# The Sky Pro by Redshift — Professional Astronomy

> Professional planetarium app for exploring and learning about celestial objects. (iPhone/iPad app by USM.)

- Source: https://appshunter.io/ios/app/the-sky-pro-by-redshift/id1481865153 (this page in markdown: same URL + `.md`)
- Developer: [USM](https://appshunter.io/developer/330111789)
- Category: Reference, Education
- Price: $6.99 with in-app purchases
- Rating: 4.80/5 from 335 App Store ratings · 52 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 1.1 GB
- Languages: Dutch, German (Germany), Russian, European Spanish, American English, Italian, Japanese, Chinese (Simplified, China), European Portuguese, French (France)
- Released: 2020-03-25
- Data updated: 2026-08-30
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/the-sky-pro-by-redshift/id1481865153/reviews.md

## What is The Sky Pro by Redshift?

The Sky Pro by Redshift is your tool and your knowledge base when it comes to cosmic objects.

Planets and moons, asteroids and comets, stars and deep-sky objects - explore the night sky and enjoy astronomy with The Sky Pro. Discover fascinating celestial objects and learn more about them. See what is happening in the sky tonight or travel through time to observe the objects on their orbits and to see how the constellations in the sky change.

Features:
• Award-winning planetarium with over 100,000 stars, 10,000 spectacular deep-sky objects and thousands of other celestial objects
• Explore the night sky with unique brilliance and precision
• Determine rising and setting times and plan your observations
• Travel through time
• Accurate simulation of planetary orbits, solar and lunar eclipses, conjunctions and many other celestial phenomena
• Real-time tracking of satellites and space missions
• Free update service to get the latest orbital data for satellites, comets and asteroids
• Augmented reality to merge the sky in Redshift and the surrounding environment
• Fascinating 3D models of the planets, moons, asteroids and many deep-sky objects 
• Land on the planets and moons to observe the sky from there
• Breathtaking space flights to planets, moons and stars as well as distant galaxies and colorful nebulae
• Comprehensive scientific data on celestial objects and their position, transit and visibility
• Wide range of functions, yet easy to use
• Numerous sky view settings, including a "Night View" option
• "Today's Night Sky" and "My Favorites" show you what's going on in the sky tonight 
• Calendar for planning observation of solar and lunar eclipses 
• 25 interesting and educational chapters of "Discover Astronomy"
• Share your most spectacular Redshift experiences via iMessage 
• Apple Watch connectivity helps you observe the sky

Would you like to use this app as a professional tool for controlling your telescope?

Extend the app with the professional subscription The Sky Ultimate and get one of the most powerful planetariums in the world. Configure your own sky views, find your perfect observation targets among millions of celestial objects, control your telescope, make fascinating journeys into space and experience the heavenly bodies up close.

Features of The Sky Ultimate:
• Your daily assistant for successful sky observation
• Huge database with more than 2,500,000 stars and 70,000 deep-sky objects
• Online access to more than one billion stars from the USNO-B1.0 and GAIA DR3 catalogues 
• Powerful sky calendar and precise location and visibility data for all objects
• Telescope control for Meade or Celestron telescopes (except Celestron NexStar Evolution series)
• Notifications so you never miss a celestial event
• Ability to save an unlimited number of sky views with the option to send them to friends or reopen them in Redshift 
• Professional solar eclipse map showing the exact path of the Moon's shadow across the Earth's surface
• Simulation of brightness variations of new stars and supernovae
• Database of stars with exoplanets
• Calculation of the trajectories of asteroids and comets with the unique numerical integration
• Ability to select the exact landing site on a planet or moon
• Tracking of the exact trajectory of satellites above the Earth

*****

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/en/terms-of-use/

*****

## Key features

- Award-winning planetarium with 100,000+ stars
- Accurate simulation of celestial phenomena
- Real-time satellite tracking
- Augmented reality sky view
- 3D models of celestial objects
- Telescope control (with subscription)

## Pricing and in-app purchases

Base price: $6.99.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| The Sky Ultimate 1 Year | $9.99 | per year |
| The Sky Ultimate 1 Month | $1.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| The Sky Ultimate | $22.99 | one-time |


