# Oilcalcs vs Digital Bunker

The clearest difference is price: Digital Bunker at Free against Oilcalcs's $9.99. Digital Bunker also leads on update cadence (every 2 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Digital Bunker is free to download; Oilcalcs costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Oilcalcs ships an update every 4 months, Digital Bunker every 2 weeks. The most recent releases landed on October 26, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Oilcalcs | Digital Bunker |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.8 (46 ratings)](https://appshunter.io/ios/app/oilcalcs/id612283154/reviews)** | — |
| Number of ratings | **46** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | Paid | — |
| Size | 2 MB | 43 MB |
| Requires iOS | **15.6** | 16.1 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ron mooring](https://appshunter.io/developer/612283157) | [Vortex Development Group](https://appshunter.io/developer/1153965191) |

## What reviewers say

### Oilcalcs

[App page](https://appshunter.io/ios/app/oilcalcs/id612283154)

This app provides comprehensive calculations for professionals in the oil and gas industry. It offers versatile tools for volume and weight conversions, density corrections, and blending calculations, supporting various industry tables and units.

**Highlights:** Volume and weight conversions, Density correction for special applications, Viscosity, pour point, and flash point blender, LNG and LPG density calculators, Support for ASTM tables and units, Data export to database

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

**In-app purchases:** none


### Digital Bunker

[App page](https://appshunter.io/ios/app/digital-bunker/id1153965192)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Oilcalcs free?

Oilcalcs costs $9.99, with no in-app purchases.

### Is Digital Bunker free?

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

### Do Oilcalcs or Digital Bunker have ads?

Neither Oilcalcs nor Digital Bunker shows ads.

### Which is updated more often, Oilcalcs or Digital Bunker?

Oilcalcs ships an update every 4 months, and Digital Bunker every 2 weeks. Most recently, Oilcalcs was updated on October 26, 2026 and Digital Bunker on October 5, 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.*