Smart.Grid vs Race To Zero
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Smart.Grid
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With Germany and other countries having committed to a process of energy transformation, the amount of renewable generators with fluctuating output is on the increase. In order to make efficient use of this energy originating from sun and wind, novel methods of power system operation are to be conceived. This emerging set of novel methods defines the functionality of the smart grid. Learn about the key players of the smart grid with this app. Play five level, each one introducing one key player with a quiz and a small game. The games transform your iPhone into: 1. A PV-cell 2. A wind energy converter 3. A flexible consumer 4. An ice storage 5. An energy management system Gain an insight into the functionality of a smart grid and learn how the smart grid contributes to a secure and sustainable energy supply.
Race To Zero
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Race To Zero is a fun packed app with a serious message - a great tool for learning about spending, investing, innovating and production. Simply tap and swipe your choices to see if you can make the best decisions to achieving a carbon neutral town. Within the game you will learn about the choices in economics and also the technologies of energy production, saving and storage. You start with oil powered energy production and a generally happy population. However, the townspeople would like to see change and that's where you come in! Exciting App Features - Plan your Spending Buy, Invest, Research and Sell to get the optimum outcome to your Race to Zero Carbon. - Augmented Reality STEM Puzzles Games against the clock appear in your World - can you fix a circuit board? make the optimal wind farm? fix the water generator? - 3D Town in AR Watch your animated town advance as you evolve the energy use. - Choose your name and see your team Select a fun name from the drop down lists and see which of the 4 Scottish themed teams you are assigned to. - Hundreds of Chance events Sometimes good, sometimes bad - the road to success is never predictable. - 30 minute gameplay Manage a budget over 4 decades in just 30 minutes - can you beat the politicians to Carbon Zero? - Group Play Share your special code in the classroom or at home to include friends and colleagues in a group game. - Review your Stats After every game, see your activity in graphs and review your choices - can you beat it next time? This app is a free, family safe digital product and there is: - No In-app Purchasing; - No Advertising; - No Registration; - No Personal Data Recorded. The aim of the product is to provide supplementary learning on economics and increase environmental awareness in a fun, engaging way. This product was developed by the Award winning Mardles team at Harmony Studios and funded by Fife Council, Scotland and Interreg North Sea Region.
Screenshots
Verdict
The clearest difference is update cadence: Smart.Grid at every 3 months against Race To Zero's every 13 months. Smart.Grid also leads on iOS requirement (9.0 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Smart.Grid ships an update every 3 months, Race To Zero every 13 months. The most recent releases landed on October 5, 2026 and October 3, 2026 respectively.
| Parameter | Smart.Grid | Race To Zero |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 7 MB | 262 MB |
| Age rating | 4+ | 4+ |
| Developer | Technische Universitaet Berlin | Harmony Studios Limited |
In-app purchases
Smart.Grid
No in-app purchases
Race To Zero
No in-app purchases









