# Vernier Caliper Simulator 2 vs A320 CFDS Trainer Lite

The clearest difference is review sentiment: Vernier Caliper Simulator 2 at 50% against A320 CFDS Trainer Lite's 25%. Vernier Caliper Simulator 2 also leads on iOS requirement (10.2 vs 13.0). A320 CFDS Trainer Lite's advantage is update cadence (every 3 months vs every 10 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Vernier Caliper Simulator 2 ships an update every 10 months, A320 CFDS Trainer Lite every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Vernier Caliper Simulator 2 | A320 CFDS Trainer Lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/vernier-caliper-simulator-2/id1202620072/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **50.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 18 MB | 69 MB |
| Requires iOS | **10.2** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jiun Wei Chia](https://appshunter.io/developer/560872418) | [ERM SIMS LLC](https://appshunter.io/developer/1697141250) |

## What reviewers say

### Vernier Caliper Simulator 2

[App page](https://appshunter.io/ios/app/vernier-caliper-simulator-2/id1202620072)

Practice reading a vernier caliper with this free and easy application. Slide your finger to grip objects, enter your measurement guess, and check your accuracy. This version includes leaderboards and a higher precision scale option.

**Highlights:** Vernier caliper simulation, Interactive object gripping, Answer checking, Leaderboards, 0.005 cm precision scale option

**Features:** macOS Compatibility

**In-app purchases:** none


### A320 CFDS Trainer Lite

[App page](https://appshunter.io/ios/app/a320-cfds-trainer-lite/id6451204364)

Master the A320 Centralized Fault Display System with this mobile maintenance training app. Practice fault reporting, navigate menus, and access reference pages from related systems. Designed by aviation experts for professionals, it offers offline functionality and an ad-free experience.

**Highlights:** Practice PFR creation, Navigate CFDS menus, Access Normal and Menu Modes, View static reference pages, Offline functionality, Ad-free learning

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Vernier Caliper Simulator 2 free?

Vernier Caliper Simulator 2 is free to download, with no in-app purchases.

### Is A320 CFDS Trainer Lite free?

A320 CFDS Trainer Lite is free to download, with no in-app purchases.

### Do Vernier Caliper Simulator 2 or A320 CFDS Trainer Lite have ads?

Neither Vernier Caliper Simulator 2 nor A320 CFDS Trainer Lite shows ads.

### Which is updated more often, Vernier Caliper Simulator 2 or A320 CFDS Trainer Lite?

Vernier Caliper Simulator 2 ships an update every 10 months, and A320 CFDS Trainer Lite every 3 months. Most recently, Vernier Caliper Simulator 2 was updated on November 2, 2026 and A320 CFDS Trainer Lite on November 3, 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.*