Graycode vs Satellite Tracker Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Graycode
This utility converts numbers between decimal, hexadecimal, binary, and Gray code formats. Changes to one value automatically update the others, making it a convenient tool for engineers. It also features an animated demonstration of the Tower of Hanoi puzzle.
- Decimal, hex, binary, Gray code conversion
- Real-time updates
- Handy calculator for engineers
- Animated Tower of Hanoi solution
- Supports iPhone, iPad, iPod
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This app is used to convert numbers among decimal, hex, binary and gray code. If a user changes any one of these numbers, the other ones will change accordingly. It is a handy calculator for engineers to obtain the binary or gray code values from a decimal, or vise versa. In addition, an animated solution of a Hanoi Tower with three disks is also demonstrated based on the input number.
Satellite Tracker Pro
Track thousands of satellites in real-time with a 3D Earth model and augmented reality sky gazing. Plan your stargazing sessions with pass predictions and receive personalized notifications for your favorite satellites.
- Real-time 3D Earth model with satellite orbits
- Augmented reality (AR) sky gazing for satellite location
- Next passes feature for stargazing planning
- Personalized notifications for satellite passes
- Interactive satellite radar with detailed information
- In-depth satellite data
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Explore the Cosmos with Real-Time Satellite Tracker: Your Ultimate Mobile Space Observatory Discover the intriguing world of satellite tracking with Real-Time Satellite Tracker, the most sophisticated and all-encompassing app of its kind. Transform your smartphone into a state-of-the-art celestial observatory and immerse yourself in the wonders of outer space. • 3D Earth Model: Interact with thousands of satellites in real-time as they orbit the Earth on our stunning 3D model. Zoom, rotate, and investigate the globe from the perspective of a satellite. • AR Sky Gazing: Point your device skyward and let our powerful AR mode guide you to effortlessly locate and track satellites. A real-time overlay reveals each satellite's trajectory and position. • Plan Your Stargazing: Use our next passes feature to schedule perfect stargazing nights, complete with precise date and time predictions for the upcoming visible passes of your favorite satellites. • Personalized Notifications & Favorites: Save your top satellites and receive tailored notifications about their forthcoming passes, ensuring you never miss an opportunity to witness them in the sky. • Interactive Satellite Radar: Utilize our cutting-edge radar to detect nearby satellites, access vital information on altitude, speed, and distance from your location. • In-Depth Satellite Data: Delve into detailed data on each satellite. Download Real-Time Satellite Tracker now and embark on an extraordinary journey through the cosmos!
Screenshots
Verdict
The clearest difference is price: Satellite Tracker Pro at Free against Graycode's $2.99. Satellite Tracker Pro also leads on rating (4.3 vs 3.0) and ratings volume (65 vs 2). Graycode's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On review sentiment, update cadence, ads and in-app purchases 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
Satellite Tracker Pro is free to download; Graycode costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Satellite Tracker Pro holds the better App Store score, 4.3 against 3.0. That said, the two scores are not equally well evidenced: Satellite Tracker Pro has 65 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 67% of Graycode's written reviews are positive against 72% of Satellite Tracker Pro's.
Graycode ships an update every 10 months, Satellite Tracker Pro every 11 months. The most recent releases landed on September 25, 2026 and October 7, 2026 respectively.
| Parameter | Graycode | Satellite Tracker Pro |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.0 (2 ratings) | 4.3 (65 ratings) — better |
| Positive reviews | 66.7% of reviews | 72.1% of reviews — better |
| Number of ratings | 2 | 65 — better |
| Update frequency | Every 10 months — better | Every 11 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 58 MB |
| Age rating | 4+ | 4+ |
| Developer | Duo Pisceses, Inc. | Kornienko Vyacheslav |
Customer experience
Graycode
Satellite Tracker Pro
Bugs and requests
Graycode
Not enough reviews yet to summarise bugs or requests.
Satellite Tracker Pro
Reported bugs
6 issues- AR mode camera only turned on first time
- Globe movement issues
- Map is jittery and bogged down with data
- Cannot make Earth move smoothly
- Cannot see satellite itself
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- Doesn't show satellites above location
Requested features
24 requests- Filter to see selected satellites
- Preset filters for AR function
- Section for repeater info (on board Yes/No, PL tone, uplink, downlink)
- Add GEO satellites
- Color code different satellites
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- Camera function with real overlay
- Option to see non-visible passes
- See satellite information from Wikipedia/other sources
- See satellites on the other side of the Earth
- Amateur radio info (frequencies, mode, receive/transmit)
- Move Earth with finger better
- Home page menu/landing page
- Customization of widget tracking targets
- Indication of Starlink train visibility
- View Starlink groups on globe and transit times
- Option to view all satellites or select groups
- Show satellite icon instead of dot
- Optimization of graphics
- Favorite a satellite
- Automatically take user to live map spot
- Small video tutorial on app usage
- Full NORAD database access
- Favorite ALL Starlink satellites
- Easier globe manipulation
In-app purchases
Graycode
No in-app purchases
Satellite Tracker Pro
No in-app purchases
Questions
Is Graycode free?
Is Satellite Tracker Pro free?
Which has better reviews, Graycode or Satellite Tracker Pro?
Do Graycode or Satellite Tracker Pro have ads?
Which is updated more often, Graycode or Satellite Tracker Pro?
Other comparisons
