# Quick Calc Hydraulics vs WellDrive

Quick Calc Hydraulics and WellDrive both sit at 4.9 stars, but that hides the real split: 100% of WellDrive's written reviews are positive against 89% of Quick Calc Hydraulics's. Quick Calc Hydraulics's advantage is ratings volume (9 vs 2) and iOS requirement (9.3 vs 11.0). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for Quick Calc Hydraulics against 5.0 for WellDrive. Both are backed by a comparable volume of ratings — 9 and 2 respectively. Written reviews are what separate them: 89% of Quick Calc Hydraulics's written reviews are positive against 100% of WellDrive's.

Quick Calc Hydraulics ships an update every 7 months, WellDrive every 9 months. The most recent releases landed on June 5, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Quick Calc Hydraulics | WellDrive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (9 ratings)](https://appshunter.io/ios/app/quick-calc-hydraulics/id404002035/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/welldrive/id869205638/reviews)** |
| Number of ratings | **9** | 2 |
| Positive reviews | 88.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 9 months |
| Monetization | Free | Free |
| Size | 88 MB | 44 MB |
| Requires iOS | **9.3** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Schlumberger Technology Corporation](https://appshunter.io/developer/380098290) | [WellDrive](https://appshunter.io/developer/1312911913) |

## What reviewers say

### Quick Calc Hydraulics

[App page](https://appshunter.io/ios/app/quick-calc-hydraulics/id404002035)

This app calculates hydraulic horsepower, jet velocity, and impact forces at a jet nozzle orifice for earth-boring operations. Users input fluid density, flow rates, TFA, and bit diameter to get results for conventional drilling fluids. Calculated data can be shared with contacts.

**Highlights:** Hydraulic horsepower calculation, Jet velocity calculation, Impact force calculation, Input fluid density, flow rates, TFA, and bit diameter, Share results with contacts

**Features:** macOS Compatibility

**In-app purchases:** none


### WellDrive

[App page](https://appshunter.io/ios/app/welldrive/id869205638)

Access and manage well-related documents and files directly from your mobile device. Browse entries, download necessary files, and upload new documents or edits made in other applications.

**Highlights:** Browse wells, entries, and files, Download documents, Upload files, Edit and upload documents

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Quick Calc Hydraulics free?

Quick Calc Hydraulics is free to download, with no in-app purchases.

### Is WellDrive free?

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

### Which has better reviews, Quick Calc Hydraulics or WellDrive?

WellDrive is rated higher. Quick Calc Hydraulics averages 4.9 out of 5 from 9 ratings, while WellDrive averages 5.0 from 2 ratings.

### Do Quick Calc Hydraulics or WellDrive have ads?

Neither Quick Calc Hydraulics nor WellDrive shows ads.

### Which is updated more often, Quick Calc Hydraulics or WellDrive?

Quick Calc Hydraulics ships an update every 7 months, and WellDrive every 9 months. Most recently, Quick Calc Hydraulics was updated on June 5, 2026 and WellDrive on September 16, 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.*