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Ohmlark vs CallsIQ

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 CallsIQ
DetailOhmlark logo OhmlarkCallsIQ logo CallsIQ
What it doesElectronics calculators for makers Free Erlang C calculator for contact center staffing and service level planning
StageNot given Not given
FoundedNot given Not given
Based inNot given ES
Pricing modelFreemium Free
PricingFree: $0 forever. Pro Monthly: $4 per month, cancel anytime. Pro Lifetime: $29 one-time payment. Not given
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
  • Calculates minimum agents needed for service level targets
  • Erlang C probability and queuing formulas
  • Computes average speed to answer (ASA)
  • Shows agent occupancy and utilization
  • Generates comparison table of agents and metrics
  • CSV export for Excel analysis
  • Embedded iframe version for websites
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
  • No registration required, runs in browser without sending data
  • Preset buttons for Spain's Law 10/2025 compliance targets
  • Based on ITU-T E.600 recommendation and ITU-D teletraffic engineering
  • Uses stable numerical recursion method for any agent count
  • Completely free with no advertising when embedded
Community votes00
DR (Domain Rating by Ahrefs)1 +1 (up) since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)04
Referring domains (Majestic)03

4 details filled in for both companies.

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