Private · Quality · Tools. Offline-first PWA tools that respect your privacy — no accounts, no servers, no tracking.
Plant an intention as a flower under tonight's real moon. Water it with a one-line reflection; at the full moon, harvest your intentions into a constellation you name and keep. No streaks — nothing dies if you miss a day. Offline after install, no account.
Mark it once, walk back to it anytime. Offline GPS markers for shutoff valves, trail cams, property corners and finds — a high-tech compass walks you straight back. Self-drawn map & zones, GPX/KML export. No signal required, no subscription.
Offline-first PWA tools for sourdough bakers and home gardeners. Track starters, log harvests, plan bakes — without an account.
Buy any contempl8 tool as a single HTML file. No subscription, no updates required, yours forever.
No accounts. No servers.
No telemetry. No exceptions.
Tactile key, real-time decoding, audio feedback. Record and replay your keying.
Five offline games for children — ABC, phonics, counting, math, and Turtle Tap. No accounts, no ads, safe by design.
RC, LR, RLC and active op-amp filters. Live Bode, Nyquist, impulse and step plots. Filter designer for Butterworth / Chebyshev / Bessel.
Cascaded biquad filters with live frequency response. Exports CMSIS-ready C for ARM DSP — float32, Q31, Q15.
Alkaline AAA/AA/C/D/9V runtime and discharge modeling. Shepherd voltage + Peukert capacity, CSV export.
More signal & power tools in the queue. Watch this space.
Draw a line anywhere on a world map and read the earth under it. Hypsometric elevation profile, sea-level and origin-relative heights, climb totals, famous lines from the Dead Sea to Everest. Copernicus GLO-90 terrain data.
Yes. Every contempl8 tool is free to use in your browser, with no account required and no paywall.
Yes. contempl8 tools are offline-first PWAs that run locally in your browser, so most features keep working without an internet connection.
No. There are no accounts, no servers, and no tracking — your data never leaves your device.
No. Tools run directly in a modern browser. PWAs like contempl8.studio can optionally be installed for offline use.