# AA Expense vs smartMFD by Guardian Avionics

The clearest difference is price: smartMFD by Guardian Avionics at Free against AA Expense's $2.99. smartMFD by Guardian Avionics also leads on device support (4 vs 2). AA Expense's advantage is rating (5.0 vs 3.7) and in-app purchases (none vs 10). On ratings volume, ads and iOS requirement there is nothing between them.

smartMFD by Guardian Avionics is free to download; AA Expense costs $2.99 up front. smartMFD by Guardian Avionics sells 10 in-app purchases, starting at $0.49 per 7 days. AA Expense asks for nothing beyond the download.

AA Expense holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

AA Expense ships an update every 3 weeks, smartMFD by Guardian Avionics every 3 months. The most recent releases landed on October 17, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | AA Expense | smartMFD by Guardian Avionics |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/aa-expense/id564404321/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/smartmfd-by-guardian-avionics/id599071174/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 3 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 4 MB | 121 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Advanced Aviation LLC](https://appshunter.io/developer/540245667) | [Co guardian llc](https://appshunter.io/developer/599071177) |

## What reviewers say

### AA Expense

[App page](https://appshunter.io/ios/app/aa-expense/id564404321)

This company-approved application allows Aero Air, LLC employees to submit expense and per-diem reports. It also facilitates the completion and submission of exception reports.

**Highlights:** Submit expense reports, Submit per-diem expenses, Complete exception reports, Company-approved for Aero Air, Track purchased items

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is AA Expense free?

AA Expense costs $2.99, with no in-app purchases.

### Is smartMFD by Guardian Avionics free?

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

### Which has better reviews, AA Expense or smartMFD by Guardian Avionics?

AA Expense is rated higher. AA Expense averages 5.0 out of 5 from 2 ratings, while smartMFD by Guardian Avionics averages 3.7 from 3 ratings.

### Do AA Expense or smartMFD by Guardian Avionics have ads?

Neither AA Expense nor smartMFD by Guardian Avionics shows ads.

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

AA Expense ships an update every 3 weeks, and smartMFD by Guardian Avionics every 3 months. Most recently, AA Expense was updated on October 17, 2026 and smartMFD by Guardian Avionics on October 23, 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.*