# Thermistor Tool vs Digital Electronics Pro

The clearest difference is price: Thermistor Tool at Free against Digital Electronics Pro's $4.99. Thermistor Tool also leads on iOS requirement (13.0 vs 16.0). Digital Electronics Pro's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 10 months). On ads and device support there is nothing between them.

Thermistor Tool is free to download; Digital Electronics Pro costs $4.99 up front. Thermistor Tool sells 1 one-off in-app purchase. Digital Electronics Pro asks for nothing beyond the download.

Thermistor Tool ships an update every 10 months, Digital Electronics Pro every 2 months. The most recent releases landed on June 4, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | Thermistor Tool | Digital Electronics Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/thermistor-tool/id1641042330/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 3 MB | 21 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Siu Yuen Ho](https://appshunter.io/developer/814088527) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## What reviewers say

### Thermistor Tool

[App page](https://appshunter.io/ios/app/thermistor-tool/id1641042330)

This application serves as a calculator for thermistors, supporting both Beta and Steinhart-Hart models. It facilitates conversions between temperature and resistance, and visualizes this relationship with a temperature-resistance graph. Ideal for hobbyists, students, and engineers.

**Highlights:** Beta model support, Steinhart-Hart model support, Temperature to resistance conversion, Resistance to temperature conversion, Temperature-resistance graph visualization

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro feature | $1.99 | one-time |


### Digital Electronics Pro

[App page](https://appshunter.io/ios/app/digital-electronics-pro/id6478407802)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Thermistor Tool free?

Thermistor Tool is free to download, with in-app purchases available.

### Is Digital Electronics Pro free?

Digital Electronics Pro costs $4.99, with no in-app purchases.

### Do Thermistor Tool or Digital Electronics Pro have ads?

Neither Thermistor Tool nor Digital Electronics Pro shows ads.

### Which is updated more often, Thermistor Tool or Digital Electronics Pro?

Thermistor Tool ships an update every 10 months, and Digital Electronics Pro every 2 months. Most recently, Thermistor Tool was updated on June 4, 2026 and Digital Electronics Pro on September 25, 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.*