## What do users think of The Sky Pro by Redshift?

Overall sentiment: mixed

**Pros**

- ✨ Nice fresh look
- 👍 User-friendly interface
- 🚀 Fast and responsive
- 🔭 Detailed astronomical data
- 🌌 Immersive 3D flights
- 💡 Good for learning
- 🌟 Excellent planetarium
- 📱 Pocket-sized observatory
- ✅ Worth the cost
- 👍 Devs care about app

**Cons**

- 💸 Expensive subscription model
- 💰 Double charging for purchases
- 🤔 Vague upgrade details
- 📉 Old version removed
- 😕 Limited free trial
- 👎 Subscription not worth it
- 📉 Data outdated
- 🚫 No distances shown
- 😩 Unintuitive menus
- 💸 Overpriced subscription
- 📉 Basic version limited
- 💰 Subscription too expensive
- 📉 Not enough satellites
- 😔 Missing features from old app
- 💸 Subscription model disliked

**Commonly reported bugs**

- App crashes on launch
- App crashes on iPad
- Compass calibration issues (20° off)
- Settings reset to default sporadically
- Ultimate trial expired before fix
- No reply from developer
- Ultimate trial cannot be used again
- Ultimate trial didn't add features
- Ultimate version not unlocking
- App frozen on launch screen
- Login issues
- Information inaccurate (sun rise, moon phase)
- Follow sky error message
- App not working
- Cannot see anything on display
- Sky scan not possible
- Time option limited to 1600 AD
- Telescope control lost on reinstallation
- Extended time frames lost on reinstallation
- App not opening
- Himmelscan not correct
- App not activating after review
- Constellation lines delay
- Comet Atlas C/2019 Y4 not appearing
- Famous comets only in subscription
- Does not retain preference settings
- Crashes when search icon is hit
- Spacecraft section disappeared
- Conjunction and meteor shower info missing
- Rocket button placement issue
- App freezes on launch screen with spinning loader

**Most requested features**

- More details on Ultimate upgrade
- Ability to fly to other galaxies
- More distant stars accessible
- Add JWST
- More range to view universe
- Rotate universe from greater distance
- Add nearby galaxies (LMC, SMC, Andromeda)
- Always show constellation images
- Add conjunction and meteor shower info
- More flexible subscription options
- Show planets visible and when, moon rise/set, best deep sky objects in 'Today's Sky'
- Add more satellites
- Add Telrad view finder
- More observable comets
- Add spacecraft section
- More detailed information on celestial objects
- Add Jupiter, Uranus, Neptune rings
- Add constellations outside Milky Way
- Update cosmological data

## Recent user reviews (10 of 52)

All indexed reviews: https://appshunter.io/ios/app/the-sky-pro-by-redshift/id1481865153/reviews.md

### 1/5 — Was soll das?

*2026-03-29*

Edit: Ich habe ihr Antwort zur Kenntnis genommen auch wenn diese faktisch falsch ist. Bestanden hätte man mindestens mit personalisierten Codes entgegen kommen können. Nebenbei hat sich an der Grafik nichts verbesserter - das Menu hat ein Facelift bekommen - mehr nicht. Ihre Antwort ist maximal daneben.

Original:
Ich habe bei Red Shift Pro viele Einkäufe gehabt. Jetzt wird die App abgelöst und ich muss alles erneut kaufen/abonnieren. Das ist schon dreist. 

Die Einkäufe sollen schon zu übertragen sein, wenn man eine App abschaltet und eine reine Designaktualisierung als „verbesserte“ App verkauft. 

Dafür hätte es keine neue App gebraucht. Die neue App braucht es nur um Kunden das Geld doppelt abzunehmen. Miese Masche.

**Developer response:** Sehr geehrter Kunde, Redshift Pro wurde 2015 veröffentlicht. Im Jahr 2020 mussten wir diese Version aus dem Verkauf nehmen, da sich die technischen Gegebenheiten stark weiterentwickelt hatten und eine weitere Entwicklung der alten App mit vertretbarem Aufwand nicht mehr möglich war. Unsere neue App haben wir in vieler Hinsicht deutlich verbessert. Leider ist es im iOS Store jedoch nicht möglich, Käufe von einer App auf eine andere App zu übertragen, wir bitten dafür um Ihr Verständnis.

