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Best O2Co2 Apps & Games

236+ iOS apps & games curated and reviewed

4.2 avg rating
19 free apps & games
Updated June 2026

Out of 236+ o2co2 apps on iOS, 19 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for O2Co2

O2Cam: Take photos that breath#1

O2Cam: Take photos that breath by Xiamen HongTianChuangShi Technology Co., Ltd.

Take exquisite, natural-lookin
Editor's Choice
📷 Photo & Video
4.8😊(2.5K ratings)
Free
O2Cam: Take photos that breath screenshot 1
O2Cam: Take photos that breath screenshot 2
O2Cam: Take photos that breath screenshot 3
O2Cam: Take photos that breath screenshot 4
O2Cam: Take photos that breath screenshot 5

Enhance your natural beauty with this photo editing app. It offers sophisticated filters, makeup looks, and subtle facial adjustments to create flawless, elegant portraits. Smart AI automatically refines your images based on environmental factors.

What We Love

  • 😊 Best camera app
  • 👍 Natural-looking filters and makeup
  • 💡 Adjustable features like portrait mode
  • 🚀 Efficient and smooth performance

Room to Improve

  • 🐛 Occasional crashes and image upload issues
  • 💰 Watermark on free version
  • 🔒 Lack of privacy/security features
Blaze of Battle#2

Blaze of Battle by Shenzhen Leyi Network Co., Ltd.

Lead your dragon to victory!
Strong Contender
🎮 Games
4.1😐(3.7K ratings)
FreeAdsIn-App Purchases
#99in Games
Blaze of Battle screenshot 1
Blaze of Battle screenshot 2
Blaze of Battle screenshot 3
Blaze of Battle screenshot 4
Blaze of Battle screenshot 5

Build a city, raise an army, and command dragons and knights in this online strategy game. Battle millions of players worldwide, join alliances, and strategize with friends in real-time chat. Research upgrades and forge equipment to lead your forces to victory.

What We Love

  • 🚀 Addictive and fun
  • 👍 Great strategy game
  • 🤖 Unique concept with dragons
  • 🤝 Friendly community

Room to Improve

  • 💰 Pay-to-win model
  • 🕰️ Slow progression without spending
  • 🔒 Lack of security/protection for smaller players
ASTRA: Knights of Veda#3

ASTRA: Knights of Veda by DRIMAGE Co., Ltd

Season 2 Tears of the Goddess
Worth Considering
🎮 Games
4.6😐(1.5K ratings)
FreeAdsIn-App Purchases
ASTRA: Knights of Veda screenshot 1
ASTRA: Knights of Veda screenshot 2
ASTRA: Knights of Veda screenshot 3
ASTRA: Knights of Veda screenshot 4
ASTRA: Knights of Veda screenshot 5
ASTRA: Knights of Veda screenshot 6

Engage in thrilling side-scrolling action combat with unique Knights and their abilities. Explore a visually stunning dark fantasy world with a deep narrative. Participate in various game modes and earn rewards.

What We Love

  • 🚀 Phenomenal gameplay
  • 👍 Immersive story and atmosphere
  • 🎨 Gorgeous art style
  • 🔊 Exceptional voice acting

Room to Improve

  • 🐛 Frequent crashes and bugs
  • 🔍 Confusing UI and navigation
  • 🔋 Performance issues on older devices

More O2Co2 apps to explore

4
Them Bombs – co-op board game
Them Bombs – co-op board game
Them Bombs – co-op board game
Cooperative game for 2-4
Free

A cooperative game where one player must defuse a ticking bomb using only verbal instructions from their teammates who have access to the defusal manual. Test your communication and teamwork under intense time pressure.

Cooperative gameplay for 2-4 playersVerbal communication-based challengesTimed bomb defusal scenarios
🎮 Games
(2.6K)
free with in-app purchases
5
Solitaire Ⓞ
Solitaire Ⓞ
Solitaire Ⓞ
Classic Klondike Card Game
Free

Experience the classic Klondike Solitaire card game with beautiful graphics and intuitive controls. Enjoy unlimited undo and hints, timed modes, and customizable card styles. Relive nostalgic gameplay with modern design.

Klondike gameplayBeautiful graphicsUnlimited free undo
🎮 Games
(434K)
free with in-app purchases
6
Connected2.me
Connected2.me
Connected2.me
Chat, Find & Meet New People
Free

Connect with new people through free messaging and discover or share stories. Create a profile, get a unique link to share on social media, and let others connect with you for a fresh social networking experience.

Free messagingShare and discover storiesCustomizable profile
🌐 Social Networking
(31K)
free with in-app purchases
7
Secret of Mana
Secret of Mana
Secret of Mana
by SQUARE ENIX Co., Ltd.
$6.99

Embark on an epic adventure in a world powered by mystical forces. Battle an empire, befriend nature spirits, and experience seamless real-time combat with an innovative menu system. This classic action RPG offers engaging gameplay for all skill levels.

Real-time battle systemRing Command menuEpic story and world exploration
🎮 Games
(296)
paid
8
Nintendo Switch Parental Cont…
Nintendo Switch Parental Cont…
Nintendo Switch Parental Cont…
Supervise Your Child's Play
Free

Easily monitor your child's Nintendo Switch usage. Set daily play-time limits, manage communication settings, and view gameplay activity. Restrict access to games based on age.

