Comparison

fuelTool vs HOTs.

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

fuelTool

This aviation tool simplifies fuel uplift and weight calculations, allowing users to determine limiting mass, allowable fuel, or payload. It supports various unit conversions and can store aircraft data for faster calculations.

Highlights
  • Fuel uplift calculation (LBS/KG to LTR)
  • Split fuel calculation for left & right tanks
  • Weight calculation for limiting mass, fuel, or payload
  • Crosswind calculation with METAR data
  • Aircraft data management (add, edit, delete)
  • Downloadable company aircraft data
Features
Read full description

fuelTool is a fuel uplift and (limiting) weight calculator and can be used in general by any one in aviation to calculate limiting mass very easily. If you or your company supplies information about the DOW, DOI and limiting masses, then your aircrafts can be downloaded into the app, which makes the calculating even faster, because all the relevant figures are already in place! Features: - Calculate refueling from LBS->LTR or KG->LTR, and split Left & Right Tanks - Calculate with fuel density figures (after re-feuling) - Weight calculation (determine limiting mass, allowable fuel or payload) - Crosswind calculation, with actual METAR info (if you have an internet connection) - Maintain list of aircrafts (add/edit/delete) - Download your company's aircraft data (if made available to me)

About

HOTs.

This aviation tool provides pilots with critical operational data and real-time hazard monitoring. Visualize global weather and turbulence reports on an interactive 3D globe for enhanced situational awareness.

Highlights
  • Real-time hazard monitoring
  • Interactive 3D globe visualization
  • SIGMETs, PIREPs, AIREPs
  • Turbulence reports
  • High-level hazard overlays
  • Pilot-focused interface
Read full description

HOTs is an operational flight intelligence platform built for professional pilots. Originally designed as a winter operations holdover calculator, HOTs has evolved into a comprehensive aviation hazard and situational awareness tool — delivering critical operational data in a clean, pilot-focused interface. Monitor aviation hazards worldwide through an interactive 3D globe: • SIGMETs • PIREPs • AIREPs • Turbulence reports • High-level hazard overlays See threats at cruise levels, oceanic routes, and continental airspace in real time. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://lagary.com/one/privacy-policy.html

Screenshots

fuelTool4 screens
HOTs.4 screens

Verdict

The call

The clearest difference is review sentiment: HOTs. at 100% against fuelTool's 50%. HOTs. also leads on update cadence (every 5 days vs every 3 months). fuelTool's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 18.6). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. HOTs. sells 1 in-app purchase, starting at $9.99 per year. fuelTool asks for nothing beyond the download.

UpkeepUpdate frequency

fuelTool ships an update every 3 months, HOTs. every 5 days. The most recent releases landed on November 1, 2026 and November 4, 2026 respectively.

Scorecard5 real differences · 5 level
fuelTool versus HOTs.: the parameters behind the verdict, then further details
ParameterfuelToolHOTs.
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better18.6
Further details — not scored
Size2 MB74 MB
Age rating4+4+
DeveloperMartin GroesbeekLagary Systems, Inc

Customer experience

fuelTool

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral50.0%
Negative0.0%

HOTs.

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

fuelTool

No in-app purchases

1 purchases

HOTs.

Subscriptions1
  • HOTs Full Access3 Days trial$9.991 Year

Questions

Is fuelTool free?
fuelTool is free to download, with no in-app purchases.
Is HOTs. free?
HOTs. is free to download, with in-app purchases available.
Do fuelTool or HOTs. have ads?
Neither fuelTool nor HOTs. shows ads.
Which is updated more often, fuelTool or HOTs.?
fuelTool ships an update every 3 months, and HOTs. every 5 days. Most recently, fuelTool was updated on November 1, 2026 and HOTs. on November 4, 2026.

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