Plen vs AstroPup Sky
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Plen
Track aircraft in real-time with live location updates. See planes as they fly and monitor weather conditions along their routes. Discover various types of aircraft with this intuitive radar tool.
- Real-time ADS-B tracking
- Live aircraft location updates
- Weather updates for flight paths
- Discover different types of aircraft
- Intuitive radar interface
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Meet Plen. Plens are in the sky all around us. Track plens with Plen, find plens, see plens. All with Plen. Find fun plens, fast plens, slow plens. Plen. Key Features: Real-Time ADS-B Tracking: Plen location updated in real time. Weather Updates: Watch plens fly through sky poofs. Download Plen.
AstroPup Sky
This application provides a unique sky chart for astrophotographers, displaying celestial object visibility for an entire night. It allows users to personalize their view with custom horizons and receive clear-sky notifications for preferred observing locations.
- All-sky, all-night object visibility
- Object rise and set times
- Personalized horizon views
- Clear-sky notifications
- Supports custom horizon files
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AstroPup Sky is a unique sky chart for astrophotographers. Instead of displaying a single point in time, AstroPup Plan displays the entire sky for an entire night. Celestial objects are fixed but the horizon is in motion, allowing you to determine the time and hours every object is visible. * All-sky, all-night views of object visibility, rise and set times * Personalize your view by adding a horizon file from AstroPup Horizon, N.I.N.A. or Stellarium. * Clear-sky notifications for your favorite observing locations
Screenshots
Verdict
The clearest difference is iOS requirement: Plen at 17.0 against AstroPup Sky's 26.0. On price, update cadence, ads and in-app purchases 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.
Plen ships an update every 6 days, AstroPup Sky weekly. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | Plen | AstroPup Sky |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 6 days — better | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 203 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Automata Solutions Ltd. | Aaron Freimark |
Customer experience
Plen
AstroPup Sky
In-app purchases
Plen
No in-app purchases
AstroPup Sky
No in-app purchases
