Tools
Tools
Small apps that do the maths in your browser. No sign-up, no data sent to a server.
- Energy
Energy monitor measurement analyser
Load the measurement history from an energy monitor (for example MEW-01 or MEW-02 in Supla Cloud), analyse your usage over any date range and compare tariffs on your own data.
Open - Energy
Appliance electricity usage calculator
Work out how much power a device uses and what it costs you — with a day schedule and duty cycles.
Open - Digital hygiene
Photo metadata inspector (EXIF)
See what your photo says about you — GPS location, date, phone model — and download a clean copy with the metadata stripped. The photo never leaves your browser.
Open - Energy
Peak hours (PSE grid data)
Check which hours are worth saving electricity today and when the grid has plenty to spare. Data pulled live from the free official PSE API.
Open - Energy
Quiz: how much power does it draw?
Guess how much energy household appliances use and what really drives your bill. Ten questions, different every time — see whether standby catches you out.
Open
This group is waiting for its first tool — check back soon.
I build these tools as a hobby — any of them may contain errors. Treat the results as a rough guide and check them before making important decisions.