# Sidney vs Relentless Challenge

The clearest difference is update cadence: Relentless Challenge at every 3 days against Sidney's every 19 months. 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.

Sidney ships an update every 19 months, Relentless Challenge every 3 days. The most recent releases landed on September 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Sidney | Relentless Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (18 ratings)](https://appshunter.io/ios/app/relentless-challenge/id6740840285/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 3 days** |
| Monetization | — | Free |
| Size | 38 MB | 28 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Familyworks LLC](https://appshunter.io/developer/1689432190) | [Relentless 2800](https://appshunter.io/developer/1791884565) |

## What reviewers say

### Sidney

[App page](https://appshunter.io/ios/app/sidney-shelby-county-ymca/id6740404943)

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

**In-app purchases:** none


### Relentless Challenge

[App page](https://appshunter.io/ios/app/relentless-challenge/id6740840285)

This app challenges groups to collectively log a significant distance of activity over a set period. It's designed to be difficult but achievable with teamwork and determination.

**Highlights:** Group activity logging, Team-based challenges, Distance tracking, Time-bound goals, User collaboration

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

**In-app purchases:** none


## Frequently asked questions

### Is Sidney free?

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

### Is Relentless Challenge free?

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

### Do Sidney or Relentless Challenge have ads?

Neither Sidney nor Relentless Challenge shows ads.

### Which is updated more often, Sidney or Relentless Challenge?

Sidney ships an update every 19 months, and Relentless Challenge every 3 days. Most recently, Sidney was updated on September 14, 2026 and Relentless Challenge on October 21, 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.*