### 3/5 — A nice new version

*2026-03-19*

They’ve given the old app a very nice fresh and welcome lick of paint. What I really didn’t like about the last version was that after spending a lot of time customising it to my liking, it would sporadically return all the settings to default which put me off using the app completely in the end. I’m happy to see this issue doesn’t occur in this new version (so far). I like this version enough to consider upgrading to ultimate, but I would like more details about what i’m actually going to get for my money, the website seems to be a bit vague about this. I’m a casual astronomer, I don’t have a telescope which is software compatible and it appears that this is the main benefit of upgrading.

Edit: Just seen that a free trial of Ultimate is now being offered, so this has answered my question. However, after accepting the offer i’ve opened the app and there are no noticeable additions, in fact I can’t see any at all ?!

Edit: The free trial expired before the fix and I didn’t even get a chance to try the Ultimate version. Email was sent to the developer and I received no reply. I want to see what I’m getting before I upgrade but I cannot use the free trial again. Disappointed!

Response to developer comment: I have sent an email stating just that, and I’ve sent a private message on the Facebook group and I haven’t had a reply to either.

**Developer response:** Hi ChrisR36, we kindly ask you to send an email to support@redshiftsky.com. In your email, please mention that you encountered the free-trial subscription issue, and indicate the user name used in your iOS App Store review. Thank you very much in advance.

### 1/5 — App stürzt ab

*2025-08-20*

Seit dem letzten Update stürzt die App auf dem iPad ab, bevor sie sich überhaupt öffnet!

**Developer response:** Lieber Redshift Kunde, dies war leider ein Fehler in der Version 1.6.1, den wir inzwischen behoben haben. Jetzt funktioniert auch die Ultimate Einmalzahlung ohne Probleme. Wir entschuldigen uns für die Unannehmlichkeiten.Nachtrag: Es tut uns sehr leid, aber es gab tatsächlich noch ein weiteres Problem. Es trat nur dann auf, wenn die Einstellungen unserer App über die iCloud synchronisiert wurden, und zwar nur dann, wenn ein Nutzer parallel mit mehreren iOS-Geräten arbeitet. Auch dies ist nun behoben. Nach dem Einspielen des Updates sollte jetzt wirklich alles funktionieren. Wir bedauern dies sehr und wünschen weiter viel Spaß mit unserer App!

### 1/5 — Off by 20°. Cannot fix.

*2025-08-04*

It doesn’t navigate properly. I can point my iPhone towards the moon stars or planets. It’s always about 20° off. I’ve tried to calibrate the compass. With these large errors, the app is useless.

### 5/5 — Hervorragende Software

*2025-04-02*

Die Vorgänger-Versionen „Redshift“ und „Redshift Pro“ wurden offensichtlich überarbeitet, die graphische Darstellung erweitert und verbessert sowie auch die Menüs neu und übersichtlicher sortiert. Allerdings war das 1. Release v1.0 erst mal ziemlich ärgerlich für Stammkunden (wie mich): Das Ultimate-Probeabo funktionierte nicht, in „Redshift Sky Pro“ fehlten Funktionen aus der Vorgänger Redshift-App und viele Stammkunden (wie ich) mögen absolut kein Abo-Geschäftsmodell. Bis dahin gab’s erst mal 2 Sterne von mir.
Inzwischen sind mit den Updates 1.0.2 und 1.0.3 die ärgsten Ärgernisse behoben und „Redshift Sky Pro“ gefällt mir als Nachfolger von „Redshift“ wieder richtig gut - trotzdem zunächst nur 4 Sterne. Den 5. Stern gab‘s von mir erst, nachdem der Abo-Zwang für „Ultimate“ aufhörte und auch zusätzlich eine einmalige Kauf-Option für „Ultimate“ angeboten wurde. Danke, alles perfekt!

### 5/5 — Good

*2025-02-13*

Too much reliance on Constellations

### 4/5 — Immer noch unscharf leider…

*2024-08-24*

Vor zwei Jahren habe ich schon eine Bewertung abgegeben. Die App gefällt mir immer noch richtig gut, allerdings verstehe ich immer noch nicht, warum die Erde bei „Standort festlegen“ auch noch zwei Jahren immer noch so unscharf bzw. verpixelt ist. Vielleicht können mir die Entwickler dazu einmal eine Info geben… verstehe ich in der heutigen Zeit nicht.

