Comparison

Vernier Caliper Simulator 2 vs A320 CFDS Trainer Lite

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Vernier Caliper Simulator 2

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
Read full description

Practice reading a vernier caliper using this free and easy app. Ever wanted to practice reading a vernier caliper but didn’t have a set? No worries, now you can practice on your iPhone using this free and easy app. Just slide your finger across to grip the red object and take your reading. Enter your guess and press “Check Answer” to see if you got it right. This new version of the app adds leaderboards and the option to use a 0.005 cm precision scale. Keep practicing and you’ll be able to read the vernier caliper like a pro!

About

A320 CFDS Trainer Lite

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
Read full description

A320 CFDS Maintenance Trainer Lite Master the A320 Centralized Fault Display System directly from your mobile device with this specialized maintenance training app. Designed by aviation maintenance experts for maintenance professionals, this app delivers an authentic learning experience of core CFDS functions. Not intended for pilot training. KEY FEATURES: - Practice PFR (Post Flight Report) creation with and without faults - Navigate CFDS menus and submenus - Access both Normal and Menu Modes - View static reference pages from related systems (FMS, ATSU, AIDS) - Optimized performance for older hardware - 100% ad-free learning experience - Full offline functionality Developed by ERM SIMS, specialists in aviation maintenance training simulations, this Lite version provides essential A320 CFDS navigation training in a user-friendly interface. FMS and other system pages are static view-only references to help maintenance personnel explore system relationships. Check out our Full version offering expanded capabilities and enhanced features. Disclaimer: This application serves as a reference tool only and does not replace official maintenance manuals, which remain the primary information source. Variations may exist due to different A320 configuration options.

Screenshots

Vernier Caliper Simulator 23 screens
A320 CFDS Trainer Lite4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
Vernier Caliper Simulator 2 versus A320 CFDS Trainer Lite: the parameters behind the verdict, then further details
ParameterVernier Caliper Simulator 2A320 CFDS Trainer Lite
PriceFreeFree
Rating2.5 (2 ratings) — better—
Positive reviews50.0% of reviews — better25.0% of reviews
Number of ratings2 — better—
Update frequencyEvery 10 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.2 — better13.0
Further details — not scored
Size18 MB69 MB
Age rating4+4+
DeveloperJiun Wei ChiaERM SIMS LLC

Customer experience

Vernier Caliper Simulator 2

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

A320 CFDS Trainer Lite

Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

In-app purchases

None

Vernier Caliper Simulator 2

No in-app purchases

None

A320 CFDS Trainer Lite

No in-app purchases

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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