# Radar Performance vs MachDB

The clearest difference is update cadence: MachDB at every 2 weeks against Radar Performance's every 2 months. MachDB also leads on monetization model (free vs ad-supported). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Radar Performance against 5.0 for MachDB. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Radar Performance ships an update every 2 months, MachDB every 2 weeks. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Radar Performance | MachDB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/radar-performance/id1502792151/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/machdb/id6757681004/reviews) |
| Number of ratings | **4** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Ad-supported | **Free** |
| Size | 8 MB | 16 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [POH Performance L.L.C.](https://appshunter.io/developer/641403529) | [MachDB LLC](https://appshunter.io/developer/1868240819) |

## 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


### MachDB

[App page](https://appshunter.io/ios/app/machdb/id6757681004)

Easily download and transfer Garmin avionics database updates to an SD card using your iPhone or iPad. This app supports a wide range of Garmin avionics and requires only a standard USB-C SD card reader. Updates are fast and convenient for field use.

**Highlights:** Download Garmin database updates, Transfer updates to SD card, iPhone and iPad compatible, Supports various Garmin avionics, Uses standard USB-C SD card reader, Fast Wi-Fi/Cellular downloads

**In-app purchases:** none


## Frequently asked questions

### Is Radar Performance free?

Radar Performance is free to download, with no in-app purchases.

### Is MachDB free?

MachDB is free to download, with no in-app purchases.

### Which has better reviews, Radar Performance or MachDB?

Radar Performance and MachDB are both rated 5.0 out of 5 on the App Store, from 4 and 3 ratings respectively.

### Do Radar Performance or MachDB have ads?

Neither Radar Performance nor MachDB shows ads.

### Which is updated more often, Radar Performance or MachDB?

Radar Performance ships an update every 2 months, and MachDB every 2 weeks. Most recently, Radar Performance was updated on October 12, 2026 and MachDB on October 8, 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.*