Comparison

CO₂ AR vs Climate Change Explorer

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

Head to head
About

CO₂ AR

Features
Read full description

When burning coal, oil and gas, carbon dioxide—also known as CO₂—is released into the atmosphere. To date, CO₂ emissions have risen dramatically. In the short industrial history of just 250 years, humans have increased the amount of CO₂ in the atmosphere by around 40 %. An alarming value unprecedented on Earth in the past four million years. Humankind has accumulated CO₂ and other greenhouse gases in the atmosphere which has already increased average global temperature by one degree Celsius since 1750. Our app allows you to visualise the history of CO₂ emissions—and also the possible futures. By combining data from the Carbon Dioxide Information Analysis Center (CDIAC) and the baseline projections of CO₂ emissions by the Potsdam Institute for Climate Impact Research (PIK), we were able to visualize the CO₂ emissions from 1751 to 2100 on a highly detailed geographical level. The app also provides you with two possible CO₂ futures: one with a policy of measures against climate change—and one without.

About

Climate Change Explorer

Features
Read full description

At Historic Environment Scotland, understanding how changes in our climate are impacting our organisation is central to our climate action ambitions. Changes in our climate, such as the increasing frequency and intensity of extreme weather events, introduces a range of physical climate risks to our organisation. This includes risks to our people, the natural capital of our properties, our operations and our physical assets. There are further ‘transition’ climate risks introduced as society takes actions and moves towards a low-carbon economy. Understanding these risks and impacts, and adapting to them, is a key deliverable of our Climate Action Plan with work currently underway. This app lets you explore Edinburgh, Scotland’s capital city and a UNESCO World Heritage site, and how climate change is impacting some of its historic sites. The app is based on a 3D model of the city created for the Scottish Ten project, which sought to accurately record Scotland’s World Heritage sites in 3D using cutting edge technologies, to help support their conservation, management, interpretation and virtual accessibility. FEEDBACK We're always looking for feedback so please send any ideas on how we can improve the app to digitaldocumentation@hes.scot or rate us in the app store.

Screenshots

CO₂ AR2 screens
Climate Change Explorer4 screens

Verdict

The call

The clearest difference is update cadence: CO₂ AR at daily against Climate Change Explorer's every 50 months. CO₂ AR also leads on iOS requirement (11.0 vs 15.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

CO₂ AR ships an update daily, Climate Change Explorer every 50 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 4 level
CO₂ AR versus Climate Change Explorer: the parameters behind the verdict, then further details
ParameterCO₂ ARClimate Change Explorer
PriceFreeFree
Update frequencyDaily — betterEvery 50 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size95 MB1017 MB
Age rating4+4+
DeveloperEkkehard PetzoldHistoric Environment Scotland

In-app purchases

None

CO₂ AR

No in-app purchases

None

Climate Change Explorer

No in-app purchases

Questions

Is CO₂ AR free?
CO₂ AR is free to download, with no in-app purchases.
Is Climate Change Explorer free?
Climate Change Explorer is free to download, with no in-app purchases.
Do CO₂ AR or Climate Change Explorer have ads?
Neither CO₂ AR nor Climate Change Explorer shows ads.
Which is updated more often, CO₂ AR or Climate Change Explorer?
CO₂ AR ships an update daily, and Climate Change Explorer every 50 months. Most recently, CO₂ AR was updated on October 26, 2026 and Climate Change Explorer on October 27, 2026.

Other comparisons