# Mars Info vs Arbitrary Triangle PRO

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.

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.

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.

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.

## The numbers

| Metric | Mars Info | Arbitrary Triangle PRO |
| --- | --- | --- |
| Price | $6.99 | **$2.99** |
| Rating | [4.3 (159 ratings)](https://appshunter.io/ios/app/mars-info/id1088383309/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/arbitrary-triangle-pro/id1617819308/reviews)** |
| Number of ratings | **159** | 1 |
| Positive reviews | 41.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Paid |
| Size | 212 MB | 182 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | **iPhone, iPad, Mac, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Viktor Goltvyanytsya](https://appshunter.io/developer/556365139) | [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809) |

## What reviewers say

### Mars Info

[App page](https://appshunter.io/ios/app/mars-info/id1088383309)

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:** Vision Pro support

**In-app purchases:** none


### Arbitrary Triangle PRO

[App page](https://appshunter.io/ios/app/arbitrary-triangle-pro/id1617819308)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*