Apps by Kohei Kanagu
100-Hour Rule app icon

Utilities

100-Hour Rule

Kohei Kanagu

Free download In-app purchases unconfirmed
Open on Apple

About this app

It is said that if you spend 100 hours on anything, you will acquire a new skill or habit. This app allows you to measure the time you spend on your goals. When you spend the 100 hours that are said to be the standard for habituation, you will surely feel the new skill or habit. To support your goal achievement to the fullest, we will add new features from time to time. Please feel free to send us your opinions and requests.

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
0 ratings
0 Aug 18, 2026 · 0 ratings Aug 18, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free
Price history
Current Free
Free Aug 18, 2026 · Free Aug 18, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Aug 18, 2026 · 3:51 PM Free

Screenshots

100-Hour Rule iPhone screenshot100-Hour Rule iPhone screenshot100-Hour Rule iPhone screenshot 100-Hour Rule iPad screenshot