Mars Book vs Sample for Science
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mars Book
Read full descriptionHide full description
The Mars Book is an app that is dedicated for observing Mars which will make close approach in summer 2020. Mars will come close to Earth from September 2020 through October 2020. Closest approach will take place on October 6, 2020. Mars Book is a highly useful Mars observing app which will indicate the location of Mars visible in the sky. It shows you why Mars Close Approach will take place, and it is explained readily using animated illustrations and star charts at a viewpoint from outer Space. Mars Close Approaches taking place 23 times from the year 2003 through 2050 will be displayed and apparent retrograde motion of Mars will be displayed. Enjoy Mars Close Approach this summer with the Mars Book app!
Sample for Science
Read full descriptionHide full description
The application is open to the general public, anyone can use it. No account creation required. The user can enter the application by logging in with their Google account or AppleID. The application was designed to distribute and reuse scientific samples that would otherwise be discarded. There is no paid content in the app.
Screenshots
Verdict
The clearest difference is update cadence: Sample for Science at every 6 weeks against Mars Book's every 13 months. Mars Book's advantage is iOS requirement (9.0 vs 12.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Mars Book ships an update every 13 months, Sample for Science every 6 weeks. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.
| Parameter | Mars Book | Sample for Science |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 13 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 14 MB | 58 MB |
| Age rating | 4+ | +4 |
| Developer | Vixen Co.,Ltd. | Universidade Federal Fluminense - UFF |
In-app purchases
Mars Book
No in-app purchases
Sample for Science
No in-app purchases
Questions
Is Mars Book free?
Is Sample for Science free?
Do Mars Book or Sample for Science have ads?
Which is updated more often, Mars Book or Sample for Science?
Other comparisons
