A little more joy.
Every single day.
From useful tools to games you can get lost in. We turn small ideas into apps that feel at home in your everyday life.
Find something that feels like you.
Little tools. New routines. Playful escapes.
NAGI Focus
Make room to focus with nature sounds.
Meet the app ↗
Frenemy Defense Club
Read between the lines. Protect with your words.
Meet the app ↗
Illustration Detective
One illustration. A mystery to solve.
Meet the app ↗
AquaSteps
Every walk grows your aquarium.
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Famipoi
Turn everyday chores into family fun.
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The Room Without a Key
Solve puzzles and unravel a locked-room mystery filled with horror and suspense.
Meet the app ↗Web tools
A little help, right in your browser.
From a quick calculation to an image for your next project. Free tools, no account or app installation required.
The tools are currently available in Japanese.
Character counter
Check character counts, remaining space, and text over your limit.
Open toolResize & compress images
Resize a photo and save it as a JPEG or transparent PNG.
Open toolTurn a table into a chart
Paste a two-column table and save a bar or line chart as a PNG.
Open toolSavings calculator
Calculate monthly amounts for a savings goal and print a schedule.
Open toolBlood pressure log sheet
Choose a month and columns, then print a blank monthly log on A4.
Open toolPassword generator
Choose the length and character types to generate random passwords.
Open toolAlso explore URL conversion, photo metadata, printable pet visit notes, and more.Find a tool
From the studio
Make more of the everyday.
Small ideas.
Thoughtfully made.
AppSeed is a Japanese app development studio. We build useful tools and playful experiences for the moments that make up your day.
Meet AppSeed ↗