# 100 Day Challenge vs DoZen Client

The clearest difference is update cadence: DoZen Client at every 11 days against 100 Day Challenge's every 3 months. 100 Day Challenge's advantage is iOS requirement (11.0 vs 14.0). 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.

100 Day Challenge ships an update every 3 months, DoZen Client every 11 days. The most recent releases landed on September 28, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | 100 Day Challenge | DoZen Client |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (17 ratings)](https://appshunter.io/ios/app/100-day-challenge/id468777725/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 69.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 11 days** |
| Monetization | Freemium | — |
| Size | 16 MB | 26 MB |
| Requires iOS | **11.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Goals Guy, LLC](https://appshunter.io/developer/399815423) | [IT WORX GULF FZ-LLC](https://appshunter.io/developer/1507022594) |

## What reviewers say

### 100 Day Challenge

[App page](https://appshunter.io/ios/app/100-day-challenge/id468777725)

This app provides a system, tools, and growth hacking strategies to transform your life and career in 100 days. It offers a master class in exponential growth, focusing on performance sprints and superior execution strategies to bridge the gap between intentions and results.

**Highlights:** System for exponential growth, Tools and growth hacking strategies, 100-day transformation program, Performance sprint framework, Daily accountability, Superior execution strategies

**Features:** macOS Compatibility

**In-app purchases:** none


### DoZen Client

[App page](https://appshunter.io/ios/app/dozen-client/id1625591507)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 100 Day Challenge free?

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

### Is DoZen Client free?

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

### Do 100 Day Challenge or DoZen Client have ads?

Neither 100 Day Challenge nor DoZen Client shows ads.

### Which is updated more often, 100 Day Challenge or DoZen Client?

100 Day Challenge ships an update every 3 months, and DoZen Client every 11 days. Most recently, 100 Day Challenge was updated on September 28, 2026 and DoZen Client on October 16, 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.*