# Engineering Forms vs Electrical & Solar Calculator

The clearest difference is review sentiment: Engineering Forms at 100% against Electrical & Solar Calculator's 0%. Engineering Forms also leads on in-app purchases (none vs 1) and ads (none vs shown). Electrical & Solar Calculator's advantage is update cadence (weekly vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Electrical & Solar Calculator sells 1 one-off in-app purchase. Engineering Forms asks for nothing beyond the download.

Engineering Forms ships an update every 3 months, Electrical & Solar Calculator weekly. The most recent releases landed on May 24, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Engineering Forms | Electrical & Solar Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 19 MB | 32 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [ITECH PROJECTS LTD](https://appshunter.io/developer/1411332906) | [Anas Abubakar](https://appshunter.io/developer/1581534101) |

## What reviewers say

### Engineering Forms

[App page](https://appshunter.io/ios/app/engineering-forms/id6479765443)

Streamline project management, contract handling, and validation processes for engineers. Generate detailed reports directly from your mobile device and sync seamlessly with a web portal for continued work on your laptop. Customize forms or build your own to suit various engineering trades.

**Highlights:** PPM contract management, Project and validation tracking, In-app report generation, Web portal synchronization, Customizable form builder, User and team management, Secure data sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### Electrical & Solar Calculator

[App page](https://appshunter.io/ios/app/electrical-and-solar-calculator/id6743133160)

This app provides a suite of tools for electricians, engineers, and solar installers to quickly solve common electrical design and installation problems. It covers wire sizing, voltage drop, circuit breaker sizing, motor calculations, and solar system planning.

**Highlights:** Resistor, capacitor, and inductor circuit calculations, Wire sizing and voltage drop analysis, Circuit breaker and transformer sizing, Motor wiring and power factor correction, Solar system planning tools, Customizable units (metric/imperial)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro ID | $2.99 | one-time |


## Frequently asked questions

### Is Engineering Forms free?

Engineering Forms is free to download, with no in-app purchases.

### Is Electrical & Solar Calculator free?

Electrical & Solar Calculator is free to download, with in-app purchases available.

### Do Engineering Forms or Electrical & Solar Calculator have ads?

Electrical & Solar Calculator shows ads; Engineering Forms does not.

### Which is updated more often, Engineering Forms or Electrical & Solar Calculator?

Engineering Forms ships an update every 3 months, and Electrical & Solar Calculator weekly. Most recently, Engineering Forms was updated on May 24, 2026 and Electrical & Solar Calculator on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*