# MUDSheet vs DR Chemical

The clearest difference is rating: MUDSheet at 5.0 against DR Chemical's 4.7. MUDSheet also leads on iOS requirement (9.0 vs 16.6). DR Chemical's advantage is update cadence (every 2 weeks vs every 2 months) and ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

MUDSheet holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

MUDSheet ships an update every 2 months, DR Chemical every 2 weeks. The most recent releases landed on September 29, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | MUDSheet | DR Chemical |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mudsheet/id1510513381/reviews)** | [4.7 (3 ratings)](https://appshunter.io/ios/app/dr-chemical/id1607536148/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 18 MB | 36 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Pegasus Vertex, Inc.](https://appshunter.io/developer/954796003) | [GROUP M7, INC.](https://appshunter.io/developer/1607536150) |

## What reviewers say

### MUDSheet

[App page](https://appshunter.io/ios/app/mudsheet/id1510513381)

This app provides essential calculations and data for mud engineering. It distills critical information from various engineering resources into a convenient tool for mud and drilling engineers, offering quick access to equations and chemical formulas.

**Highlights:** Essential mud engineering calculations, Quick access to drilling equations, Chemical formulas and atomic table, Unit conversion and setup exchange, Input data validation, Multiple table references

**Features:** macOS Compatibility

**In-app purchases:** none


### DR Chemical

[App page](https://appshunter.io/ios/app/dr-chemical/id1607536148)

This reference guide provides essential information, formulas, and calculators for HDD, mining, and water well drilling professionals. It simplifies job tasks, enhancing efficiency and safety by offering easy access to product details and calculations.

**Highlights:** DrillRite Chem product information, Reference materials, Calculators for drilling crews, HDD, mining, and water well drilling focus, Job efficiency and safety enhancement

**In-app purchases:** none


## Frequently asked questions

### Is MUDSheet free?

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

### Is DR Chemical free?

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

### Which has better reviews, MUDSheet or DR Chemical?

MUDSheet is rated higher. MUDSheet averages 5.0 out of 5 from 1 ratings, while DR Chemical averages 4.7 from 3 ratings.

### Do MUDSheet or DR Chemical have ads?

Neither MUDSheet nor DR Chemical shows ads.

### Which is updated more often, MUDSheet or DR Chemical?

MUDSheet ships an update every 2 months, and DR Chemical every 2 weeks. Most recently, MUDSheet was updated on September 29, 2026 and DR Chemical on October 21, 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.*