Comparison

Gas Giants vs Mercury Retrograde Tracker

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

Head to head
About

Gas Giants

Explore the outer planets and their moons through a simulated telescope. View celestial bodies as they appear in real-time or at any specified date and time. Ideal for astronomy enthusiasts and educators.

Highlights
  • Simulated telescope view
  • Observe Jupiter, Saturn, Uranus, Neptune
  • View major moons
  • Real-time celestial positions
  • Select any date and time
  • iOS compatible
Read full description

Do you remember the thrill you experienced the first time you saw Jupiter or Saturn through a telescope? If so, Gas Giants is a must for your iOS library! Gas Giants lets you peer through a simulated telescope to observe Jupiter, Saturn, Uranus, and Neptune and their major moons, as they appear right now, or at any date and time. Amateur astronomers, teachers, scout leaders, astronomy club members or anyone who uses a telescope or binoculars to view the night sky will love Gas Giants. Gas Giants requires an iPhone 3GS or later, or an iPod Touch 3rd Generation or later (specifically, OpenGL ES 2.0 or later) to run. All iPad models are supported.

About

Mercury Retrograde Tracker

Stay ahead of astrological disruptions with this tool that tracks Mercury retrograde dates. Receive advance notifications, access personalized horoscopes, and use the note-taking feature to reflect on each period. Plan your life and avoid potential issues caused by planetary shifts.

Highlights
  • Mercury retrograde event dates
  • Personalized horoscopes
  • Advance event notifications
  • Note-taking for retrograde periods
  • Astrology forecasts
Features
Read full description

Are you tired of wondering when Mercury is in retrograde? Look no further! Our app is the ultimate tool for anyone interested in astrology and its effects on daily life. With our app, you'll never miss another Mercury retrograde event and you can be prepared for any disruptions it may cause. Our app features: Mercury retrograde event dates for multiple years Personalized horoscopes based on your zodiac sign, including Leo, Aries, Scorpio, and more Notifications in advance of a retrograde event, so you can plan accordingly and avoid any issues Note-taking functionality for each retrograde period, allowing you to reflect on your experiences Who could benefit from our app? Here are some examples: Astrology enthusiasts: Our app is perfect for anyone who wants to stay up-to-date on astrological events and how they might affect their lives. Business professionals: Mercury retrograde can cause disruptions in communication and technology, making it a critical time for anyone who works in these fields. With our app, you can plan ahead and avoid any unnecessary issues. Students: If you're in school, Mercury retrograde can cause disruptions in your studies. With our app, you can plan your assignments around retrograde periods and ensure that you're as prepared as possible. But don't just take our word for it! Here are some reviews from satisfied users: "As someone who's always been interested in astrology, this app is a game-changer. I can plan my life around retrograde periods and avoid any unnecessary stress. Highly recommended!" "I work in tech, so Mercury retrograde is a critical time for me. With this app, I can ensure that all my systems are up-to-date and I'm prepared for any issues. It's a lifesaver!" "I'm a student, and Mercury retrograde always seems to throw a wrench in my studies. But with this app, I can plan ahead and avoid any disruptions. It's helped me stay on top of my assignments and keep my grades up." Download our app today and start taking control of Mercury retrograde events in your life! Terms of service - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Gas Giants2 screens
Mercury Retrograde Tracker4 screens

Verdict

The call

Gas Giants and Mercury Retrograde Tracker both sit at 4.2 stars, but that hides the real split: 78% of Gas Giants's written reviews are positive against 30% of Mercury Retrograde Tracker's. Gas Giants also leads on in-app purchases (none vs 3) and iOS requirement (10.3 vs 15.6). Mercury Retrograde Tracker's advantage is update cadence (every 3 weeks vs every 6 months). On price, rating, 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. Mercury Retrograde Tracker sells 3 in-app purchases, starting at $1.99 per month. Gas Giants asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.2 for Gas Giants against 4.2 for Mercury Retrograde Tracker. Both are backed by a comparable volume of ratings — 25 and 55 respectively. Written reviews are what separate them: 78% of Gas Giants's written reviews are positive against 30% of Mercury Retrograde Tracker's.

UpkeepUpdate frequency

Gas Giants ships an update every 6 months, Mercury Retrograde Tracker every 3 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Gas Giants versus Mercury Retrograde Tracker: the parameters behind the verdict, then further details
ParameterGas GiantsMercury Retrograde Tracker
PriceFreeFree
Rating4.2 (25 ratings)4.2 (55 ratings) — better
Positive reviews78.4% of reviews — better30.0% of reviews
Number of ratings2555 — better
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.3 — better15.6
Further details — not scored
Size58 MB29 MB
Age rating4+4+
DeveloperSoftware BisqueInfinite Wave Media, LLC

Customer experience

Gas Giants

All ratings27 ratings
Positive81.5%
Neutral3.7%
Negative14.8%
Written reviews37 reviews
Positive78.4%
Neutral10.8%
Negative10.8%

Mercury Retrograde Tracker

All ratings55 ratings
Positive78.2%
Neutral3.6%
Negative18.2%
Written reviews10 reviews
Positive30.0%
Neutral0.0%
Negative70.0%

In-app purchases

None

Gas Giants

No in-app purchases

3 purchases

Mercury Retrograde Tracker

Subscriptions2
  • Pro Monthly$1.991 Month
  • Pro Annual7 Days trial$9.991 Year
One-time1
  • Pro Lifetime$14.99

Questions

Is Gas Giants free?
Gas Giants is free to download, with no in-app purchases.
Is Mercury Retrograde Tracker free?
Mercury Retrograde Tracker is free to download, with in-app purchases available.
Which has better reviews, Gas Giants or Mercury Retrograde Tracker?
Mercury Retrograde Tracker is rated higher. Gas Giants averages 4.2 out of 5 from 25 ratings, while Mercury Retrograde Tracker averages 4.2 from 55 ratings.
Do Gas Giants or Mercury Retrograde Tracker have ads?
Neither Gas Giants nor Mercury Retrograde Tracker shows ads.
Which is updated more often, Gas Giants or Mercury Retrograde Tracker?
Gas Giants ships an update every 6 months, and Mercury Retrograde Tracker every 3 weeks. Most recently, Gas Giants was updated on November 1, 2026 and Mercury Retrograde Tracker on November 3, 2026.

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