Comparison

DeepTime for Geology vs Mass.Shift

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

Head to head
About

DeepTime for Geology

Explore an interactive geological time scale with detailed information on each unit, including GSSP definitions and color codes. Search for terms and view GSSPs on a global map. Ideal for geologists, students, and Earth history enthusiasts.

Highlights
  • Interactive geological time scale
  • Detailed GSSP definitions
  • CMYK and RGB color codes
  • Searchable by name or age
  • Global GSSP map integration
  • Tips for using time terms
Features
Read full description

DeepTime puts geological time at your fingertips. DeepTime is a full interactive version of the latest geological time scale: tap on any time unit to see more detail about it, including how its GSSP (golden spike) is defined. It even has the CMYK and RGB color codes for every time unit, great for when you need to have the right color for a map or chart. Even more, it is completely searchable by name or age. Come across an unfamiliar time term in an older paper? Search for it, and you'll see how it relates to the modern time scale.  What's more is that all the GSSPs (the golden spikes) are shown on a gorgeous geological map of the world (courtesy of macrostrat.org), which shows their context in stunning detail. Tips for using time terms are also included with simple examples. Whether you are a geologist, a student, a science writer, or just a fan of Earth history, DeepTime will become your go-to resource for understanding geological time.

About

Mass.Shift

Features
Read full description

MassShift allows you to explore the physical reality of living on other planets. This application provides a suite of tools to calculate how your weight, age, and height would change across various celestial bodies in our solar system. Core Features: > Weight and Mass Converter: Discover your exact weight on Mars, Jupiter, the Moon, and other planets based on gravitational differences. > Age and Time Tracking: Calculate your age according to the orbital periods of different planets and see when your next galactic birthday occurs. > Height Comparison: Visualize how your height changes relative to gravitational constants across the galaxy. > Physics Simulations: Interact with jump, fall, and orbit simulators to experience the tangible effects of varying gravity levels. > Planetary Survival Guides: Access detailed scientific facts and survival information for every planet in the solar system. > User Profiles: Save metrics for multiple users to quickly switch between data sets and comparisons. Designed for students, teachers, and space enthusiasts, MassShift turns complex planetary physics into an accessible and interactive experience. Learn about the mechanics of our solar system through precise calculations and visual simulations. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

DeepTime for Geology3 screens
Mass.Shift4 screens

Verdict

The call

The clearest difference is in-app purchases: DeepTime for Geology at none against Mass.Shift's 2. Mass.Shift's advantage is iOS requirement (13.0 vs 26.0). On price, ads 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

Both are free to download. Mass.Shift sells 2 in-app purchases, starting at $0.99 per month. DeepTime for Geology asks for nothing beyond the download.

Scorecard2 real differences · 8 level
DeepTime for Geology versus Mass.Shift: the parameters behind the verdict, then further details
ParameterDeepTime for GeologyMass.Shift
PriceFreeFree
Rating5.0 (7 ratings) — better—
Positive reviews80.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.013.0 — better
Further details — not scored
Size1 MB70 MB
Age rating4+4+
DeveloperHunt Mountain SoftwareADAVII (PVT) LTD

In-app purchases

None

DeepTime for Geology

No in-app purchases

2 purchases

Mass.Shift

Subscriptions1
  • MassShift Monthly$0.991 Month
One-time1
  • MassShift Lifetime$9.99

Questions

Is DeepTime for Geology free?
DeepTime for Geology is free to download, with no in-app purchases.
Is Mass.Shift free?
Mass.Shift is free to download, with in-app purchases available.
Do DeepTime for Geology or Mass.Shift have ads?
Neither DeepTime for Geology nor Mass.Shift shows ads.

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