Comparison

pxSat3D vs Red Hat RHCSA Prep

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

Head to head
About

pxSat3D

Visualize real-time satellite orbits around Earth. Explore the density of specific satellite types in orbit. Performance may vary on older devices.

Highlights
  • Real-time satellite tracking
  • Visualize satellite orbits
  • Quantify satellite types
  • Space traffic visualization
  • Educational space data
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This application will show the space traffic with the satellites currently orbiting . You can visualise the quantity of satellite for one type. Note : on older devices, displaying of numerous objects can be slow.

About

Red Hat RHCSA Prep

Features
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Get ready for the Red Hat Certified System Administrator (RHCSA) exam with 150 original practice questions across 10 topic areas you can study anytime, anywhere - completely offline. Disclaimer: This is an unofficial, independent study app. It is not affiliated with, endorsed by, or sponsored by Red Hat, Inc.. "Red Hat" and "RHCSA" are trademarks of Red Hat, Inc. All questions are original and based on publicly available information about the exam objectives. What you get - 150 multiple-choice questions, each with a clear explanation - 10 topic areas mirroring the real exam domains: command line, permissions, LVM, systemd, SELinux, containers - Study by topic, a shuffled Random mode, or a timed Mock Exam - Instant feedback with the correct answer and why it is right - Automatic review list of missed questions plus bookmarks - 100% offline - no account, no login, no ads, and no data collection - One-time purchase; every feature is unlocked from the start How to use 1. Open the app - no account or login is required. 2. Choose a topic, Random, or Mock Exam from the Home screen. 3. Answer each question and tap Submit to see the correct answer and explanation. 4. Revisit missed questions and bookmarks anytime; progress is saved locally on your device. This is a one-time paid app. All 150 questions are bundled inside the app as static content, and nothing is ever collected or uploaded.

Screenshots

pxSat3D3 screens
Red Hat RHCSA Prep4 screens

Verdict

The call

The clearest difference is price: pxSat3D at Free against Red Hat RHCSA Prep's $4.99. pxSat3D also leads on iOS requirement (13.0 vs 15.1). Red Hat RHCSA Prep's advantage is in-app purchases (none vs 2) and update cadence (every 3 weeks vs every 3 months). 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

pxSat3D is free to download; Red Hat RHCSA Prep costs $4.99 up front. pxSat3D sells 2 one-off in-app purchases. Red Hat RHCSA Prep asks for nothing beyond the download.

UpkeepUpdate frequency

pxSat3D ships an update every 3 months, Red Hat RHCSA Prep every 3 weeks. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 6 level
pxSat3D versus Red Hat RHCSA Prep: the parameters behind the verdict, then further details
ParameterpxSat3DRed Hat RHCSA Prep
PriceFree — better$4.99
Rating4.5 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size12 MB33 MB
Age rating4+4+
DeveloperP'tit Xavsatoshi yoshida

In-app purchases

2 purchases

pxSat3D

One-time2
  • Tip$0.99
  • Tip$2.99
None

Red Hat RHCSA Prep

No in-app purchases

Questions

Is pxSat3D free?
pxSat3D is free to download, with in-app purchases available.
Is Red Hat RHCSA Prep free?
Red Hat RHCSA Prep costs $4.99, with no in-app purchases.
Do pxSat3D or Red Hat RHCSA Prep have ads?
Neither pxSat3D nor Red Hat RHCSA Prep shows ads.
Which is updated more often, pxSat3D or Red Hat RHCSA Prep?
pxSat3D ships an update every 3 months, and Red Hat RHCSA Prep every 3 weeks. Most recently, pxSat3D was updated on October 2, 2026 and Red Hat RHCSA Prep on October 6, 2026.

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