# smartMFD by Guardian Avionics vs E

The clearest difference is in-app purchases: E at none against smartMFD by Guardian Avionics's 10. E also leads on update cadence (fortnightly vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. smartMFD by Guardian Avionics sells 10 in-app purchases, starting at $0.49 per 7 days. E asks for nothing beyond the download.

smartMFD by Guardian Avionics ships an update every 3 months, E fortnightly. The most recent releases landed on October 23, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | smartMFD by Guardian Avionics | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/smartmfd-by-guardian-avionics/id599071174/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 121 MB | 28 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Co guardian llc](https://appshunter.io/developer/599071177) | [emoby srl](https://appshunter.io/developer/1503978995) |

## What reviewers say

### smartMFD by Guardian Avionics

[App page](https://appshunter.io/ios/app/smartmfd-by-guardian-avionics/id599071174)

This app transforms your mobile device into a multifunction display for aircraft, showing flight data, engine performance, and navigation charts. It records flight data for later analysis and provides alerts for carbon monoxide levels and pulse oximetry when connected to compatible hardware.

**Highlights:** Multifunction display (MFD), Flight data recording and analysis, Engine performance monitoring, VFR/IFR charts and approach plates, CO level alerts, Pulse oximeter readings

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plan 4 (Weekly) | $0.49 | per 7 days |
| Plan 1 (Monthly) | $9.99 | per month |
| Plan 3 (Monthly) | $12.99 | per month |
| Plan 4 (Monthly) | $24.99 | per month |
| Plan 5 (Monthly) | $29.99 | per month |
| Plan 1 (Yearly) | $99.99 | per year |
| Plan 2 (Yearly) | $149.99 | per year |
| Plan 3 (Yearly) | $199.99 | per year |
| Plan 4 (Yearly) | $249.99 | per year |
| Plan 5 (Yearly) | $299.99 | per year |


### E

[App page](https://appshunter.io/ios/app/e-go-depot-sharing/id6752901849)

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

**In-app purchases:** none


## Frequently asked questions

### Is smartMFD by Guardian Avionics free?

smartMFD by Guardian Avionics is free to download, with in-app purchases available.

### Is E free?

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

### Do smartMFD by Guardian Avionics or E have ads?

Neither smartMFD by Guardian Avionics nor E shows ads.

### Which is updated more often, smartMFD by Guardian Avionics or E?

smartMFD by Guardian Avionics ships an update every 3 months, and E fortnightly. Most recently, smartMFD by Guardian Avionics was updated on October 23, 2026 and E on October 19, 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.*