Comparison

Electrician's assistant vs ONWATT

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

Head to head
About

Electrician's assistant

Features
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Electrical Calculations and Guides This application is a comprehensive tool for electrical calculations, guides, and creating work orders and quotations. With its user-friendly interface, you can perform quick and accurate calculations and customize your documents. Calculations The app includes various electrical calculations: β€’ Voltage Calculation – Determines voltage based on different parameters. β€’ Current Calculation – Calculates current using Ohm’s law and other formulas. β€’ Power and Resistance Calculations – Computes electrical power and resistance based on voltage, current, and other factors. β€’ Cable Sizing – Determines the appropriate cable cross-section based on load and other parameters. β€’ Energy Calculation – Calculates daily, monthly, and yearly energy consumption and costs. β€’ Loop Resistance and Short-Circuit Current Calculation – Determines the total fault loop resistance and the possible short-circuit current. β€’ Resonant Circuit Impedance Calculation – Calculates impedance considering inductance, capacitance, and resistance. β€’ Fault Loop Impedance Calculation – Determines the required impedance for proper tripping of the protective device. Guides The app includes useful guides and theoretical explanations related to electrical systems: β€’ Ohm’s Law – The fundamental relationship between voltage, current, and resistance. β€’ Kirchhoff’s Law – Describes the distribution of current and voltage in circuits. β€’ Touch Protection – Covers the basics of electrical safety and protection against electric shock. β€’ Residual Current Device (RCD) – Explains protection mechanisms against overcurrent or electric shock. β€’ Circuit Breakers – Provides details on the use and operation of low-voltage circuit breakers. Work Order and Quotation Creation The app allows you to create and edit work orders and quotations: β€’ Fully Customizable Documents – Add and edit notes and items. β€’ PDF Generation – The completed work order is automatically saved to the downloads folder. β€’ Quick Access – Tap the cell to instantly open the PDF preview. β€’ Sending and Importing Documents β€’ Documents can now be sent via email as a JSON file to another device running the same app. On the receiving device, the JSON file can be imported into the app, automatically inserting the received document so it becomes available for editing. Settings The app offers customization options and purchasing features: β€’ Print Field Configuration – Customize fields displayed in the PDF document. β€’ Enter Your Own Details – Set up issuer information for generated documents. β€’ Ad Removal – Remove ads with a one-time purchase. β€’ Backup and Restore β€’ The Settings menu now includes a backup and restore option. This allows you to export all saved documents and settings into a single file and later restore them from that file. This is useful when switching to a new device or recovering lost data. β€’ These features ensure secure document management and seamless data transfer between devices. With this app, you can quickly and easily perform electrical calculations, manage documents, and access essential reference materials.

About

ONWATT

Features
Read full description

ONWATT Energy is a smart energy management app designed to give you full control over your home battery system. Monitor your energy usage in real-time, optimize when you store and use electricity, and reduce your energy costs effortlessly. Key Features: - Real-time monitoring of battery, solar and grid usage - Smart energy control modes - Backup power insights during outages - Data dashboard with clear energy insights - Easy connection via WiFi Designed for simplicity, built for performance. Take control of your energy with ONWATT.

Screenshots

Electrician's assistant4 screens
ONWATT4 screens

Verdict

The call

The clearest difference is in-app purchases: ONWATT at none against Electrician's assistant's 1. ONWATT also leads on ads (none vs shown). Electrician's assistant's advantage is update cadence (every 2 weeks vs every 4 months). On price, device support and iOS requirement 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. Electrician's assistant sells 1 one-off in-app purchase. ONWATT asks for nothing beyond the download.

UpkeepUpdate frequency

Electrician's assistant ships an update every 2 weeks, ONWATT every 4 months. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard3 real differences Β· 3 level
Electrician's assistant versus ONWATT: the parameters behind the verdict, then further details
ParameterElectrician's assistantONWATT
PriceFreeFree
Update frequencyEvery 2 weeks β€” betterEvery 4 months
AdsYesNo β€” better
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, iPod β€” betteriPhone, iPod
Requires iOS15.614.0 β€” better
Further details β€” not scored
Size43 MB190 MB
Age rating4+4+
DeveloperAlbert PartiAlpha ESS Co., Ltd.

In-app purchases

1 purchases

Electrician's assistant

One-time1
  • Remove Advertising-Electrician$0.99
None

ONWATT

No in-app purchases

Questions

Is Electrician's assistant free?
Electrician's assistant is free to download, with in-app purchases available.
Is ONWATT free?
ONWATT is free to download, with no in-app purchases.
Do Electrician's assistant or ONWATT have ads?
Electrician's assistant shows ads; ONWATT does not.
Which is updated more often, Electrician's assistant or ONWATT?
Electrician's assistant ships an update every 2 weeks, and ONWATT every 4 months. Most recently, Electrician's assistant was updated on October 30, 2026 and ONWATT on November 5, 2026.

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