Asteroid Close Approach vs CloudLabs Acetylene Synthesis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Asteroid Close Approach
Get real-time updates on near-Earth asteroid close approaches, including dates, distances, and impact energies. Access NASA's Sentry database for collision predictions and use a built-in calculator to estimate asteroid mass and energy.
- Real-time asteroid data on Apple Watch
- Comprehensive approach details
- Access to NASA's Sentry database
- Asteroid mass and energy calculator
- Collision monitoring for the next century
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Stay informed about the most recent near-Earth asteroid encounters—right from your iPhone or on your Apple Watch. Easily check the upcoming dates and times of close approaches, along with their distances, velocities, magnitudes, and estimated impact energies in kilotons. Dive into NASA’s Sentry database, a powerful collision monitoring system that continuously scans the latest asteroid catalog for any potential impacts within the next 100 years. Curious about an asteroid’s mass and energy? Use the built-in calculator to estimate these figures based on its absolute magnitude and approach speed. Features: • Latest Encounters on Your Wrist: View real-time asteroid data at a glance on your Apple Watch. • Comprehensive Tracking: Check each asteroid’s approach date, distance, velocity, magnitude, and potential impact energy. • Sentry Database Access: Keep tabs on NASA’s up-to-date collision predictions for the next century. • Asteroid Mass & Energy Calculator: Estimate physical properties and potential impact energy with a simple input of magnitude and speed. Stay informed, prepared, and captivated by the wonders of our cosmic neighborhood—anytime, anywhere.
CloudLabs Acetylene Synthesis
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In this simulator it is possible to carry out the synthesis of acetylene used as welding fuel, which must be done from calcium carbide and water. The simulator recreates a chemistry laboratory with a reaction balloon, a separatory funnel, two lighters, a Baeyer's reagent, bromine water, and ammonia nitrate, among other elements necessary to carry out the synthesis.
Screenshots
Verdict
The clearest difference is price: CloudLabs Acetylene Synthesis at Free against Asteroid Close Approach's $1.99. CloudLabs Acetylene Synthesis also leads on iOS requirement (9.0 vs 14.0). Asteroid Close Approach's advantage is update cadence (every 4 weeks vs every 28 months). On ads, in-app purchases 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
CloudLabs Acetylene Synthesis is free to download; Asteroid Close Approach costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Asteroid Close Approach ships an update every 4 weeks, CloudLabs Acetylene Synthesis every 28 months. Both last shipped on October 27, 2026.
| Parameter | Asteroid Close Approach | CloudLabs Acetylene Synthesis |
|---|---|---|
| Price | $1.99 | Free — better |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Every 4 weeks — better | Every 28 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 34 MB | 85 MB |
| Age rating | 4+ | 4+ |
| Developer | Arpacore B.V. | Jiovany Orozco |
In-app purchases
Asteroid Close Approach
No in-app purchases
CloudLabs Acetylene Synthesis
No in-app purchases
Questions
Is Asteroid Close Approach free?
Is CloudLabs Acetylene Synthesis free?
Do Asteroid Close Approach or CloudLabs Acetylene Synthesis have ads?
Which is updated more often, Asteroid Close Approach or CloudLabs Acetylene Synthesis?
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