# Fuel Uplift vs Density Converter

The clearest difference is update cadence: Fuel Uplift at every 3 months against Density Converter's every 38 months. Fuel Uplift also leads on chart position (#189 vs unranked). Density Converter's advantage is price ($1.99 vs $2.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Fuel Uplift costs $2.99 and Density Converter $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Fuel Uplift ships an update every 3 months, Density Converter every 38 months. The most recent releases landed on September 6, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Fuel Uplift | Density Converter |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[2.5 (6 ratings)](https://appshunter.io/ios/app/fuel-uplift/id346165774/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 42.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 38 months |
| Monetization | Paid | — |
| Best chart rank | **#189** | — |
| Size | 2 MB | 0 MB |
| Requires iOS | **12.0** | 13.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Gehringer](https://appshunter.io/developer/346165777) | [Anna Filobok](https://appshunter.io/developer/1613515832) |

## What reviewers say

### Fuel Uplift

[App page](https://appshunter.io/ios/app/fuel-uplift/id346165774)

**Currently charting:** #189 Top Paid · Utilities (US App Store)

This utility app assists pilots in calculating fuel uplift. It computes the difference between indicated fuel and the uplifted amount in kilograms and pounds, also converting various volume units and densities into mass.

**Highlights:** Calculate fuel uplift in kg and lbs, Determine difference from indicated fuel, Convert litres to kg/lbs, Convert US gallons to kg/lbs, Convert Imperial gallons to kg/lbs

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

**In-app purchases:** none


### Density Converter

[App page](https://appshunter.io/ios/app/density-converter/id1539270045)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fuel Uplift free?

Fuel Uplift costs $2.99, with no in-app purchases.

### Is Density Converter free?

Density Converter costs $1.99, with no in-app purchases.

### Do Fuel Uplift or Density Converter have ads?

Neither Fuel Uplift nor Density Converter shows ads.

### Which is updated more often, Fuel Uplift or Density Converter?

Fuel Uplift ships an update every 3 months, and Density Converter every 38 months. Most recently, Fuel Uplift was updated on September 6, 2026 and Density Converter on September 17, 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.*