# EngKit

> EngKit (iPhone/iPad app by Rodrigo Vivas.)

- Source: https://appshunter.io/ios/app/engkit/id6813992942 (this page in markdown: same URL + `.md`)
- Developer: [Rodrigo Vivas](https://appshunter.io/developer/6813992944)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.1 · 4 MB
- Languages: American English, European Spanish
- Released: 2026-09-26
- Data updated: 2026-09-28
- User reviews in markdown: https://appshunter.io/ios/app/engkit/id6813992942/reviews.md

## What is EngKit?

EngKit is a focused toolkit of engineering and math calculators, built for students, hobbyists and professionals who want fast, accurate tools without clutter.
FREE MODULES
• Resistor Code — decode resistance from color bands, convert between SI units
• Ohm's Law — calculate voltage, current and resistance interactively
• LED Resistor Calculator — find the right series resistor for any LED and supply voltage
• Voltage Divider — design resistor voltage dividers for any target output
• Resistor Network — equivalent resistance for series and parallel circuits
• Matrix Calculator — add and multiply matrices up to 10×10
• Graphing Calculator — plot and explore math functions with pan and zoom
• Unit Converter — convert between 14 categories: length, mass, temperature and more
PRO MODULES (one-time unlock)
• Complex Numbers — add, subtract, multiply and divide in rectangular or polar form
• Capacitor Code — decode capacitance from EIA 3-digit codes and tolerance letters
• Equation Solver — solve linear, quadratic and 2×2 systems of equations
No subscriptions. No ads. Pay once for Pro and keep every current and future module.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Unlock | $6.99 | one-time |



## Version history (last 1 release)

### 1.0.0 — 2026-09-26

No release notes.

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*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 2026-09-28.*