# FOPP vs SF

The clearest difference is in-app purchases: SF at none against FOPP's 1. SF also leads on iOS requirement (15.5 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. FOPP sells 1 in-app purchase, starting at $2.49 per month. SF asks for nothing beyond the download.

FOPP ships an update every 2 months, SF every 6 weeks. The most recent releases landed on October 14, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | FOPP | SF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Size | 16 MB | 93 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [FOPP AS](https://appshunter.io/developer/1703948972) | [Never Offside Technologies AS](https://appshunter.io/developer/1549677131) |

## What reviewers say

### FOPP

[App page](https://appshunter.io/ios/app/fopp/id1478124247)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.49 | per month |


### SF

[App page](https://appshunter.io/ios/app/sf-appen/id6745502715)

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

**In-app purchases:** none


## Frequently asked questions

### Is FOPP free?

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

### Is SF free?

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

### Do FOPP or SF have ads?

Neither FOPP nor SF shows ads.

### Which is updated more often, FOPP or SF?

FOPP ships an update every 2 months, and SF every 6 weeks. Most recently, FOPP was updated on October 14, 2026 and SF on October 9, 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.*