# Adiabatic Equation Calculator vs CPD Progress Tracker

The clearest difference is price: CPD Progress Tracker at Free against Adiabatic Equation Calculator's $7.99. CPD Progress Tracker also leads on update cadence (every 2 months vs every 19 months). Adiabatic Equation Calculator's advantage is iOS requirement (13.0 vs 15.6). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

CPD Progress Tracker 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.

Adiabatic Equation Calculator ships an update every 19 months, CPD Progress Tracker every 2 months. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Adiabatic Equation Calculator | CPD Progress Tracker |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 2 MB | 29 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pro Certs Software Ltd](https://appshunter.io/developer/444429696) | [BENJAMIN MATTHEW BAKER](https://appshunter.io/developer/1854215304) |

## What reviewers say

### 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


### CPD Progress Tracker

[App page](https://appshunter.io/ios/app/cpd-progress-tracker/id6755496266)

Easily log and manage your Continuing Professional Development activities on the go. Capture training, courses, and professional learning with quick entry, QR code scanning, and file attachments. Generate professional reports for audits and career reviews.

**Highlights:** Scan QR codes for auto-record creation, Attach photos, notes, and files as evidence, Multi-profession tracking with separate logs, Export professional PDF reports and ZIP bundles, Fast entry system with optional voice input, Set and track weekly, monthly, and annual targets

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

**In-app purchases:** none


## Frequently asked questions

### Is Adiabatic Equation Calculator free?

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

### Is CPD Progress Tracker free?

CPD Progress Tracker is free to download, with no in-app purchases.

### Do Adiabatic Equation Calculator or CPD Progress Tracker have ads?

Neither Adiabatic Equation Calculator nor CPD Progress Tracker shows ads.

### Which is updated more often, Adiabatic Equation Calculator or CPD Progress Tracker?

Adiabatic Equation Calculator ships an update every 19 months, and CPD Progress Tracker every 2 months. Most recently, Adiabatic Equation Calculator was updated on October 14, 2026 and CPD Progress Tracker on October 15, 2026.

---

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