# Hydrostatic Pressure Calc vs FrackCalc

The clearest difference is price: Hydrostatic Pressure Calc at $2.99 against FrackCalc's $9.99. Hydrostatic Pressure Calc also leads on iOS requirement (13 vs 16.0). FrackCalc's advantage is update cadence (weekly vs every 31 months) and chart position (#180 vs unranked). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Hydrostatic Pressure Calc costs $2.99 and FrackCalc $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Hydrostatic Pressure Calc against 5.0 for FrackCalc. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Hydrostatic Pressure Calc ships an update every 31 months, FrackCalc weekly. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Hydrostatic Pressure Calc | FrackCalc |
| --- | --- | --- |
| Price | **$2.99** | $9.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/hydrostatic-pressure-calc/id1420384357/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/frackcalc/id1574572398/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Weekly** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#180** |
| Size | 1 MB | 14 MB |
| Requires iOS | **13** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nitrio](https://appshunter.io/developer/321121189) | [Moosaa Young](https://appshunter.io/developer/1574572400) |

## What reviewers say

### Hydrostatic Pressure Calc

[App page](https://appshunter.io/ios/app/hydrostatic-pressure-calc/id1420384357)

Quickly calculate hydrostatic pressure at any depth with this physics tool. It offers instant results, supports various units, and displays the relevant formulas for reference. Optimized for ease of use and accuracy.

**Highlights:** Instant hydrostatic pressure calculation, Supports multiple input units, Includes hydrostatic pressure formulas, Results are copyable, High precision up to 16 decimal places, Lightweight and optimized

**Features:** macOS Compatibility

**In-app purchases:** none


### FrackCalc

[App page](https://appshunter.io/ios/app/frackcalc/id1574572398)

**Currently charting:** #180 Top Paid · Utilities (US App Store)

This app provides on-the-go hydraulic fracturing calculations for the oilfield. It helps determine chemical rates, fluid clean-up, proppant amounts, and pump speeds. Includes a unit converter for common oilfield measurements.

**Highlights:** Hydraulic fracturing calculations, Proppant amount and height determination, RPM calculator for pumping speeds, Hydrostatic calculator for proppant-laden slurry, Oilfield unit converter, Pump rate calculation based on transmission curves

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

**In-app purchases:** none


## Frequently asked questions

### Is Hydrostatic Pressure Calc free?

Hydrostatic Pressure Calc costs $2.99, with no in-app purchases.

### Is FrackCalc free?

FrackCalc costs $9.99, with no in-app purchases.

### Which has better reviews, Hydrostatic Pressure Calc or FrackCalc?

Hydrostatic Pressure Calc and FrackCalc are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Hydrostatic Pressure Calc or FrackCalc have ads?

Neither Hydrostatic Pressure Calc nor FrackCalc shows ads.

### Which is updated more often, Hydrostatic Pressure Calc or FrackCalc?

Hydrostatic Pressure Calc ships an update every 31 months, and FrackCalc weekly. Most recently, Hydrostatic Pressure Calc was updated on October 12, 2026 and FrackCalc on October 11, 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.*