Comparison

The Sky by Redshift vs Heethr

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

Head to head
About

The Sky by Redshift

This app is a powerful yet easy-to-use planetarium that acts as your daily astronomy companion. Simply point your device at the sky to identify planets, stars, and constellations, and explore celestial objects with detailed views and informative explanations.

Highlights
  • Identify stars, planets, and constellations
  • Track celestial object paths
  • Simulate astronomical events
  • Explore deep-space objects
  • Learn about astronomical phenomena
  • Eclipse timetable and simulation
Features
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Developed in collaboration with THAMES & KOSMOS: The Sky – Astronomy, a powerful and easy-to-use planetarium – your daily companion for observing the sky! Which star is this? Where do I find Mars? Is it the ISS up there? Hold your smartphone or tablet up to the sky and see which planets, stars, or constellations are above you. Where is Jupiter and how can I find my zodiac in the sky? The Sky shows you the position of celestial objects in the sky with just a few taps. Get close-up views not only of near-Earth planets and moons, but also experience deep-space objects in stunning detail. What do the Saturnian moons look like? The Sky takes you on a breath-taking journey into the infinite realms of outer space. Fly to planets, stars, and other celestial bodies and let the app tell you about our Universe. What is a solar eclipse and what does an opposition of Mars mean? The Sky answers your questions with stunning animations and insightful explanations. Thus, even beginners will be able to understand the mechanics and to visually imagine the most important celestial events. No matter if you are a beginner or amateur astronomer, child or adult - with the intuitive app The Sky, everyone will immediately understand the sky - without much prior knowledge and long training. Shine with your knowledge of the sky, around the campfire or on night walks: with The Sky, astronomy will always be a pleasure! Discover the joy of watching the skies and the age-old fascination with space that has inspired mankind for millennia – and become part of the worldwide Redshift community. The app contains more than 9,000 stars, 88 constellations, hundreds of moons, asteroids and comets, as well as 200 spectacular deep-sky objects - all with accurate position calculation and motion tracking in real time. At a glance: • Recognize the stars and constellations of the night sky • Identify planets, moons, comets, and satellites and track their paths • Take breath-taking flights through space to distant stars and colorful nebulae • See what’s going on in the sky tonight with a direct simulation of the events • Learn to understand astronomical phenomena and events New in version 2.0: • Eclipse Timetable • Orbits of celestial objects • Expanded database with 6500 cities worldwide, including 2500 cities in the United States Were you able to witness the total solar eclipse in North America on April 8, 2024? This app contains everything you need know about this magical event: • Detailed description of the path of the eclipse in Mexico, the USA and Canada • Information on how to safely observe a solar eclipse • Eclipse timetable with the exact times for your location or best viewing position • Direct simulation of the eclipse in exciting animations • Sky map with the planets and stars that could be seen during the totality phase • Illustrated explanations of how a solar eclipse occurs • Everything about solar eclipses: Explanations and facts, illustrated with pictures and videos • Location selection via map, location search or GPS or selection of the "best position" for observation Your thirst for knowledge is not yet satisfied? With the premium subscription, you can activate many additional spaceflights and orbits as well as additional knowledge sections of "Discover astronomy". Here you can find more spectacular images and videos of the total solar eclipse on April 8, 2024. There is also an eclipse calendar with all solar and lunar eclipses between 1900 and 2100 and a guided tour of the U.S. MARS 2020 mission. This tour includes images and animations of the landing on Mars, as well as of the environment at the landing site of the Mars rover Perseverance. ***** Questions or suggestions for improvements: Mail to support@redshiftsky.com We are looking forward to your feedback! For more information on news and updates: redshiftsky.com www.redshiftsky.com/terms-of-use-the-sky/ *****

About

Heethr

Features
Read full description

The Heated Pavement Platform for Contractors, Customers, and Dealers From AI-powered layout designs to product ordering and project tracking, Heethr simplifies every step. Helping installers build faster, homeowners buy smarter, and dealers manage sales effortlessly. Terms of Use (EULA): https://heethr.com/terms-and-conditions/

Screenshots

The Sky by Redshift4 screens
Heethr4 screens

Verdict

The call

The Sky by Redshift and Heethr are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. The Sky by Redshift sells 2 in-app purchases, starting at $0.99 per month and Heethr sells 3 in-app purchases, starting at $99.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 19, 2026 and October 16, 2026 respectively.

ScorecardNo meaningful differences
The Sky by Redshift versus Heethr: the parameters behind the verdict, then further details
ParameterThe Sky by RedshiftHeethr
PriceFreeFree
Rating4.7 (816 ratings) — better—
Positive reviews65.0% of reviews—
Number of ratings816 — better—
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better16.6
Further details — not scored
Size472 MB83 MB
Age rating4+4+
DeveloperUnited Soft Media Verlag GmbHHEETHR SOLUTIONS INC.

Bugs and requests

The Sky by Redshift

Reported bugs

1 issue
  • Unauthorized access to private systems

Requested features

3 requests
  • Red light option to preserve night vision
  • Smaller, less obtrusive pointer
  • More features and accurate information

Heethr

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

The Sky by Redshift

Subscriptions2
  • The Sky Premium 1 Month$0.991 Month
  • The Sky Premium 1 Year$3.991 Year
3 purchases

Heethr

Subscriptions3
  • Warm Monthly$99.991 Month
  • Hot Monthly$199.991 Month
  • Warm Yearly$499.001 Year

Questions

Is The Sky by Redshift free?
The Sky by Redshift is free to download, with in-app purchases available.
Is Heethr free?
Heethr is free to download, with in-app purchases available.
Do The Sky by Redshift or Heethr have ads?
Neither The Sky by Redshift nor Heethr shows ads.
Which is updated more often, The Sky by Redshift or Heethr?
The Sky by Redshift ships an update every 2 months, and Heethr every 2 months. Most recently, The Sky by Redshift was updated on October 19, 2026 and Heethr on October 16, 2026.

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