# Radar Performance vs FlyHJ Sync

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.

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

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.

## The numbers

| Metric | Radar Performance | FlyHJ Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/radar-performance/id1502792151/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 8 MB | 5 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [POH Performance L.L.C.](https://appshunter.io/developer/641403529) | [Carson Lee](https://appshunter.io/developer/1828022160) |

## What reviewers say

### Radar Performance

[App page](https://appshunter.io/ios/app/radar-performance/id1502792151)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### FlyHJ Sync

[App page](https://appshunter.io/ios/app/flyhj-sync/id6748925501)

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*