Building real things, in public
Notes from DEMHA FUTURE — how we build apps fast with AI, and what we learn.
Statistics Calculator — free online tool
Get the mean, median, mode, range and standard deviation of any numbers, free and online, right in your browser with nothing uploaded.
Sticker Maker — free online tool
Add a clean outline to your cut-out PNG and turn it into a sticker, right in your browser. Free and online, nothing is uploaded.
Sticker Sheet Maker — free online
Make a printable sticker sheet with your own text, image, or a QR code on every sticker — free and online, right in your browser, nothing uploaded.
Online Stopwatch — free, no install
A free online stopwatch that counts up with start, pause, reset and lap times, right in your browser with nothing uploaded.
String Escaper / Unescaper — free online
Escape or unescape text for JSON, JavaScript, HTML, SQL, CSV, Regex, Shell or XML free online, right in your browser, nothing uploaded.
Email Subject Line Tester — free online
Test any email subject line free online: see the mobile and desktop preview and catch spam-trigger words, right in your browser with nothing uploaded.
Sublease Agreement Generator — free online
Make a sublease agreement between the main tenant and a subtenant, free and online, right in your browser with nothing uploaded.
IP Subnet Calculator — free online tool
Work out the network, broadcast, host range and mask from any IP and CIDR. Free and online, right in your browser, nothing uploaded.
Subscription Tracker — free online
List all your subscriptions and see your real monthly and yearly cost, live, right in your browser. Nothing is uploaded.
Email Signature Maker — free online
Build a support email signature with your name, hours and links, then copy the HTML — right in your browser, nothing uploaded.
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