FOA（Entel） vs Lotto Engine 3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FOA（Entel）
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Field Operation assistant. FOA is a kind of mobile tool that can help Operator to improve network Operatation & Maintenance efficiency.
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.
- Physics engine simulation
- Random ball generation
- Random number generation
- Creative utility tool
- Automatic subscription option
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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
Verdict
The clearest difference is in-app purchases: FOA（Entel） at none against Lotto Engine 3D's 2. FOA（Entel） also leads on iOS requirement (8.0 vs 13.0). Lotto Engine 3D's advantage is update cadence (daily vs every 9 months). On price, 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
Both are free to download. Lotto Engine 3D sells 2 in-app purchases, starting at $1.99 per 7 days. FOA（Entel） asks for nothing beyond the download.
FOA（Entel） ships an update every 9 months, Lotto Engine 3D daily. The most recent releases landed on October 19, 2026 and September 23, 2026 respectively.
| Parameter | FOA（Entel） | Lotto Engine 3D |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 9 months | Daily — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Subscription |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 13 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Empresa Nacional de Telecomunicaciones S.A. BO. | 何均 邓 |
In-app purchases
FOA（Entel）
No in-app purchases
Lotto Engine 3D
- Lotto Engine 3D Weekly Subs$1.997 Days
- Lotto Engine 3D Lifetime Right$3.99
Questions
Is FOA（Entel） free?
Is Lotto Engine 3D free?
Do FOA（Entel） or Lotto Engine 3D have ads?
Which is updated more often, FOA（Entel） or Lotto Engine 3D?
Other comparisons
