Best Co2 Apps & Games

248+ iOS apps & games curated and reviewed

3.1 avg rating
19 free apps & games
Updated November 2026

Looking for free co2 apps and games? 19 of our 248+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Compare top Co2 Apps & Games (November 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Standoff 2Standoff 2Free4.4★ (146K)YesYesNov 2026
2C02 MonitorC02 MonitorFree3.0★ (2)NoNoMay 2026
3CO2 ModellerCO2 ModellerFree2.5★ (2)NoNoMay 2026
4Altos: Air analyzer, CO2 CheckAltos: Air analyzer, CO2 CheckFree1.0★ (1)NoNoNov 2026
5Connected2.meConnected2.meFree4.4★ (31K)NoYesNov 2026
6CO2 sensorCO2 sensorFree3.4★ (7)NoNoOct 2026
7LogiCO2-ScoutLogiCO2-ScoutFree—NoNoMay 2026
8LogiCO2-SnifferLogiCO2-SnifferFree—NoNoMay 2026

Top Picks for Co2

Standoff 2#1

Standoff 2 by AXLEBOLT LTD

Multiplayer FPS Shooter Game
Editor's Choice
🎮 Games
4.4😊(146K ratings)
FreeAdsIn-App Purchases
#38in Games
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Engage in tactical, skill-based first-person shooter battles with friends. Explore detailed maps, customize weapons with skins, and choose from various game modes. Regular updates keep the action fresh with new content and seasonal events.

What We Love

  • 🚀 Smooth gameplay
  • 👍 Great graphics
  • 💎 Diverse skins and customization
  • 🕹️ Competitive gameplay
  • 🎮 Mobile CS:GO alternative

Room to Improve

  • 🐛 Bugs and glitches
  • 🤖 Matchmaking issues
  • 🔫 Weapon balance concerns
  • 🏆 Lack of progression/rewards
  • 🔌 Connectivity problems
2.5(2 ratings)
Free
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Simulate the impact of reducing carbon emissions on climate change. This app generates projections for atmospheric CO2 concentration, global warming, sea level rise, and ocean acidification.

More Co2 apps to explore

FAQ about Co2

What are the best co2 apps & games for iPhone?
Standoff 2 tops our co2 apps & games ranking as of November 2026, with a 4.4-star average from 146K App Store ratings, and it's free to download.
Yes — 19 of the top co2 apps & games we rank are free to download, including Standoff 2 and C02 Monitor.
Standoff 2 shows ads and offers in-app purchases, according to its App Store listing as of November 2026.
We track 248+ co2 apps & games on the iOS App Store as of November 2026, ranked by rating, recency, and analysis of real user reviews.

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