### 4/5 — Galaxien

*2024-08-14*

Ich würde es toll finden, wenn man z.B die Andromeda Galaxie anfliegen könnte, und andere Galaxien, einige Sterne die weiter entfernt sind lassen sich leider auch nicht anfliegen, wäre gut wenn es da keine Grenzen gäbe. Oder würde das mit der Ultimate funktionieren?

**Developer response:** Sehr geehrter Kunde, vielen Dank für Ihre Rezension. MIt der Ultimate Version können Sie auch zur Andromeda Galaxie fliegen. Andere, noch weiter entfernte Galaxien können jedoch nicht angeflogen werden

### 5/5 — Отличный планетарий

*2024-08-08*

После последнего обновления при запуске постоянно отображаются картинки зверей созвездий. Даже если их принудительно отключить в настройках, они снова появятся при следующем запуске.

### 4/5 — JWST is missing?

*2024-07-27*

I tried to find the James Webb Space Teleskope, but couldn‘t find it.

## Frequently asked questions about The Sky Pro by Redshift

### What does The Sky Pro by Redshift do?

The Sky Pro by Redshift is a professional astronomy app that serves as both a tool and a knowledge base for exploring cosmic objects. It allows users to discover planets, moons, stars, and deep-sky objects, learn about them, and observe celestial events.

### What are the key features of The Sky Pro?

Key features include an award-winning planetarium with over 100,000 stars, accurate simulation of celestial phenomena like eclipses and conjunctions, real-time satellite tracking, augmented reality, and 3D models of celestial bodies. It also offers educational content and planning tools for observations.

### Is The Sky Pro free to use?

The base app is free with in-app purchases. An optional 'The Sky Ultimate' subscription unlocks advanced features such as a much larger database, online access to billions of stars, telescope control, and professional solar eclipse mapping.

### What devices is The Sky Pro compatible with?

The app description mentions Apple Watch connectivity, suggesting compatibility with iOS devices. The mention of telescope control for Meade or Celestron telescopes implies it's designed for users with such equipment, typically connected to computers or tablets.

### How can I use The Sky Pro for planning observations?

The app provides tools to determine rising and setting times for celestial objects, plan observations, and features a calendar for tracking events like solar and lunar eclipses. The 'Today's Night Sky' and 'My Favorites' features also help users see what is currently visible.

## Version history (last 5 releases)

### 1.6.7 — 2025-07-15

Thank you for using this app — now renamed “The Sky Pro by Redshift”! This version includes bug fixes and new features that make our product even better.

### 1.6.6 — 2025-06-19

Thank you for using this app — now renamed “The Sky Pro by Redshift”! This version includes bug fixes and new features that make our product even better.
In this version, we have improved the display of comets and the sky at dusk.
We have also improved the display of animations and updated the daylight saving time database.

### 1.6.5 — 2025-01-21

Thank you for using Redshift Sky! This release contains bug fixes and new features that make our product even better. Ultimate users can now perform 3D flights to spacecraft orbiting the Earth.

### 1.6.4 — 2024-12-12

Thank you for using Redshift Sky - now in cooperation with THAMES & KOSMOS!
This release contains bug fixes and new features that make our product even better. We present a comprehensive review of the total solar eclipse on April 8, 2024.  
In this version we have fixed problems with opening external links and with restoring of subscriptions.

### 1.6.3 — 2024-08-13

Thank you for using Redshift Sky! This release contains bug fixes and new features that make our product even better. 
You now have more options to get the Ultimate upgrade: A monthly subscription and a one-time payment for unlimited use.
In Redshift Sky Ultimate, an issue when downloading USNO-B1.0 and GAIA DR3 objects has been fixed.

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## Related topics

[the sky pro by redshift](https://appshunter.io/ios/topics/the-sky-pro-by-redshift) · [the sky by redshift](https://appshunter.io/ios/topics/the-sky-by-redshift) · [redshift](https://appshunter.io/ios/topics/redshift)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*