Building real things, in public
Notes from DEMHA FUTURE — how we build apps fast with AI, and what we learn.
Sort a List — free online tool
Sort any list of lines online for free, right in your browser. Pick A-Z, Z-A or other orders. Nothing is uploaded, it all stays on your device.
SOW Generator — free online tool
Build a clear Statement of Work in minutes, free and online, right in your browser with nothing uploaded.
Spain IVA Calculator — free online
Add or take off Spanish IVA at 21%, 10% or 4% in seconds. Free and online, right in your browser, nothing uploaded.
Spam Word Checker — free online tool
Check your email for spam-trigger words and a deliverability risk score, free and online, right in your browser with nothing uploaded.
Spin the Wheel — free online name picker
A free spinning wheel to pick a random name online. Type the names, give it a spin, and the winner shows up right in your browser.
Split the Bill Calculator — free online
Split a restaurant bill with tip evenly between friends, free and online — it runs right in your browser, nothing uploaded.
SQL Formatter — free online tool
Paste messy SQL and get clean, indented code in one click — free and online, right in your browser, nothing uploaded.
SQL to JSON Converter — free online
Turn SQL INSERT rows into a clean JSON array, free and online, right in your browser with nothing uploaded.
Square Image Maker — free online tool
Fit any photo into a square or portrait frame without cropping, add a blurred or solid background, and save a ready PNG — free online, right in your browser.
Average Star Rating Calculator — free online
Work out your average star rating and see how many 5-star reviews you need to hit a target. Free and online, right in your browser, nothing uploaded.
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