Set daily play-time limitsManage GameChat settingsView play activity and monthly overview
🌟 Lifestyle
(163K)
free
9
Age of Origins:Tower Defense
Age of Origins:Tower Defense
Age of Origins:Tower Defense
zombie tower defense game
Free

Lead humanity's fight for survival in a zombie-infested world. Build armies, form alliances, and reclaim civilization block by block. Strategize on a real 3D map to crush rivals and lead the new age.

Build massive armiesRecruit unique heroesFight mutant zombies
🎮 Games
(62K)
free with in-app purchases
10
CO2 Check
CO2 Check
CO2 Check
Be Aware Of Your Air
Free

Monitor carbon dioxide levels remotely from your devices. Receive real-time readings and push notifications for unhealthy air quality. Optimize ventilation and know when to open windows for better air.

Remote CO2 monitoringReal-time readingsPush notifications for unhealthy levels
🌟 Lifestyle
(15)
free
11
Legacy of Lithas
Legacy of Lithas
Legacy of Lithas
An RPG with merging bloodlines
Free

Forge your destiny in a fractured realm where ancient powers awaken. Assemble a company of over 200 unique heroes, blending 80 distinct bloodlines to create powerful cross-breed warriors. Engage in tactical turn-based combat, conquer epic boss raids, and build your strategic base in a rich open-world RPG experience.

Hybrid bloodline breeding200+ cross-breed heroesEpic mythic boss raids
🎮 Games
(30K)
free with in-app purchases
12
League of Legends: Wild Rift
League of Legends: Wild Rift
League of Legends: Wild Rift
Competitive 5v5 MOBA Action
Free

Engage in fast-paced 5v5 multiplayer battles with strategic gameplay and a vast roster of champions. Team up with friends, outsmart opponents, and climb the leaderboards in this action-packed online arena.

5v5 multiplayer battlesStrategic gameplayDiverse champion roster
🎮 Games
(63K)
free with in-app purchases
13
Educational games kids 2-3-4-5
Educational games kids 2-3-4-5
Educational games kids 2-3-4-5
Montessori preschool, pre-k
Free

This app offers 15 engaging learning games designed for toddlers and preschoolers. It focuses on developing sorting, matching, and classification skills through interactive boards that teach concepts like shape, color, size, and profession. Developed with child psychologists, it enhances hand-eye coordination and visual perception.

15 learning gamesSort, match, and classifyDevelops hand-eye coordination
🎮 Games
(48K)
free with in-app purchases
14
O2GFlash
O2GFlash
O2GFlash
A flash drive tool
Free
📊 Productivity
(0)
15
Heart Rate Monitor: Pulse
Heart Rate Monitor: Pulse
Heart Rate Monitor: Pulse
Blood Pressure & ECG Watch, O2
Free

Track your heart rate and blood pressure using your iPhone camera. Log your health data, view pulse waveforms, and calculate BMI. Access heart-healthy recipes and relaxing music.

Heart rate measurement via iPhone cameraApple Watch synchronizationBlood pressure and oxygen saturation logging
💪 Health & Fitness
(6.7K)
free with in-app purchases
16
Art Of War 3:RTS Strategy Game
Art Of War 3:RTS Strategy Game
Art Of War 3:RTS Strategy Game
PvP, coop real-time battles
Free

Engage in classic real-time strategy battles with direct unit control. Command modern warfare forces, develop tactics, and conquer opponents in global PvP and cooperative conflicts. Choose your faction and lead your army to victory.

Real-time PvP and cooperative battlesDirect unit controlModern warfare units (infantry, vehicles, air, navy)
🎮 Games
(9.4K)
free with in-app purchases
17
Rock 92.3
Rock 92.3
Rock 92.3
Home of the 2GNC Show
Free

Stream your favorite classic rock station and listen to the 2 Guys Named Chris Show live. Access exclusive content and features from anywhere, anytime. This official app provides instant access to the station's programming.

Live radio streamingExclusive content2 Guys Named Chris Show
🎵 Music
(27)
free with in-app purchases
18
HTeaO
HTeaO
HTeaO
Order Ahead. Scan. Rewards.
Free

Easily order your favorite drinks for pickup or delivery. Earn points with every purchase by scanning your QR code or using your account details. Redeem your accumulated points for exclusive rewards and save your favorite locations and orders for quick reordering.

Order ahead for pickup or deliveryEarn points with every purchaseRedeem points for rewards
🍔 Food & Drink
(40K)
free
19
Legend of Slime: Idle RPG
Legend of Slime: Idle RPG
Legend of Slime: Idle RPG
Schleim Abenteuer Rollenspiele
Free

Command adorable Slimes in an epic idle RPG adventure. Collect loot, evolve heroes, and conquer stages through auto-battles, even offline. Rally your clan to defend your homeland in endless battles for rewards and glory.

Idle auto-battle gameplayAFK rewardsHero and Slime collection
🎮 Games
(41K)
free with in-app purchases
20
Summer of Memories Ver2
Summer of Memories Ver2
Summer of Memories Ver2
Mystery of the Time Capsule
Free

Experience a nostalgic narrative game set in rural Japan during the late Showa era. Guide a young boy's summer adventures by selecting items for his backpack, and listen to his tales of friendship, family, and discovery. This casual game offers a heartwarming journey through bittersweet memories.

Narrative-driven gameplayItem selection for explorationStorytelling of adventures
🎮 Games
(549)
free with in-app purchases