Comparison

Mars Info vs Arbitrary Triangle PRO

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

Head to head
About

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.

Highlights
  • Interactive 3D globe with gesture controls
  • Pinpoint 80+ interesting Martian locations
  • Detailed information on locations
  • Zoom, rotate, and tilt controls
  • List of selectable locations
Features
Read full description

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.

About

Arbitrary Triangle PRO

This app calculates all unknown quantities of an arbitrary triangle. It displays the formulas used and provides step-by-step solutions, supporting decimals and fractions. Calculations are saved in history and can be shared.

Highlights
  • Calculates all triangle quantities
  • Displays formulas used
  • Step-by-step solutions
  • Supports decimals and fractions
  • Calculation history
  • Shareable solutions
Features
Read full description

The best app to calculate all quantities of an arbitrary triangle. You must enter some quantities like two angles and one length. The algorithm searches the formulas of the missing quantities, shows them and calculates the results. The length of the decimal place can be changed. The algorithm shows when rounding or wrong values lead to an opposition. Decimals and fractions are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Contents ] - all important quantities for the arbitrary triangle - formulas for all important quantities of an arbitrary triangle - infographic to illustrate the topic - search bar to find the desired quantity - history function to save the input - detailed solution - positive numbers, decimals and fractions 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 (e.g. negative lengths), the affected field will be highlighted red - if a value is no number, it is highlighted in 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 [ Math conditions ] - each value must be greater than zero - each angle must be less than 180° - the sum of two sides must always be greater than the length of the third side

Screenshots

Mars Info4 screens
Arbitrary Triangle PRO4 screens

Verdict

The call

The clearest difference is rating: Arbitrary Triangle PRO at 5.0 against Mars Info's 4.3. Arbitrary Triangle PRO also leads on price ($2.99 vs $6.99) and update cadence (every 3 weeks vs every 2 months). Mars Info's advantage is ratings volume (159 vs 1). 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

CostPrice · In-app purchases · Ads · Monetization

Mars Info costs $6.99 and Arbitrary Triangle PRO $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Arbitrary Triangle PRO holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Mars Info has 159 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Mars Info ships an update every 2 months, Arbitrary Triangle PRO every 3 weeks. The most recent releases landed on November 2, 2026 and October 21, 2026 respectively.

Scorecard6 real differences · 4 level
Mars Info versus Arbitrary Triangle PRO: the parameters behind the verdict, then further details
ParameterMars InfoArbitrary Triangle PRO
Price$6.99$2.99 — better
Rating4.3 (159 ratings)5.0 (1 ratings) — better
Positive reviews41.7% of reviews—
Number of ratings159 — better1
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, Mac, Apple TV — betteriPhone, iPad, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size212 MB182 MB
Age rating4+4+
DeveloperViktor GoltvyanytsyaGlindemann, Sennoun, Langer GbR

Customer experience

Mars Info

All ratings159 ratings
Positive81.8%
Neutral5.0%
Negative13.2%
Written reviews12 reviews
Positive41.7%
Neutral8.3%
Negative50.0%

Arbitrary Triangle PRO

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Mars Info

No in-app purchases

None

Arbitrary Triangle PRO

No in-app purchases

Questions

Is Mars Info free?
Mars Info costs $6.99, with no in-app purchases.
Is Arbitrary Triangle PRO free?
Arbitrary Triangle PRO costs $2.99, with no in-app purchases.
Which has better reviews, Mars Info or Arbitrary Triangle PRO?
Arbitrary Triangle PRO is rated higher. Mars Info averages 4.3 out of 5 from 159 ratings, while Arbitrary Triangle PRO averages 5.0 from 1 ratings.
Do Mars Info or Arbitrary Triangle PRO have ads?
Neither Mars Info nor Arbitrary Triangle PRO shows ads.
Which is updated more often, Mars Info or Arbitrary Triangle PRO?
Mars Info ships an update every 2 months, and Arbitrary Triangle PRO every 3 weeks. Most recently, Mars Info was updated on November 2, 2026 and Arbitrary Triangle PRO on October 21, 2026.

Other comparisons