# RF vs Jurassic Fuels

The clearest difference is price: Jurassic Fuels at Free against RF's $0.99. RF's advantage is update cadence (every 8 months vs every 33 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Jurassic Fuels is free to download; RF costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RF ships an update every 8 months, Jurassic Fuels every 33 months. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | RF | Jurassic Fuels |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 33 months |
| Size | 6 MB | 44 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Julien Geissbuehler](https://appshunter.io/developer/1762554076) | [Destwin LLC](https://appshunter.io/developer/1359900128) |

## What reviewers say

### RF

[App page](https://appshunter.io/ios/app/rf-calc/id647697327)

**Features:** macOS Compatibility

**In-app purchases:** none


### Jurassic Fuels

[App page](https://appshunter.io/ios/app/jurassic-fuels/id6474206571)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RF free?

RF costs $0.99, with no in-app purchases.

### Is Jurassic Fuels free?

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

### Do RF or Jurassic Fuels have ads?

Neither RF nor Jurassic Fuels shows ads.

### Which is updated more often, RF or Jurassic Fuels?

RF ships an update every 8 months, and Jurassic Fuels every 33 months. Most recently, RF was updated on October 7, 2026 and Jurassic Fuels on October 1, 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.*