UdeTancho · Now Available

Every rep
strikes
like thunder

An automatic push-up counter with sharp impact feedback, daily records, and a waka collection that grows as you keep training

Download on the App Store See UdeTancho

Japanese-Inspired Utilities

Apps inspired by Japanese aesthetics

UdeTancho - Push-ups with Impact

Automatic push-up counting with Hyakunin Isshu waka progress

Wakeikoku - Japanese Ambient Scenery

Japanese ambient scenery that quietly tells time

LegScroll - Slash Effects & Conquer Japan

Auto-count squats with slash effects & conquer ancient Japan

Footscroll - Walk Japan with Edo Charm

Walk Japan's coastline — a pedometer with Edo charm

Games

Games that make idle moments fun

Reversi Trio - 3-Player Reversi, Spectator Mode & Mirror AI

3-Player Reversi with Spectator Mode & Mirror AI

Tashitama - Calc Ball Puzzle

Trace balls to make 10 — a fresh new puzzle

Reading Guides

Start with the articles that connect each app to its topic cluster

Reads for Footscroll Ino Tadataka Article Guide Start with his life, timeline, survey journey, and the accuracy of the Ino Map. Reads for LegScroll Squat Article Guide Beginner reps, consistency, tracking, and the history of squats. Reads for Tashitama Tashitama Article Guide Make-10 play, number puzzles, and the history of falling puzzle games. Reads for Wakeikoku Wakeikoku Article Guide Making-of notes, wadokei, temporal hours, and Japanese time aesthetics. Reads for Reversi Trio A Short History of Reversi From Victorian England to the modern game and three-player variants.

What's New

Recently published reading

2026.09.13 How Does an iPhone Count Push-Ups? TrueDepth and the Geometry of Invisible Light How can an iPhone tell how far away your face is? Explore … 2026.09.13 Collect Japanese Landscapes, One Poem at a Time You do not need to recognize a poet to picture a rice field, … 2026.09.13 What Is Hyakunin Isshu? A First Guide to Japan’s Hundred Poems New to Japanese poetry? Meet Hyakunin Isshu: one hundred poets, … All All articles → Browse every article and reading guide

Play on Web

We also have browser-based web apps

👣

Ino Tadataka Stepper

Tap left and right to move a surveyor along Japan's coastline.

🔟

Make 10 Sprint

A 30-second taste of Tashitama. Pick numbers that add up to 10.

💬

OuBot

Chat with the world's most laid-back AI friend. Collect all 100 reactions!

🎮

Web Apps

6 browser games — no install needed

Every repstrikeslike thunder