# DR Chemical vs PRIME _

The clearest difference is update cadence: DR Chemical at every 2 weeks against PRIME _'s every 4 months. 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.

DR Chemical ships an update every 2 weeks, PRIME _ every 4 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | DR Chemical | PRIME _ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (3 ratings)](https://appshunter.io/ios/app/dr-chemical/id1607536148/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 36 MB | 90 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [GROUP M7, INC.](https://appshunter.io/developer/1607536150) | [Lukas Mirejovsky](https://appshunter.io/developer/1758295868) |

## What reviewers say

### 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


### PRIME _

[App page](https://appshunter.io/ios/app/prime/id6557068660)

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

**In-app purchases:** none


## Frequently asked questions

### Is DR Chemical free?

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

### Is PRIME _ free?

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

### Do DR Chemical or PRIME _ have ads?

Neither DR Chemical nor PRIME _ shows ads.

### Which is updated more often, DR Chemical or PRIME _?

DR Chemical ships an update every 2 weeks, and PRIME _ every 4 months. Most recently, DR Chemical was updated on November 3, 2026 and PRIME _ on November 8, 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.*