# TRUCHECK vs Adiabatic Equation Calculator

The clearest difference is price: TRUCHECK at Free against Adiabatic Equation Calculator's $7.99. TRUCHECK also leads on update cadence (every 3 weeks vs every 19 months). Adiabatic Equation Calculator's advantage is iOS requirement (13.0 vs 16.4). On ads, in-app purchases and device support there is nothing between them.

TRUCHECK is free to download; Adiabatic Equation Calculator costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TRUCHECK ships an update every 3 weeks, Adiabatic Equation Calculator every 19 months. Both last shipped on September 16, 2026.

## The numbers

| Metric | TRUCHECK | Adiabatic Equation Calculator |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 19 months |
| Monetization | — | Paid |
| Size | 75 MB | 2 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [ELULA CLOUD (PTY) LTD](https://appshunter.io/developer/1834326299) | [Pro Certs Software Ltd](https://appshunter.io/developer/444429696) |

## What reviewers say

### TRUCHECK

[App page](https://appshunter.io/ios/app/trucheck/id1496586007)

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

**In-app purchases:** none


### Adiabatic Equation Calculator

[App page](https://appshunter.io/ios/app/adiabatic-equation-calculator/id1511222749)

Calculates minimum circuit protective conductor and earth conductor sizes using the adiabatic equation. Input voltage, Zs value, protective device, conductor type, and material to find the minimum CSA in mm².

**Highlights:** Calculate minimum CPC and earth conductor sizes, Uses adiabatic equation formula, Input voltage and Zs value, Select protective device and rating, Select conductor type and material, Provides results in mm²

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

**In-app purchases:** none


## Frequently asked questions

### Is TRUCHECK free?

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

### Is Adiabatic Equation Calculator free?

Adiabatic Equation Calculator costs $7.99, with no in-app purchases.

### Do TRUCHECK or Adiabatic Equation Calculator have ads?

Neither TRUCHECK nor Adiabatic Equation Calculator shows ads.

### Which is updated more often, TRUCHECK or Adiabatic Equation Calculator?

TRUCHECK ships an update every 3 weeks, and Adiabatic Equation Calculator every 19 months. Most recently, TRUCHECK was updated on September 16, 2026 and Adiabatic Equation Calculator on September 16, 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.*