Ohmlark vs WorthCay

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Ohmlark compared with WorthCay
Detail	Ohmlark	WorthCay
What it does	Electronics calculators for makers	Free Coast FIRE calculator to track your progress toward financial independence
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Freemium	Freemium
Pricing	Free: $0 forever. Pro Monthly: $4 per month, cancel anytime. Pro Lifetime: $29 one-time payment.	Free plan with 90-day trial: up to 20 accounts, 3 months snapshot history, multi-currency support, advanced charts, data export. Premium Monthly: $6/month with unlimited accounts and unlimited snapshot history. Premium Yearly: $59.99/year with all features unlocked.
Key features	Resistor Color Code: read 4, 5 and 6-band resistors or find bands for a value LED Resistor: pick the current-limiting resistor and power rating Voltage Divider: output voltage, loading effect, or solve R2 for target Vout RC Filter: cutoff frequency, time constant and attenuation at any frequency LC Resonance: resonant frequency, characteristic impedance and Q 555 Timer: astable frequency/duty cycle and monostable pulse width Battery Life: runtime from capacity, active/sleep current and duty cycle PCB Trace Width: IPC-2221 trace width for current and temperature rise Electronics Unit Converter: SI prefixes, AWG to mm², mil to mm, dBm to mW, oz copper	Coast FIRE calculator FIRE number calculator Progress tracking over time What-if scenario testing Multi-currency support Advanced charts and analytics Data export in JSON and CSV
What makes it different	Real E-series resistor values, not ideal numbers Engineering notation input and result sharing as links No ads, no tracking, no sign-up for free calculators Whole-device BOM costing and battery-life summary in Pro Works on phone at the bench	Organizes multiple real account types to match actual portfolio structure No signup required to run calculator; optional account for saving progress Immediate what-if analysis without reentering data
Community votes	0	0
DR (Domain Rating by Ahrefs)	1 +1 (up) since last check	9 no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	0	18
Referring domains (Majestic)	0	10

5 details filled in for both companies.

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