# Dr. DE vs SANBOK

The clearest difference is review sentiment: SANBOK at 100% against Dr. DE's 56%. SANBOK also leads on iOS requirement (13.4 vs 15.6). Dr. DE's advantage is update cadence (every 3 months vs every 6 months). 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.

Dr. DE ships an update every 3 months, SANBOK every 6 months. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Dr. DE | SANBOK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (15 ratings)](https://appshunter.io/ios/app/dr-de/id954796004/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 55.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 6 months |
| Monetization | Free | Free |
| Size | 33 MB | 9 MB |
| Requires iOS | 15.6 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Pegasus Vertex, Inc.](https://appshunter.io/developer/954796003) | [KUWAIT OIL COMPANY K.S.C. CLOSED](https://appshunter.io/developer/1076550107) |

## What reviewers say

### Dr. DE

[App page](https://appshunter.io/ios/app/dr-de/id954796004)

This mobile toolbox simplifies complex drilling engineering calculations. It offers a comprehensive suite of 29 functions across 11 categories, eliminating the need for handbooks and improving efficiency for engineers and technicians.

**Highlights:** 29 drilling engineering functions, 11 functional groups, Bit hydraulics calculations, Hole cleaning analysis, Well control solutions, Unit conversion tools, Tank capacity calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### SANBOK

[App page](https://appshunter.io/ios/app/sanbok/id1439309679)

Access company goals, objectives, and general information. Review ship vetting requirements and submit, monitor, edit, or delete screening requests. Search for vessels by IMO number.

**Highlights:** Company goals and objectives, Ship vetting requirements, Submit screening requests, Monitor request status, Edit/delete screening requests, Search vessel by IMO number

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dr. DE free?

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

### Is SANBOK free?

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

### Do Dr. DE or SANBOK have ads?

Neither Dr. DE nor SANBOK shows ads.

### Which is updated more often, Dr. DE or SANBOK?

Dr. DE ships an update every 3 months, and SANBOK every 6 months. Most recently, Dr. DE was updated on October 24, 2026 and SANBOK on October 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.*