# DistPad vs Oil density

The clearest difference is rating: DistPad at 3.0 against Oil density's 1.0. DistPad also leads on in-app purchases (none vs 2) and update cadence (every 3 months vs every 47 months). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Oil density sells 2 one-off in-app purchases. DistPad asks for nothing beyond the download.

DistPad holds the better App Store score, 3.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

DistPad ships an update every 3 months, Oil density every 47 months. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | DistPad | Oil density |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/distpad/id602147198/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/oil-density/id1641733273/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 47 months |
| Monetization | Free | Free |
| Size | 22 MB | 7 MB |
| Requires iOS | **12.1** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [ORBIS BV](https://appshunter.io/developer/602147201) | [昆 张](https://appshunter.io/developer/517645105) |

## What reviewers say

### DistPad

[App page](https://appshunter.io/ios/app/distpad/id602147198)

Control atmospheric distillation analyzers wirelessly for petroleum and petrochemical labs. Monitor sample status, view results in tables and graphs, and export data to LIMS or printers. Easily set up measurement programs and customize reporting formats.

**Highlights:** Wireless analyzer control, Real-time results viewing, Tabular and graphical reporting, Export to LIMS via FTP, Print to Zebra thermal printer, Customizable reporting formats, Sample parameter adjustment

**Features:** macOS Compatibility

**In-app purchases:** none


### Oil density

[App page](https://appshunter.io/ios/app/oil-density/id1641733273)

This tool calculates the standard density of oil products based on measured apparent density. It automatically queries density tables and computes volume correction factors for accurate standard volume and mass calculations. Improve efficiency and accuracy compared to manual methods.

**Highlights:** Calculates standard oil density, Queries petroleum density tables, Computes volume correction factor (VCF), Calculates standard volume and mass, Adheres to GB/T 1885-1998 national standard

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly card | $2.99 | one-time |
| Lifetime Card | $8.99 | one-time |


## Frequently asked questions

### Is DistPad free?

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

### Is Oil density free?

Oil density is free to download, with in-app purchases available.

### Which has better reviews, DistPad or Oil density?

DistPad is rated higher. DistPad averages 3.0 out of 5 from 2 ratings, while Oil density averages 1.0 from 1 ratings.

### Do DistPad or Oil density have ads?

Neither DistPad nor Oil density shows ads.

### Which is updated more often, DistPad or Oil density?

DistPad ships an update every 3 months, and Oil density every 47 months. Most recently, DistPad was updated on October 15, 2026 and Oil density on October 9, 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.*