ProFlow every 3 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | Phosphor 3 | ProFlow |
|---|---|---|
| Price | $5.99 | Free — better |
| Rating | 4.7 (9 ratings) — better | — |
| Positive reviews | 78.6% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 11 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 27 MB | 55 MB |
| Age rating | 4+ | 12+ |
| Developer | Audio Damage, Inc. | Daniel Sierra |
In-app purchases
Phosphor 3
No in-app purchases
ProFlow
No in-app purchases









