# TDH Calculator vs UnitsConv

The clearest difference is iOS requirement: TDH Calculator at 7.0 against UnitsConv's 12.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | TDH Calculator | UnitsConv |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (3 ratings)](https://appshunter.io/ios/app/unitsconv/id1291109803/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 months |
| Monetization | — | Free |
| Size | 1 MB | 8 MB |
| Requires iOS | **7.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jeffrey Iverson](https://appshunter.io/developer/880898146) | [john selverian](https://appshunter.io/developer/1291109802) |

## What reviewers say

### TDH Calculator

[App page](https://appshunter.io/ios/app/tdh-calculator/id880898143)

**Features:** macOS Compatibility

**In-app purchases:** none


### UnitsConv

[App page](https://appshunter.io/ios/app/unitsconv/id1291109803)

This app provides conversion factors for 28 common properties used in multiphysics simulations and finite element analysis. It's a free tool designed for engineers and researchers working with complex physical models.

**Highlights:** 28 conversion properties, Multiphysics simulation support, Finite element analysis (FEA) focus, Free to use, Supports iPhone, iPad, and iPod

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TDH Calculator free?

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

### Is UnitsConv free?

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

### Do TDH Calculator or UnitsConv have ads?

Neither TDH Calculator nor UnitsConv shows ads.

---

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