Comparison

Ohmly vs Chargemetrix

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Ohmly

Features
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Your electrical toolkit, redesigned for speed. 26 pro tools, one clean app. Ohmly is the modern electrical calculator for electricians, students, and engineers. Solve VIRP calculations, decode resistor and SMD codes, check voltage drop, size conductors, design circuits, and keep your work organizedβ€”without ads. 26 PRO TOOLS β€’ Ohm's law, resistor color code, SMD resistor code β€’ Series/parallel resistance, voltage divider, LED resistor β€’ Reactance, resonance, AC impedance, power factor β€’ RC/RL/LC filters, decibels, op-amp gain, 555 timer β€’ Voltage drop, wire gauge/AWG, three-phase power β€’ Motor FLA, conduit fill, short-circuit current β€’ Transformer ratio, LM317 regulator β€’ Capacitor code, inductor color code, PCB trace width β€’ Heat sink thermal resistance and battery life WHY OHMLY β€’ Clean light and dark modes with no ads β€’ Shared display metrics across every tool β€’ Save, label, and search calculations β€’ Export multi-calculation PDF reports β€’ Home Screen, Lock Screen, and StandBy widgets β€’ Full Apple Watch companion Unlock Pro with a lifetime purchase or a low monthly plan. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Chargemetrix

Read full description

Chargemetrix is the go to application for monitoring your batteries anywhere in the world! Using our chargemetrix hardware to send monitoring data via 4G, it allows you to set notifications and track the status of all systems.

Screenshots

Ohmly4 screens
Chargemetrix4 screens

Verdict

The call

The clearest difference is update cadence: Chargemetrix at every 5 days against Ohmly's every 3 weeks. Chargemetrix also leads on iOS requirement (15 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Ohmly ships an update every 3 weeks, Chargemetrix every 5 days. The most recent releases landed on October 27, 2026 and September 20, 2026 respectively.

Scorecard2 real differences Β· 4 level
Ohmly versus Chargemetrix: the parameters behind the verdict, then further details
ParameterOhmlyChargemetrix
PriceFreeFree
Update frequencyEvery 3 weeksEvery 5 days β€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, Apple Watch β€” betteriPhone, iPod
Requires iOS26.015 β€” better
Further details β€” not scored
Size7 MB24 MB
Age rating4+4+
DeveloperAdam WilkieMetrix Advanced Technologies

In-app purchases

None

Ohmly

No in-app purchases

None

Chargemetrix

No in-app purchases

Questions

Is Ohmly free?
Ohmly is free to download, with no in-app purchases.
Is Chargemetrix free?
Chargemetrix is free to download, with no in-app purchases.
Do Ohmly or Chargemetrix have ads?
Neither Ohmly nor Chargemetrix shows ads.
Which is updated more often, Ohmly or Chargemetrix?
Ohmly ships an update every 3 weeks, and Chargemetrix every 5 days. Most recently, Ohmly was updated on October 27, 2026 and Chargemetrix on September 20, 2026.

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