# TDH Calculator vs Pump Calculator

The clearest difference is price: TDH Calculator at Free against Pump Calculator's $2.99. TDH Calculator also leads on iOS requirement (7.0 vs 16.1). On ads, in-app purchases and device support there is nothing between them.

TDH Calculator is free to download; Pump Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | TDH Calculator | Pump Calculator |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/pump-calculator/id1487084383/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 41 months |
| Monetization | — | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | **7.0** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jeffrey Iverson](https://appshunter.io/developer/880898146) | [Imran Pinjara](https://appshunter.io/developer/1484488781) |

## What reviewers say

### TDH Calculator

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Pump Calculator

[App page](https://appshunter.io/ios/app/pump-calculator/id1487084383)

Calculate pump power requirements quickly and easily. This utility app features calculators for pump power, flow rate, and head, based on centrifugal pump principles. It's designed for engineers needing to determine hydraulic, shaft, and motor power.

**Highlights:** Pump Power Calculator, Pump Flow Rate Calculator, Pump Head Calculator, Hydraulic Power Calculation, Shaft Power Calculation, Motor Power Calculation

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

**In-app purchases:** none


## Frequently asked questions

### Is TDH Calculator free?

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

### Is Pump Calculator free?

Pump Calculator costs $2.99, with no in-app purchases.

### Do TDH Calculator or Pump Calculator have ads?

Neither TDH Calculator nor Pump Calculator shows ads.

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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.*