# FAC Phazer vs RiffAlly Slowdown

The clearest difference is price: RiffAlly Slowdown at Free against FAC Phazer's $9.99. RiffAlly Slowdown also leads on update cadence (daily vs every 4 months). FAC Phazer's advantage is ads (none vs shown) and device support (3 vs 1). On in-app purchases and iOS requirement there is nothing between them.

RiffAlly Slowdown is free to download; FAC Phazer costs $9.99 up front. FAC Phazer sells 3 one-off in-app purchases and RiffAlly Slowdown sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

FAC Phazer ships an update every 4 months, RiffAlly Slowdown daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | FAC Phazer | RiffAlly Slowdown |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[5.0 (30 ratings)](https://appshunter.io/ios/app/fac-phazer/id1507540450/reviews)** | — |
| Number of ratings | **30** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Daily** |
| Monetization | Paid | — |
| Size | 3 MB | 3 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Frederic Corvest](https://appshunter.io/developer/1230164765) | [Fernando Lanner Cardoso](https://appshunter.io/developer/6806420473) |

## What reviewers say

### FAC Phazer

[App page](https://appshunter.io/ios/app/fac-phazer/id1507540450)

This music effect plugin offers a rich sonic palette inspired by classic guitar pedals and hardware synthesizers. It provides extensive control over phasing effects with adjustable LFOs, unique characters, and versatile modulation options for all instruments and genres.

**Highlights:** Inspired by classic phaser units, Adjustable LFO with tempo sync, Four unique sonic characters, External modulation and Step mode, Stereo phase modulation, Universal AUv3 purchase

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Medium Tip | $4.99 | one-time |
| Large Tip | $14.99 | one-time |


### RiffAlly Slowdown

[App page](https://appshunter.io/ios/app/riffally-slowdown/id6808108610)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $1.99 | one-time |
| Supporter Tip | $4.99 | one-time |
| Generous Tip | $9.99 | one-time |


## Frequently asked questions

### Is FAC Phazer free?

FAC Phazer costs $9.99, and also offers in-app purchases.

### Is RiffAlly Slowdown free?

RiffAlly Slowdown is free to download, with in-app purchases available.

### Do FAC Phazer or RiffAlly Slowdown have ads?

RiffAlly Slowdown shows ads; FAC Phazer does not.

### Which is updated more often, FAC Phazer or RiffAlly Slowdown?

FAC Phazer ships an update every 4 months, and RiffAlly Slowdown daily. Most recently, FAC Phazer was updated on November 3, 2026 and RiffAlly Slowdown on October 31, 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.*