Astro Kit vs Compass 54 Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Astro Kit
This utility app assists in telescope setup by providing essential information like GPS coordinates and universal time. It also includes a compass and calculates the local hour angle for Polaris. Designed for amateur astronomers, it simplifies the alignment process.
- GPS coordinates
- Compass functionality
- Universal time display
- Polaris local hour angle computation
- Telescope alignment assistance
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Astro Kit is intended to provide useful informations while setting up a telescope. - gps coordinates - compass - universal time - compute polaris local hour angle
Compass 54 Pro
This app provides a real compass, location data, weather updates, date and time, and map functionality. It displays real-time orientation to magnetic fields and offers various coordinate systems and unit conversions.
- Real compass with magnetic field orientation
- Location coordinates, course, speed, and altitude
- Current weather temperature, humidity, and pressure
- Date, time, and GMT time display
- Standard, satellite, and hybrid map views
- Multiple GPS coordinate systems (UTM, MGRS, etc.)
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You spend time on searching everyday usable information?! "Compass 54 Pro" is here to help you! "Compass 54 Pro" is a real compass! It shows device real-time orientation to magnetic fields. "Compass 54 Pro" is a package of common, but important data. "Compass 54 Pro" application includes: 1. Compass -- Shows device real-time orientation to magnetic fields. -- Ability to switch between true and magnetic North. 2. Location -- Location coordinates (longitude, latitude). -- Course -- Speed -- Altitude -- Ability to switch between mph, feet units and kmh, meter units. 3. Weather -- Temperature information. -- Humidity -- Pressure -- Ability to switch between Celsius and Fahrenheit. 4. Date -- Current date and time. -- Current GMT time. -- Ability to switch between 12-hour and 24-hour format. 5. Map -- Standard, satellite, hybrid maps. -- Current location. -- Location tracking. Supports HD Retina Display. Location service provides information using global positioning system (GPS). The weather data collected by Yahoo! Weather API. GPS Coordinates - UTM (Universal Transverse Mercator) - MGRS (Military Grid Reference System - Dec Degs (DD.dddddd°) - Dec Degs Micro (DD.dddddd "N, S, E, W") - Dec Mins (DDMM.mmmm) - Deg Min Secs (DD°MM'SS.sss") - Dec Mins Secs (DDMMSS.sss") ***PLEASE NOTE*** THIS APPLICATION DOES NOT WORK WITH IPOD TOUCH, IPHONE 3G, ONLY WITH IPHONE 3GS, IPHONE 4G AND IPAD, IPAD2 DEVICES. THERE IS NO BUILT-IN MAGNETOMETER IN IPOD TOUCH, IPHONE 3G. Enjoy Compass 54 Pro!!!
Screenshots
Verdict
The clearest difference is rating: Astro Kit at 4.6 against Compass 54 Pro's 3.2. Astro Kit also leads on in-app purchases (none vs 1) and review sentiment (50% vs 40%). Compass 54 Pro's advantage is iOS requirement (9.0 vs 17.6). On price, ratings volume, update cadence 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
Both are free to download. Compass 54 Pro sells 1 one-off in-app purchase. Astro Kit asks for nothing beyond the download.
Astro Kit holds the better App Store score, 4.6 against 3.2. Both are backed by a comparable volume of ratings — 50 and 43 respectively. Written reviews point the same way: 50% of Astro Kit's written reviews are positive against 40% of Compass 54 Pro's.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on June 1, 2026 and July 18, 2026 respectively.
| Parameter | Astro Kit | Compass 54 Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (50 ratings) — better | 3.2 (43 ratings) |
| Positive reviews | 50.0% of reviews — better | 40.0% of reviews |
| Number of ratings | 50 — better | 43 |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | Jerome Diaz | Elen Bekzadyan |
Customer experience
Astro Kit
Compass 54 Pro
Bugs and requests
Astro Kit
Not enough reviews yet to summarise bugs or requests.
Compass 54 Pro
Reported bugs
38 issues- Weather section shows 'No Internet Connection' despite being online
- App crashes when enabling camera flash
- Homes.com ad locks display on newer devices
- Camera tab doesn't properly switch settings
- Compass dial jumps or jitters
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- In-app purchase requires multiple attempts and restore
- App crashes on iPhone 12 & iPad 6
- Compass works only when Wi-Fi is off
- Inconsistent results between iPad and iPhone
- Magnetic north doesn't work
- Map doesn't work in Pro version
- Storm Ap advertisement opens every time
- Cannot remove ads in Pro version
- Heading +/- 180 degrees
- Heading varies by 35-40 degrees between devices
- Altimeter and temperature not received after update
- App needs constant recalibration
- Altimeter and coordinate display do not function in Pro
- Location services require 'always' setting
- Cannot calibrate properly
- North indication is 180 degrees off
- Map shows entire US, nav button unclear
- Speedo, altimeter, weather conditions show N/A
- +/- 40 degrees inaccuracy
- Speedo does not work
- Altimeter does not work on iPad 2
- GPS information linking problems
- North is off by 40 degrees on iPad
- Weather, altitude do not display on iPad
- Compass interference warnings are too prominent
- North arrow is 45 degrees from actual north
- Temp does not work
- Compass does not point North on iPad
- Altimeter does not work
- Speedometer does not function
- Figure 8 calibration needed every time
- Speed part stays blank
- Travels at 5.98 MPH while stationary
Requested features
11 requests- More updates and features
- More child-friendly themes
- Show elevation
- More detailed weather (5-day forecast, hourly temps)
- Switch between Celsius and Fahrenheit
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- Rotate to landscape mode on iPads and larger iPhones
- Add analog clock instead of GMT
- Manual declination settings
- Option to change from DMS to decimal
- Save current location feature
- More options in settings (metric/imperial mix)
In-app purchases
Astro Kit
No in-app purchases
Compass 54 Pro
- Remove Ads.$2.99
Questions
Is Astro Kit free?
Is Compass 54 Pro free?
Which has better reviews, Astro Kit or Compass 54 Pro?
Do Astro Kit or Compass 54 Pro have ads?
Which is updated more often, Astro Kit or Compass 54 Pro?
Other comparisons
