Mars Info vs Simple Logarithm 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.
Simple Logarithm PRO
This app simplifies complex logarithm and exponentiation calculations with step-by-step solutions. It supports various input types, including decimals, fractions, and negative values, and provides a history of all calculations.
- Logarithm and exponentiation modes
- Step-by-step solution display
- Support for decimals, fractions, and negative values
- Calculation history
- Transformation between logarithm and exponentiation
- Logarithm rules infographic
- Solution sharing
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Using logarithm is a complicated task, but this app helps out! You can choose between 4 standard shapes of this topic. Then you can enter what you have to calculate what you need - base, exponent, antilogarithm, the logarithmic result, even the x-value of a term as exponent. The connection between logarithm and exponentiation is shown aswell. An infographic gives a deeper insight into some calculation rules of the logarithm. Decimals, fractions and negative values are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Contents ] - modes for logarithm - modes for exponentiation - exponent, base and some more values can be entered - results are calculated and shown in detail - transformations between logarithm and exponentiation are taken into account - shortened list of logarithm rules - history function to save the input - detailed solution - negative values, decimal numbers 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, the relevant field is highlighted in yellow - if the values are wrong, the affected field will be 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 - touching the question mark button displays information about the topic
Screenshots
Verdict
The clearest difference is review sentiment: Mars Info at 42% against Simple Logarithm PRO's 0%. Simple Logarithm PRO's advantage is price ($1.99 vs $6.99) and update cadence (monthly vs every 2 months). 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 Simple Logarithm PRO $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Mars Info ships an update every 2 months, Simple Logarithm PRO monthly. The most recent releases landed on October 21, 2026 and October 18, 2026 respectively.
| Parameter | Mars Info | Simple Logarithm PRO |
|---|---|---|
| Price | $6.99 | $1.99 — better |
| Rating | 4.3 (159 ratings) — better | — |
| Positive reviews | 41.7% of reviews — better | 0.0% of reviews |
| Number of ratings | 159 — better | — |
| 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 | 180 MB |
| Age rating | 4+ | 4+ |
| Developer | Viktor Goltvyanytsya | Glindemann, Sennoun, Langer GbR |
Customer experience
Mars Info
Simple Logarithm PRO
In-app purchases
Mars Info
No in-app purchases
Simple Logarithm PRO
No in-app purchases
Questions
Is Mars Info free?
Is Simple Logarithm PRO free?
Do Mars Info or Simple Logarithm PRO have ads?
Which is updated more often, Mars Info or Simple Logarithm PRO?
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