# 90daysChallenge vs 鴿鴿勤務手冊

The clearest difference is ads: 90daysChallenge at none against 鴿鴿勤務手冊's shown. 鴿鴿勤務手冊's advantage is update cadence (daily vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

90daysChallenge ships an update every 3 weeks, 鴿鴿勤務手冊 daily. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | 90daysChallenge | 鴿鴿勤務手冊 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/90dayschallenge/id6757923468/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Daily** |
| Monetization | Free | — |
| Size | 10 MB | 19 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [HSIN JUI YU](https://appshunter.io/developer/1869655062) | [Tzu-Ying Chan](https://appshunter.io/developer/6799665580) |

## What reviewers say

### 90daysChallenge

[App page](https://appshunter.io/ios/app/90dayschallenge/id6757923468)

This app helps you build lasting habits and improve focus through a structured 90-day challenge. It offers dedicated focus modes for deep work and quick sprints, along with daily reminders and motivational quotes to keep you on track.

**Highlights:** 90-Day Challenge Tracker, Deep Focus Mode, Sprint Mode, Daily Reminders, Daily Motivation Quotes

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

**In-app purchases:** none


### 鴿鴿勤務手冊

[App page](https://appshunter.io/ios/app/id6800798940)

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

**In-app purchases:** none


## Frequently asked questions

### Is 90daysChallenge free?

90daysChallenge is free to download, with no in-app purchases.

### Is 鴿鴿勤務手冊 free?

鴿鴿勤務手冊 is free to download, with no in-app purchases.

### Do 90daysChallenge or 鴿鴿勤務手冊 have ads?

鴿鴿勤務手冊 shows ads; 90daysChallenge does not.

### Which is updated more often, 90daysChallenge or 鴿鴿勤務手冊?

90daysChallenge ships an update every 3 weeks, and 鴿鴿勤務手冊 daily. Most recently, 90daysChallenge was updated on October 31, 2026 and 鴿鴿勤務手冊 on October 29, 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.*