Building real things, in public
Notes from DEMHA FUTURE — how we build apps fast with AI, and what we learn.
Demand Letter Generator — free online
Make a formal demand letter for an unpaid invoice online for free, right in your browser. Fill in the details, nothing is uploaded.
Depreciation Calculator — free online tool
Work out straight-line or declining balance depreciation with a year-by-year schedule, free and online, right in your browser with nothing uploaded.
Device Mockup Generator — free online
Frame a screenshot inside a browser, phone or laptop on a gradient. Free, online, right in your browser — nothing is uploaded.
Dice Roller & Coin Flip — free online
Roll dice or flip a coin online, free and instant, right in your browser. Nothing is uploaded, nothing is saved.
Diff Viewer — compare two texts free online
Compare two texts and see exactly what changed, line by line, free online and right in your browser with nothing uploaded.
Digital Business Card Maker — free online
Make a shareable contact card with a vCard and QR code, free and online — right in your browser, nothing uploaded.
Dimensional Weight Calculator — free online
Find the billable DIM weight for UPS, FedEx, or USPS from your box size and weight. Free online, right in your browser, nothing uploaded.
Website Disclaimer Generator — free online
Make a website disclaimer in seconds. Pick the clauses you need and copy the text, right in your browser, free and nothing uploaded.
Discount Calculator — free online
Work out the final sale price and how much you save from a percent off, free and online, right in your browser with nothing uploaded.
DMCA Takedown Notice Generator — free online
Make a complete, ready-to-send DMCA takedown notice online for free, right in your browser. Nothing you type is uploaded or saved.
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