# iEFIS Light vs Red Grid Link

The clearest difference is update cadence: Red Grid Link at weekly against iEFIS Light's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. iEFIS Light sells 1 one-off in-app purchase and Red Grid Link sells 6 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

iEFIS Light ships an update every 3 weeks, Red Grid Link weekly. The most recent releases landed on September 5, 2026 and August 29, 2026 respectively.

## The numbers

| Metric | iEFIS Light | Red Grid Link |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/iefis-light/id1214266684/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 12 MB | 36 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [airWORK aviation media UG](https://appshunter.io/developer/1055282750) | [Estus Holdings LLC](https://appshunter.io/developer/1879926455) |

## What reviewers say

### iEFIS Light

[App page](https://appshunter.io/ios/app/iefis-light/id1214266684)

This app transforms your iPhone or iPad into a portable Primary Flight Display (PFD) by connecting to an iLEVIL SW AHRS system. It offers essential flight data like groundspeed, altitude, and heading, with customizable views and calibration options.

**Highlights:** Portable EFIS PFD, Connects to iLEVIL AHRS, Groundspeed display, GPS altitude, Customizable course rose, Attitude indicator calibration

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro | $2.99 | one-time |


### Red Grid Link

[App page](https://appshunter.io/ios/app/red-grid-link/id6760084718)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $3.99 | per month |
| Pro+Link Monthly | $5.99 | per month |
| Pro Annual | $29.99 | per year |
| Pro+Link Annual | $44.99 | per year |
| Team Annual | $199.99 | per year |
| Lifetime Pro+Link | $149.99 | one-time |


## Frequently asked questions

### Is iEFIS Light free?

iEFIS Light is free to download, with in-app purchases available.

### Is Red Grid Link free?

Red Grid Link is free to download, with in-app purchases available.

### Do iEFIS Light or Red Grid Link have ads?

Neither iEFIS Light nor Red Grid Link shows ads.

### Which is updated more often, iEFIS Light or Red Grid Link?

iEFIS Light ships an update every 3 weeks, and Red Grid Link weekly. Most recently, iEFIS Light was updated on September 5, 2026 and Red Grid Link on August 29, 2026.

---

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