Food and maps
Matzip
An app that brings YouTuber-recommended restaurants, menus, prices, and ratings from different map services together.
SELECTED WORK & ONGOING EXPLORATIONS
too1sFrom ideas
to everyday use.
Apps we have built. Tools powered by AI. Experiments for what comes next.
Our products begin with an everyday problem worth solving.
27PROJECTS & COUNTING
11 Apps on Google Play16 AI development and research projectsBUILD. LEARN. EVOLVE.
BUILT FOR EVERYDAY LIFE
Built through everyday use.
Cumulative figures across our services
- Total users
- 50,000 or more users
- Total downloads
- 50,000 or more downloads
Project directory
11 projects in total
Choose a project to read its case study.- On Google Play
- On Google Play
Photography and lifestyle
PoseWiki
A collection of pose references for solo photos, couples, friends, and moments with pets.
- On Google Play
Gaming and maps
Shrine Map
A Tears of the Kingdom companion app for shrine locations, solutions, exploration points, and completion tracking.
- On Google Play
Productivity and widgets
Server Time Widget
A floating clock widget that helps users check a site's server time during course registration and ticket booking.
- On Google Play
AI and entertainment
ChatLotto
An entertainment app using ChatGPT technology to generate numbers and a personal daily lucky-number result.
- On Google Play
Lifestyle and motivation
One Phrase
An app that offers motivational phrases for personal goals and recommends quotes based on likes.
- On Google Play
Travel and calculators
Overseas Card Calculator
A calculator that estimates overseas card charges in Korean won using issuer and international card-network fee settings.
- On Google Play
Entertainment
Lotto Scratch
A free number generator with a scratch-card interaction that reveals a set of six numbers.
- On Google Play
Utilities and images
Photo QR Reader
A utility that reads QR codes in saved photographs and images and extracts the information they contain.
- On Google Play
Productivity and widgets
Rest Timer Widget
A floating timer and end-of-break prompts help users manage pauses between study, work, or exercise.
- On Google Play
Everyday travel information
Quick Access
A practical guide to subway stations with restrooms located inside the ticket gates.
Published apps are described using Dev_R's public Google Play listings. AI case studies reflect the projects' implementation and documentation. Web, server, and redesign work for the same product are grouped together.
Dev_R on Google PlayTHE NEXT THING WE BUILD
Bring this experience to the future of commerce.
AI that reads information, helps people choose, and reduces repetitive work.
We are applying what we have learned to bigger challenges in distribution and purchasing.