# SD FIT vs Zerofifty

The clearest difference is in-app purchases: Zerofifty at none against SD FIT's 1. Zerofifty also leads on update cadence (every 3 months vs every 19 months). SD FIT's advantage is iOS requirement (12.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. SD FIT sells 1 in-app purchase, starting at $7.99 per month. Zerofifty asks for nothing beyond the download.

SD FIT ships an update every 19 months, Zerofifty every 3 months. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | SD FIT | Zerofifty |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/sd-fit-6/id6475331380/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 3 months** |
| Monetization | Subscription | — |
| Size | 51 MB | 210 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Vladislava Sicicorez](https://appshunter.io/developer/1721086675) | [Zerofifty sport & fights](https://appshunter.io/developer/1759321915) |

## What reviewers say

### SD FIT

[App page](https://appshunter.io/ios/app/sd-fit-6/id6475331380)

This 6-week program uses kickboxing to help you achieve your fitness goals. Access to all content requires a paid subscription.

**Highlights:** 6-week kickboxing program, Fitness focused, Paid subscription access, Designed for results

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SD FIT-6 Monthly Subscription | $7.99 | per month |


### Zerofifty

[App page](https://appshunter.io/ios/app/zerofifty/id6575367957)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SD FIT free?

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

### Is Zerofifty free?

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

### Do SD FIT or Zerofifty have ads?

Neither SD FIT nor Zerofifty shows ads.

### Which is updated more often, SD FIT or Zerofifty?

SD FIT ships an update every 19 months, and Zerofifty every 3 months. Most recently, SD FIT was updated on October 25, 2026 and Zerofifty on October 17, 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.*