# Alfredo Backer vs Pilot Mental Math Trainer

The clearest difference is price: Alfredo Backer at Free against Pilot Mental Math Trainer's $3.99. Pilot Mental Math Trainer's advantage is update cadence (monthly vs every 8 months) and iOS requirement (12.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Alfredo Backer is free to download; Pilot Mental Math Trainer costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Alfredo Backer ships an update every 8 months, Pilot Mental Math Trainer monthly. The most recent releases landed on September 18, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Alfredo Backer | Pilot Mental Math Trainer |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/pilot-mental-math-trainer/id1453543435/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 42.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | — | Paid |
| Size | 55 MB | 9 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Externato Alfredo Backer Ltda](https://appshunter.io/developer/1535072495) | [Thomas Oswald](https://appshunter.io/developer/740516956) |

## What reviewers say

### Alfredo Backer

[App page](https://appshunter.io/ios/app/alfredo-backer/id1212354980)

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

**In-app purchases:** none


### Pilot Mental Math Trainer

[App page](https://appshunter.io/ios/app/pilot-mental-math-trainer/id1453543435)

This app helps aspiring pilots improve their mental math skills, crucial for exams and flight operations. It offers six training modules and game-like features to enhance calculation speed, accuracy, and confidence.

**Highlights:** 6 Training Modules (Estimation, Fractions, Word Problems, Number Series, Arithmetic, Cube Test), Dynamic question generator, Timed exercises, Highscore tracking, Average response time tracking, Aviation-related word problems

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

**In-app purchases:** none


## Frequently asked questions

### Is Alfredo Backer free?

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

### Is Pilot Mental Math Trainer free?

Pilot Mental Math Trainer costs $3.99, with no in-app purchases.

### Do Alfredo Backer or Pilot Mental Math Trainer have ads?

Neither Alfredo Backer nor Pilot Mental Math Trainer shows ads.

### Which is updated more often, Alfredo Backer or Pilot Mental Math Trainer?

Alfredo Backer ships an update every 8 months, and Pilot Mental Math Trainer monthly. Most recently, Alfredo Backer was updated on September 18, 2026 and Pilot Mental Math Trainer on October 25, 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.*