# Phosphor 3 vs Serene Whisper

The clearest difference is price: Serene Whisper at Free against Phosphor 3's $5.99. Serene Whisper also leads on update cadence (every 6 days vs every 11 months) and device support (3 vs 1). Phosphor 3's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.0). On ads there is nothing between them.

Serene Whisper is free to download; Phosphor 3 costs $5.99 up front. Serene Whisper sells 1 one-off in-app purchase. Phosphor 3 asks for nothing beyond the download.

Phosphor 3 ships an update every 11 months, Serene Whisper every 6 days. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Phosphor 3 | Serene Whisper |
| --- | --- | --- |
| 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** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 days** |
| Monetization | Paid | — |
| Size | 27 MB | 59 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Audio Damage, Inc.](https://appshunter.io/developer/1248448317) | [博 彭](https://appshunter.io/developer/1293268076) |

## 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


### Serene Whisper

[App page](https://appshunter.io/ios/app/serene-whisper/id6503193688)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro user | $1.99 | one-time |


## Frequently asked questions

### Is Phosphor 3 free?

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

### Is Serene Whisper free?

Serene Whisper is free to download, with in-app purchases available.

### Do Phosphor 3 or Serene Whisper have ads?

Neither Phosphor 3 nor Serene Whisper shows ads.

### Which is updated more often, Phosphor 3 or Serene Whisper?

Phosphor 3 ships an update every 11 months, and Serene Whisper every 6 days. Most recently, Phosphor 3 was updated on November 3, 2026 and Serene Whisper on October 27, 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.*