# Mono.F.F vs PerScaler

The clearest difference is in-app purchases: Mono.F.F at none against PerScaler's 1. PerScaler's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. PerScaler sells 1 one-off in-app purchase. Mono.F.F asks for nothing beyond the download.

Mono.F.F ships an update every 6 days, PerScaler every 11 days. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Mono.F.F | PerScaler |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 11 days |
| Size | 46 MB | 140 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hanwoong Kim](https://appshunter.io/developer/1877819460) | [12px, LLC](https://appshunter.io/developer/306578083) |

## What reviewers say

### Mono.F.F

[App page](https://appshunter.io/ios/app/monoff/id6759275099)

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

**In-app purchases:** none


### PerScaler

[App page](https://appshunter.io/ios/app/perscaler/id6760159037)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a coffee | $0.49 | one-time |


## Frequently asked questions

### Is Mono.F.F free?

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

### Is PerScaler free?

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

### Do Mono.F.F or PerScaler have ads?

Mono.F.F shows ads; PerScaler does not.

### Which is updated more often, Mono.F.F or PerScaler?

Mono.F.F ships an update every 6 days, and PerScaler every 11 days. Most recently, Mono.F.F was updated on October 1, 2026 and PerScaler on October 6, 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.*