Tools
Aspect Ratio Cal
A utility for calculating image and video dimensions while preserving the original aspect ratio.
com.app.aspectratiocalMobile applications
Practical tools. Simple experiences.
Kepler9 creates practical mobile tools for calculations, planning, shopping, text analysis, notes, and casual games.
Applications
Mobile utilities, organization apps, shopping tools, and casual two-player games with simple interfaces.
Tools
Character Counter
Analyze text and instantly see the total number of characters, words, lines, and spaces.
com.app.charactercounter
Tools
Coin Flip
Flip a virtual coin for a quick heads-or-tails result and review recent outcomes in the history.
com.app.coinflip
Business
Daily Planner
Manage personal tasks, work projects, study schedules, and daily routines with categories, priorities, due dates, search, filters, and sorting.
com.pickupplus.driver.app
Tools
Discount Calculator
Calculate the final price of an item after a discount and see the amount saved.
com.app.discountcalculator1
Casual
Four in a Row
A two-player strategy game where players connect four pieces horizontally, vertically, or diagonally.
com.game.fourinarow1
Racing
Notes App
Capture ideas, plan projects, create shopping lists, and keep daily notes organized in one place.
com.pickupplus.user.app
Tools
RomanNum Cal
Convert standard numbers into Roman numerals and Roman numerals back into regular numbers.
com.app.romannumconverter
Shopping
Shopping List
Create multiple shopping lists, add products with quantities and notes, and mark purchased items.
com.jengapap
Casual
Tic-Tac-Toe
The classic 3×3 board game for quick two-player matches with a clean board and simple interactions.
com.game.tictactoe11Developer introduction
About Kepler9
Kepler9 develops practical mobile utilities, organization apps, and casual two-player games with simple interfaces.
Its applications cover calculations, planning, shopping, text analysis, notes, and casual games.