Mars Info vs Unit Circle Calculator PRO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mars Info
Explore the Red Planet with an interactive 3D globe. Discover and learn about key Martian locations like volcanoes, craters, and mountains. View detailed information including size and coordinates for each point of interest.
- Interactive 3D globe with gesture controls
- Pinpoint 80+ interesting Martian locations
- Detailed information on locations
- Zoom, rotate, and tilt controls
- List of selectable locations
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Explore Mars using simple gestures to rotate a globe, tilt, zoom and select locations. Credits - Viking Orbiter MDIM 2.1 map of Mars - NASA NASA's Scientific Visualization Studio: GMM-3 MOLA (Mars Orbiter Laser Altimeter) Topography map GMM-3 Free-Air Mars Gravity map GMM-3 Bouguer Mars Gravity map GMM-3 Crustal Mars Thickness map Features: - Ability to pinpoint about 80 the most interesting areas on the map of Mars, including volcanos, craters, plains, mountains, spacecrafts. - Displaying some information about the location, such as its name, type, short description, size and coordinates. - Ability to select locations on the 3D globe and on the plain list. - Zoom, rotation, tilt of the globe.
Unit Circle Calculator PRO
Visualize and understand the unit circle with step-by-step calculations, diagrams, and animations. Supports various input formats including negative values, decimals, fractions, and pi. Save, share, and revisit past calculations.
- Unit circle visualization
- Step-by-step calculation
- Diagrams and animations
- Supports negative values, decimals, fractions, and π
- Calculation history
- Shareable solutions
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The unit circle is visualized and explained with calculation steps, diagrams and animations. Enter the radian or the angle α to calculate the results. Negative values, decimals, fractions and π are supported. The solution is displayed step by step. All calculations are saved in the history. The solution can be shared. [ Contents] - all important quantities for the unit circle - results are also calculated as π-value - animation to show the angle α - diagrams for sine and cosine - history function to save the input - detailed solution - negative values, decimal numbers, fractions and π are supported - no ads! [ Usage ] - there are fields for entering values using a special keyboard - press the check mark button at the bottom right to start the calculation - if values are missing, all fields will be marked orange - if the values are wrong, the affected field will be highlighted red - the entries in the history can be deleted or sorted - if you select an entry in the history, it will be automatically loaded for the calculation - the whole history can be deleted by pressing a button - solutions can be shared
Screenshots
Verdict
The clearest difference is review sentiment: Unit Circle Calculator PRO at 100% against Mars Info's 42%. Unit Circle Calculator PRO also leads on rating (4.7 vs 4.3) and price ($1.99 vs $6.99). Mars Info's advantage is ratings volume (159 vs 25). On ads, in-app purchases and device support 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
Mars Info costs $6.99 and Unit Circle Calculator PRO $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Unit Circle Calculator PRO holds the better App Store score, 4.7 against 4.3. That said, the two scores are not equally well evidenced: Mars Info has 159 ratings behind it against 25, so its average is the more settled of the two. Written reviews point the same way: 42% of Mars Info's written reviews are positive against 100% of Unit Circle Calculator PRO's.
Mars Info ships an update every 2 months, Unit Circle Calculator PRO monthly. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.
| Parameter | Mars Info | Unit Circle Calculator PRO |
|---|---|---|
| Price | $6.99 | $1.99 — better |
| Rating | 4.3 (159 ratings) | 4.7 (25 ratings) — better |
| Positive reviews | 41.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 159 — better | 25 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, Mac, Apple TV — better | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 212 MB | 181 MB |
| Age rating | 4+ | 4+ |
| Developer | Viktor Goltvyanytsya | Glindemann, Sennoun, Langer GbR |
Customer experience
Mars Info
Unit Circle Calculator PRO
In-app purchases
Mars Info
No in-app purchases
Unit Circle Calculator PRO
No in-app purchases
Questions
Is Mars Info free?
Is Unit Circle Calculator PRO free?
Which has better reviews, Mars Info or Unit Circle Calculator PRO?
Do Mars Info or Unit Circle Calculator PRO have ads?
Which is updated more often, Mars Info or Unit Circle Calculator PRO?
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