eFuelConverter vs AviCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eFuelConverter
This app calculates and converts aviation fuel quantities for JetA1 and AvGAS. It uses specific conversion factors for each fuel type to ensure accurate measurements.
- JetA1 fuel conversion
- AvGAS fuel conversion
- Customizable conversion factors
- Supports lbs/ltr measurements
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Aviation fuel calculator and converter for JetA1 and AvGAS fuel. The conversion is based on Jet A1 1.7595 lbs/ltr, AvGAS 100LL 1.58 lbs/ltr.
AviCalc
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Calculate your duty times, fuel uplifts easy and fast. To use the app, read the full text of instructions. Purpose of AviationCalc: Flight Duty Period Page: AviationCalc helps you calculate Maximum Duty Periods and Total Duty Periods, correcting for time zones from the start of duty location and end of duty time zone. Also, it will search maximum flight duty period for acclimatised crew for Hong Kong CAD. Fuel Uplift Page: AviationCalc helps you calculate fuel uplift in Kg, USG and Litres to help you calculate your data fast and easy. ***Disclamer*** The information this app presents should not be used as primary tool for your calculations. Allowing the app access your location will only allow the app to help get better precision on which Time Zone to use. Click on info button (bottom right) to pull up how-to-use alerts or whenever you want to change the regulatory institution or choose a different time after flight duty for total duty period calculation. If there is something wrong going on, tap the screen again. Please leave your review.
Screenshots
Verdict
The clearest difference is price: AviCalc at Free against eFuelConverter's $0.99. AviCalc also leads on update cadence (every 3 weeks vs every 15 months). eFuelConverter's advantage is iOS requirement (8.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
AviCalc is free to download; eFuelConverter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
eFuelConverter ships an update every 15 months, AviCalc every 3 weeks. The most recent releases landed on September 21, 2026 and September 19, 2026 respectively.
| Parameter | eFuelConverter | AviCalc |
|---|---|---|
| Price | $0.99 | Free — better |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 15 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | PH-Informatik | Aldo Mendes Martins |
In-app purchases
eFuelConverter
No in-app purchases
AviCalc
No in-app purchases
Questions
Is eFuelConverter free?
Is AviCalc free?
Do eFuelConverter or AviCalc have ads?
Which is updated more often, eFuelConverter or AviCalc?
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