Comparison

Solstix vs Free Sky Planner

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

Head to head
About

Solstix

Visualize celestial bodies in stunning 3D with real-time astronomical data. Track space weather, follow NASA missions, and explore planets with live imagery. Perfect for photographers, stargazers, and anyone fascinated by the cosmos.

Highlights
  • 3D celestial bodies with NASA textures
  • Real-time sun, moon, and planet data
  • Dynamic horizon with real-time sky colors
  • Artemis II mission tracker
  • Space weather alerts
  • Live Mars rover and SDO imagery
  • 3D Moon phases with haptic feedback
Features
Read full description

The sky is doing something incredible right now. Solstix shows you what. STUNNING 3D VISUALS, REAL DATA Solstix isn't just another sunrise app. It's a beautifully designed astronomy app featuring stunning 3D celestial bodies with NASA textures, accurate sun, moon, and planet data, and a dynamic horizon that shifts through real-time sky colors from predawn to golden hour to night. NEW: 3D UNIVERSE Every celestial body is now a beautiful 3D model. Drag to rotate like a globe. Long-press for a glow burst. The Moon shows realistic phase lighting with the terminator shadow exactly where it should be. Saturn has its iconic 4-band ring system. Smooth 60fps rendering brings the solar system to life. NEW: ARTEMIS II MISSION CENTER Follow NASA's historic crewed lunar mission. Track the spacecraft from launch to lunar flyby to splashdown. Meet the crew. Browse photos from the Moon. Get live mission updates. Watch the countdown to Artemis III. NEW: SPACE WEATHER Know what the Sun is doing. Track solar flares, coronal mass ejections, and geomagnetic storms in real time. See activity levels from Quiet to Severe. Powered by NASA DONKI. LIVE FROM MARS See real images from the Curiosity rover. Pick from 6 cameras. You're looking at another planet. LIVE FROM SPACE See the Sun through NASA's Solar Dynamics Observatory. Explore Earth from deep space with NASA EPIC imagery. THE MOON, PERFECTED 3D Moon with realistic phase lighting. Drag through 60 days of phases with haptic feedback. NASA Dial-A-Moon shows tonight's view. DAYLIGHT, VISUALIZED Follow the Sun's path. Watch the horizon change. Know exactly when golden hour begins. FEATURES • 3D Sun, Moon, and planets with NASA textures • Saturn's rings with realistic tilt • Artemis II tracker with crew and photos • Space weather alerts • 8 planets with visibility data • Live Mars rover images • Live NASA SDO imagery • Moon phase with haptic scrubbing • Dynamic horizon with stars • Twilight timeline and golden hour countdown • NOAA-powered calculations MADE FOR PEOPLE WHO LOOK UP Photographers. Stargazers. Hikers. Or anyone who has ever looked up and wondered. No ads. No subscriptions. No tracking. 100% free. Data: NASA SDO, GSFC, LRO, EPIC, JPL Mars, DONKI, Artemis, NOAA

About

Free Sky Planner

Plan your astrophotography sessions with real-time sky quality forecasts and astronomy signals. Compare observing spots and find the best windows for capturing the night sky.

Highlights
  • Sky quality tracking
  • Observing spot comparison
  • Best observing window identification
  • Milky Way visibility and direction
  • Offline forecast fallback
  • Home screen widget
Features
Read full description

Choose when and where to go stargazing. DarkScout brings cloud forecasts, Moon conditions and observing-location maps together to help you plan a night outside. Every feature is completely free, with no paywall, trial or subscription required. PLAN YOUR NIGHT • Check the Tonight recommendation and conditions for your location. • See visible targets and browse monthly observing recommendations. • Plan up to 14 nights ahead and compare observing locations. FIND A PLACE TO OBSERVE • Explore maps of observing locations and save unlimited spots. • Review 72-hour cloud-cover maps and use horizon profiles to plan around your view. • Set alerts for multiple locations and choose your own thresholds. EXPLORE OBSERVING TARGETS • Browse the complete object catalog for your next observing or astrophotography session. • Use Red Night Mode while outdoors. GO OUT TOGETHER • Join or host observing events, chat with participants and arrange a weather backup plan. • Share original-quality astrophotos and save your favorites. • Manage recurring sessions, reminders and co-hosts. You control the privacy of your shared locations. Reporting and blocking tools are available in Community. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Solstix4 screens
Free Sky Planner4 screens

Verdict

The call

The clearest difference is monetization model: Solstix at free against Free Sky Planner's freemium. Solstix also leads on update cadence (every 3 days vs every 2 weeks) and rating (5.0 vs 4.8). On price, review sentiment, ratings volume and ads 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

Both are free to download. Solstix sells 1 one-off in-app purchase and Free Sky Planner sells 2 in-app purchases, starting at $2.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Solstix holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Solstix ships an update every 3 days, Free Sky Planner every 2 weeks. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Solstix versus Free Sky Planner: the parameters behind the verdict, then further details
ParameterSolstixFree Sky Planner
PriceFreeFree
Rating5.0 (3 ratings) — better4.8 (4 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings34 — better
Update frequencyEvery 3 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFreemium
DevicesiPhoneiPhone
Requires iOS26.026.0
Further details — not scored
Size48 MB24 MB
Age rating4+4+
DeveloperHashsecure Technologies LLCSebastian Mraz

Customer experience

Solstix

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Free Sky Planner

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Solstix

One-time1
  • Support Solstix$2.99
2 purchases

Free Sky Planner

Subscriptions2
  • Monthly PRO$2.491 Month
  • Yearly PRO$14.991 Year

Questions

Is Solstix free?
Solstix is free to download, with in-app purchases available.
Is Free Sky Planner free?
Free Sky Planner is free to download, with in-app purchases available.
Which has better reviews, Solstix or Free Sky Planner?
Solstix is rated higher. Solstix averages 5.0 out of 5 from 3 ratings, while Free Sky Planner averages 4.8 from 4 ratings.
Do Solstix or Free Sky Planner have ads?
Neither Solstix nor Free Sky Planner shows ads.
Which is updated more often, Solstix or Free Sky Planner?
Solstix ships an update every 3 days, and Free Sky Planner every 2 weeks. Most recently, Solstix was updated on October 24, 2026 and Free Sky Planner on October 24, 2026.

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