# PB vs The Running Algorithm

The clearest difference is update cadence: PB at every 6 days against The Running Algorithm's every 3 weeks. The Running Algorithm's advantage is iOS requirement (18.6 vs 26.4). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

PB ships an update every 6 days, The Running Algorithm every 3 weeks. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | PB | The Running Algorithm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Size | 18 MB | 5 MB |
| Requires iOS | 26.4 | **18.6** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [PB-Runner](https://appshunter.io/developer/1896646554) | [TRA Technologies Limited](https://appshunter.io/developer/6774933597) |

## What reviewers say

### PB

[App page](https://appshunter.io/ios/app/pb-runner/id6769277536)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### The Running Algorithm

[App page](https://appshunter.io/ios/app/the-running-algorithm/id6774933595)

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

**In-app purchases:** none


## Frequently asked questions

### Is PB free?

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

### Is The Running Algorithm free?

The Running Algorithm is free to download, with no in-app purchases.

### Do PB or The Running Algorithm have ads?

Neither PB nor The Running Algorithm shows ads.

### Which is updated more often, PB or The Running Algorithm?

PB ships an update every 6 days, and The Running Algorithm every 3 weeks. Most recently, PB was updated on October 28, 2026 and The Running Algorithm 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.*