Comparison

SD Talks vs Earth and Science

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

Head to head
About

SD Talks

Features
Read full description

The UNSSC SD Talks App is a service by the UN System Staff College, functioning as a resource particularly for UN personnel as well as those interested in the current processes of the UN. It is a platform for knowledge sharing and discussions on all the three pillars of the United Nations’ work: peace and security, development and human rights. The interviews with high-level UN personnel include aspects on the post-2015 process, the 2030 Agenda for Sustainable Development as well as the UN Fit for Purpose strategy among others. It provides expert opinions and current information not only on the processes that led to the adoption of the Agenda 2030 during the UN Sustainable Development Summit in September 2015 in New York but also operational measures to successfully implement each of the 17 Sustainable Development Goals, from addressing inequalities to the implementation and measurement of effective governance and peaceful societies. The SD Talks presents the opportunity for UN executives to talk about the challenges the United Nations’ face in making the UN fit for purpose, the role of UN Country Teams, latest developments in disaster risk reduction and many more within the context of the Agenda 2030. The UNSSC SD Talks is an integral part to realize UNSSC’s mission: sharing knowledge, developing leaders!

About

Earth and Science

Explore Earth, space, and life sciences through interactive animations and detailed images. This educational app simplifies complex concepts across biology, geology, and astronomy with over twenty chapters.

Highlights
  • Interactive animations
  • Detailed images of structures
  • Covers biology, geology, and astronomy
  • Explains complex scientific phenomena
  • Over twenty chapters of content
Features
Read full description

Earth and Science is an educational app that explains key concepts in the field of Earth and Life Sciences. With over twenty chapters, Earth and Science uses interactive animations to present important concepts in a simple and straightforward way. By presenting theories and relating concepts, Earth and Science explains some of the most interesting phenomena in the Earth and Life Sciences. Earth and Science allows to observe the interiors of structures through detailed images, helping to understand complex processes in action. Covering such diverse fields of science as Biology, Geology and Astronomy, some of the chapters include: The Atom and the Atomic Theory The Mitochondria and Cellular Respiration Animal and Plant Cells and their Organelles The Neuron and Synapses The Structure of a Plant The Internal Structure of the Earth Plate Tectonics Volcanos and Earthquakes Glaciers and the Formation of Landscapes The Water Cycle The Layers of the Sun The Sizes of the Planets The Structure of the Planets The Phases of the Moon The Seasons ISBN: 978-989-97421-4-7

Screenshots

SD Talks4 screens
Earth and Science4 screens

Verdict

The call

The clearest difference is price: SD Talks at Free against Earth and Science's $4.99. SD Talks also leads on update cadence (every 5 months vs every 15 months). On ads, in-app purchases, device support and iOS requirement 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

SD Talks is free to download; Earth and Science costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SD Talks ships an update every 5 months, Earth and Science every 15 months. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level
SD Talks versus Earth and Science: the parameters behind the verdict, then further details
ParameterSD TalksEarth and Science
PriceFree — better$4.99
Rating—3.5 (4 ratings) — better
Positive reviews—16.7% of reviews
Number of ratings—4 — better
Update frequencyEvery 5 months — betterEvery 15 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS8.0 — better9.0
Further details — not scored
Size8 MB188 MB
Age rating9+4+
DeveloperUNSSCLandka

In-app purchases

None

SD Talks

No in-app purchases

None

Earth and Science

No in-app purchases

Questions

Is SD Talks free?
SD Talks is free to download, with no in-app purchases.
Is Earth and Science free?
Earth and Science costs $4.99, with no in-app purchases.
Do SD Talks or Earth and Science have ads?
Neither SD Talks nor Earth and Science shows ads.
Which is updated more often, SD Talks or Earth and Science?
SD Talks ships an update every 5 months, and Earth and Science every 15 months. Most recently, SD Talks was updated on November 11, 2026 and Earth and Science on November 3, 2026.

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