Comparison

Airro E6B vs Lotto Engine 3D

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

Head to head
About

Airro E6B

Features
Read full description

Small helpful tool to make aviation related calculations and conversions easy. Current functions: - Conversions: distance, mass, speed, temperature and volume - Calculations: cloud base, cross wind, isa deviation, pressure, ROD, TOC and glide path - Fuel uplift - Stopwatch We will try to continuously improve and update the application with new features.

About

Lotto Engine 3D

This app simulates the physics of balls moving within a container, acting as a fun random number and ball generator. It's a useful tool for various applications, offering a creative and engaging experience.

Highlights
  • Physics engine simulation
  • Random ball generation
  • Random number generation
  • Creative utility tool
  • Automatic subscription option
Features
Read full description

A creative app that simulates the movement of a ball in a container, based on a real physics engine, a fun random ball generator and random number generator. It is a must-have gadget at home. ----------------------------------- 【Lotto Engine 3D Automatic Subscription Instructions】 1. Service Name: Lotto Engine 3D Weekly Subscription 2. Subscription period: 1 week 3. Price: $1.99 4. If you need to cancel the subscription, please manually open the "Settings" of iOS --> go to "iTunes Store & App Store" --> click "Apple ID", select "View Apple ID", enter the "Account Settings" page, click "Subscriptions", and select Lotto Engine 3D Weekly Subscription to cancel the subscription. If you do not close your subscription at least 24 hours before the end of the period, it will automatically renew. 5. Service Agreement (including rules for automatic subscription of super members): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 6. Privacy Agreement: https://github.com/denghejun/lotto_engine_tech_support/blob/main/privacy.md

Screenshots

Airro E6B4 screens
Lotto Engine 3D3 screens

Verdict

The call

The clearest difference is price: Lotto Engine 3D at Free against Airro E6B's $1.99. Lotto Engine 3D also leads on update cadence (daily vs every 40 months) and iOS requirement (13.0 vs 16.1). Airro E6B's advantage is in-app purchases (none vs 2). On ads and device support 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

Lotto Engine 3D is free to download; Airro E6B costs $1.99 up front. Lotto Engine 3D sells 2 in-app purchases, starting at $1.99 per 7 days. Airro E6B asks for nothing beyond the download.

UpkeepUpdate frequency

Airro E6B ships an update every 40 months, Lotto Engine 3D daily. The most recent releases landed on September 12, 2026 and September 11, 2026 respectively.

Scorecard4 real differences · 5 level
Airro E6B versus Lotto Engine 3D: the parameters behind the verdict, then further details
ParameterAirro E6BLotto Engine 3D
Price$1.99Free — better
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 40 monthsDaily — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Subscription
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.113.0 — better
Further details — not scored
Size1 MB19 MB
Age rating4+4+
DeveloperChristian van der Meij何均 邓

In-app purchases

None

Airro E6B

No in-app purchases

2 purchases

Lotto Engine 3D

Subscriptions1
  • Lotto Engine 3D Weekly Subs$1.997 Days
One-time1
  • Lotto Engine 3D Lifetime Right$3.99

Questions

Is Airro E6B free?
Airro E6B costs $1.99, with no in-app purchases.
Is Lotto Engine 3D free?
Lotto Engine 3D is free to download, with in-app purchases available.
Do Airro E6B or Lotto Engine 3D have ads?
Neither Airro E6B nor Lotto Engine 3D shows ads.
Which is updated more often, Airro E6B or Lotto Engine 3D?
Airro E6B ships an update every 40 months, and Lotto Engine 3D daily. Most recently, Airro E6B was updated on September 12, 2026 and Lotto Engine 3D on September 11, 2026.

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