Private · Quality · Tools. Offline-first PWA tools that respect your privacy — no accounts, no servers, no tracking.
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.
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.