ZERO vs Star Exposure Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZERO
Control your ZXP Evolve drone directly from your smartphone or tablet. This application provides the interface for piloting your drone and accessing its features.
- Drone piloting via smartphone
- Tablet compatibility
- Direct drone control interface
- Access to drone features
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Compatible with the ZERO-X EVOLVE Fly your ZXP Evolve DRONE via your smartphone or tablet. With the ZERO-X EVOLVE APP you can control your EVOLVE drone. For more information on the Evolve drone, please visit www.zero-x.com.au
Star Exposure Calculator
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Star Exposure Calculator is an app that helps you calculate the right exposure settings for pin-sharp stars in astrophotography. Features: • Calculate star exposure via simple or complete NPF rule for pin-sharp stars • Calculate star exposure via 500 rule • Calculate focal ratio of your telescope • Telescope magnification calculator • Maximum telescope magnification calculator • Telescope true field of view calculator We constantly update the app to provide more features that users are looking for, so expect even more with future updates.
Screenshots
Verdict
The clearest difference is ads: ZERO at none against Star Exposure Calculator's shown. ZERO also leads on iOS requirement (11.0 vs 13.0). On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ZERO ships an update fortnightly, Star Exposure Calculator every 2 weeks. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.
| Parameter | ZERO | Star Exposure Calculator |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 125 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Directed Electronics Australia | Dejan Boras |
In-app purchases
ZERO
No in-app purchases
Star Exposure Calculator
No in-app purchases
Questions
Is ZERO free?
Is Star Exposure Calculator free?
Do ZERO or Star Exposure Calculator have ads?
Which is updated more often, ZERO or Star Exposure Calculator?
Other comparisons
