# Back2fitness Online vs Runner Lock

The clearest difference is in-app purchases: Back2fitness Online at none against Runner Lock's 2. Back2fitness Online also leads on device support (4 vs 1) and iOS requirement (15.5 vs 17.0). Runner Lock's advantage is update cadence (every 4 days vs every 2 months). On price and ads there is nothing between them.

Both are free to download. Runner Lock sells 2 in-app purchases, starting at $6.99 per 3 months. Back2fitness Online asks for nothing beyond the download.

Back2fitness Online ships an update every 2 months, Runner Lock every 4 days. The most recent releases landed on November 5, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Back2fitness Online | Runner Lock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 207 MB | 17 MB |
| Requires iOS | **15.5** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [BACK2FITNESS INC](https://appshunter.io/developer/1596114980) | [YOUHEE LEE](https://appshunter.io/developer/6775473523) |

## What reviewers say

### Back2fitness Online

[App page](https://appshunter.io/ios/app/back2fitness-online/id6746949113)

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none


### Runner Lock

[App page](https://appshunter.io/ios/app/runner-lock-block-apps/id6802343455)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Runner Lock Premium 3 Months | $6.99 | per 3 months |
| Runner Lock Premium Annual | $14.99 | per year |


## Frequently asked questions

### Is Back2fitness Online free?

Back2fitness Online is free to download, with no in-app purchases.

### Is Runner Lock free?

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

### Do Back2fitness Online or Runner Lock have ads?

Neither Back2fitness Online nor Runner Lock shows ads.

### Which is updated more often, Back2fitness Online or Runner Lock?

Back2fitness Online ships an update every 2 months, and Runner Lock every 4 days. Most recently, Back2fitness Online was updated on November 5, 2026 and Runner Lock on October 25, 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.*