# WattGuru — Electrical tools and meters

> Electrical tools and meters (iPhone/iPad app by Michael Caklec.)

- Source: https://appshunter.io/ios/app/wattguru/id6741865891 (this page in markdown: same URL + `.md`)
- Developer: [Michael Caklec](https://appshunter.io/developer/974662614)
- Category: Utilities, Reference
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.6 · 9 MB
- Languages: American English, Bulgarian, Croatian, Czech, Danish, Dutch, Estonian, Finnish, French (France), German (Germany) and 14 more
- Released: 2026-07-28
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/wattguru/id6741865891/reviews.md

## What is WattGuru?

WattGuru turns your iPhone, iPad and Mac into a practical toolbox for electricity and energy. Calculate values, document meter readings and save calculation cases clearly – without a WattGuru account, advertising or tracking.

ELECTRICAL TOOLS

- Ohm's law from any two known values
- Power and current for DC, single-phase AC and three-phase AC
- Cable cross-section, voltage drop and maximum cable length
- Energy, runtime, battery charging and consumption costs
- Series and parallel resistor networks plus voltage dividers
- Conversion of electrical units

METERS AND COSTS

Record household, sub, appliance, generation and storage meters. Log standard and off-peak readings, follow consumption and costs in charts, and exchange your own data using CSV when needed.

PROJECTS AND REFERENCE

Save calculator results together with inputs and assumptions in projects. The built-in reference explains voltage, current, power, energy, cables, protective measures and safe measurement in clear language.

PRIVATE AND AVAILABLE ACROSS DEVICES

Your data stays on your device by default. Optional iCloud sync keeps meters, tariffs and projects in step across your own Apple devices. cgNetsphere does not receive this content. WattGuru includes no advertising, tracking or analytics services.

WattGuru is a calculation, planning and documentation aid. Work on electrical installations must be carried out by qualified people. Applicable standards, protective measures and manufacturer instructions always take precedence.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| WattGuru Full Version | $3.99 | one-time |



## Version history (last 2 releases)

### 1.0.1 — 2026-08-11

This correctness update improves how WattGuru evaluates different meter types and measurement directions. Overlapping meters are no longer added together in a potentially misleading total. Tariffs and currencies are handled more consistently, while projections and states with insufficient data are clearer and more precise. The update also includes smaller display, stability and support improvements.

### 1.0 — 2026-07-28

No release notes.

## More apps by Michael Caklec

- [Team Presence](https://appshunter.io/ios/app/team-presence/id1212135860)
- [My Lend Book](https://appshunter.io/ios/app/my-lend-book/id1435701729)
- [Tankbuch Pro](https://appshunter.io/ios/app/tankbuch-pro/id1463290081)
- [Fine Calculator](https://appshunter.io/ios/app/fine-calculator/id6738927779)
- [Folioza](https://appshunter.io/ios/app/folioza/id6776319560)

All apps by Michael Caklec: https://appshunter.io/developer/974662614

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*