# Phosphor 3 vs ProFlow

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.

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.

## The numbers

| Metric | Phosphor 3 | ProFlow |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.7 (9 ratings)](https://appshunter.io/ios/app/phosphor-3/id1499115553/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 78.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 27 MB | 55 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Audio Damage, Inc.](https://appshunter.io/developer/1248448317) | [Daniel Sierra](https://appshunter.io/developer/6800392700) |

## What reviewers say

### Phosphor 3

[App page](https://appshunter.io/ios/app/phosphor-3/id1499115553)

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.

**Highlights:** Vintage digital synthesizer emulation, Additive synthesis engine, MPE support, Extensive modulation routing, Preset manager, Tuning tables

**In-app purchases:** none


### ProFlow

[App page](https://appshunter.io/ios/app/proflow-for-writers/id6800392698)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Phosphor 3 free?

Phosphor 3 costs $5.99, with no in-app purchases.

### Is ProFlow free?

ProFlow is free to download, with no in-app purchases.

### Do Phosphor 3 or ProFlow have ads?

Neither Phosphor 3 nor ProFlow shows ads.

### Which is updated more often, Phosphor 3 or ProFlow?

Phosphor 3 ships an update every 11 months, and ProFlow every 3 weeks. Most recently, Phosphor 3 was updated on October 24, 2026 and ProFlow on October 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*