Comparison

Radar Performance vs FlyHJ Sync

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

Head to head
About

Radar Performance

This application calculates the geometry of aircraft weather radar beams relative to Earth, the freezing level, and the "bright band" for optimal weather detection. It identifies areas on the radar display where the beam is too high or low for effective weather detection and highlights potential ground returns.

Highlights
  • Calculates weather radar beam geometry
  • Considers Earth and freezing level
  • Identifies optimal detection altitudes
  • Shows areas of ineffective beam coverage
  • Highlights potential ground returns
  • Supports various radar models
Features
Read full description

Radar Performance calculates the geometry of aircraft weather radar beams with respect to the earth, the freezing level, and the band of altitudes that provide the maximum weather radar returns (the "bright band"). It also shows the areas on the radar display where the beam is too high or low to effectively detect active weather and areas where you may see ground returns. Radar Performance also includes an Overfly mode for confirming that the tops of lower-level convective weather remain safely below your aircraft. You choose a safe clearance altitude and a tactical range, and the app calculates the radar tilt at which the bottom of the beam just reaches that altitude at that range. With this tilt set, any weather returns indicate that the tops have penetrated your safety margin, so going around the weather is advised. Overfly mode is available at aircraft altitudes of 15,000 ft and above, and is inspired by Tom McGrath's "Snowplow" technique. Radar Performance supports a variety of weather radar models as well as a "generic" model. It is not specific to any aircraft type.

About

FlyHJ Sync

Read full description

**FlyHJ Sync** - Transfer aircraft data from your HondaJet's Garmin G3000 SD card directly to FlyHJ servers using your iPhone or iPad. **For HondaJet Operators Only** Requires an active FlyHJ aircraft support subscription. Streamline your monthly CMC data submissions and troubleshooting workflows with the fastest, most convenient transfer method available. **Key Features:** • **Smart File Transfer** - Automatically discovers and compresses flight data files for efficient upload • **Network Control** - Choose WiFi-only or cellular uploads based on your preferences • **Aircraft Management** - Select from your accessible aircraft fleet for accurate data association • **SD Card Cleanup** - Safely remove uploaded files while preserving essential system files • **Queue Management** - Files automatically queue for WiFi upload when on cellular networks **How It Works:** 1. Connect your Garmin G3000 SD card via adapter 2. Select your aircraft and let the app discover files 3. Choose your upload preferences and transfer 4. Optional cleanup removes processed files from your SD card **Perfect for:** - Monthly CMC data submission requirements - Sending diagnostic data to FlyHJ support teams - Flight data archiving and record-keeping **Requirements:** - iPhone/iPad with iOS 17.6+ - SD card adapter (USB-C or Lightning) - Active FlyHJ subscription

Screenshots

Radar Performance3 screens
FlyHJ Sync3 screens

Verdict

The call

The clearest difference is update cadence: FlyHJ Sync at weekly against Radar Performance's every 2 months. On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Radar Performance ships an update every 2 months, FlyHJ Sync weekly. The most recent releases landed on October 12, 2026 and September 29, 2026 respectively.

Scorecard1 real difference · 9 level
Radar Performance versus FlyHJ Sync: the parameters behind the verdict, then further details
ParameterRadar PerformanceFlyHJ Sync
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.6
Further details — not scored
Size8 MB5 MB
Age rating4+4+
DeveloperPOH Performance L.L.C.Carson Lee

In-app purchases

None

Radar Performance

No in-app purchases

None

FlyHJ Sync

No in-app purchases

Questions

Is Radar Performance free?
Radar Performance is free to download, with no in-app purchases.
Is FlyHJ Sync free?
FlyHJ Sync is free to download, with no in-app purchases.
Do Radar Performance or FlyHJ Sync have ads?
Neither Radar Performance nor FlyHJ Sync shows ads.
Which is updated more often, Radar Performance or FlyHJ Sync?
Radar Performance ships an update every 2 months, and FlyHJ Sync weekly. Most recently, Radar Performance was updated on October 12, 2026 and FlyHJ Sync on September 29, 2026.

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