Best 21Dev Apps & Games

131+ iOS apps & games curated and reviewed

4.0 avg rating
20 free apps & games
Updated June 2026

Looking for free 21dev apps and games? 20 of our 131+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.

Top Picks for 21Dev

CFR AI - Title 21#1

CFR AI - Title 21 by SmerDev Studio LLC

Clinical Research Assistant
Editor's Choice
🏥 Medical
5.0(1 ratings)
FreeIn-App Purchases
CFR AI - Title 21 screenshot 1
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CFR AI - Title 21 screenshot 3
CFR AI - Title 21 screenshot 4
CFR AI - Title 21 screenshot 5
CFR AI - Title 21 screenshot 6

Navigate complex federal regulations with an AI-powered assistant. Get instant, accurate answers to your questions about Title 21 of the Code of Federal Regulations, covering drug development and clinical trials. Features include interactive chat, example questions, and new calendar and reminder functionalities.

O-KAM Pro#2

O-KAM Pro by Shenzhen VeePai IoT Intelligent Technology LLC

Strong Contender
🛠️ Developer Tools
4.6😊(8.3K ratings)
FreeAdsIn-App Purchases
#6in Developer Tools
O-KAM Pro screenshot 1
O-KAM Pro screenshot 2
O-KAM Pro screenshot 3
O-KAM Pro screenshot 4
O-KAM Pro screenshot 5

Monitor your home remotely with real-time video surveillance. Access cloud storage, receive alarm notifications, and communicate via two-way audio. Capture photos and videos for convenient home management.

What We Love

  • 🚀 Convenient
  • 🚀 Easy to use
  • 🚀 Great picture quality
  • 🚀 Excellent value

Room to Improve

  • 🐛 Connectivity issues
  • 🐛 Unreliable motion detection
  • 🔋 Battery life concerns
TopTop: Games & Party#3

TopTop: Games & Party by MX INNOVATION PTE. LTD.

Play Games & Hang Together
Worth Considering
🎮 Games
4.9(1.5K ratings)
FreeAdsIn-App Purchases
#6in Games
TopTop: Games & Party screenshot 1
TopTop: Games & Party screenshot 2
TopTop: Games & Party screenshot 3
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TopTop: Games & Party screenshot 5
TopTop: Games & Party screenshot 6

This app offers a variety of multiplayer games and social features for real-time interaction. Connect with friends or meet new people through engaging gameplay and voice chat rooms. Enjoy endless fun and build connections.

More 21Dev apps to explore

4
她说 | 认真交朋友
她说 | 认真交朋友
她说 | 认真交朋友
每天认识21位有趣好看的新朋友
Free

This social app helps users build genuine connections, find romantic partners, make friends, and expand their professional network. It features a strict user review process and daily personalized recommendations of 21 real users to facilitate meaningful matches.

Genuine connection buildingDating and finding partnersFriend making
🌐 Social Networking
(404)
free with in-app purchases
5
dev.to
dev.to
dev.to
Code Creators Coming Together
Free

Explore and engage with a blogging-forward social network focused on code creators. Discover content, follow tags and members, and stay updated on the evolving Forem ecosystem.

Navigate Forem ecosystemFollow dev.to tags and membersDiscover Forem ecosystem content
🌐 Social Networking
(32)
free
6
daily.dev
daily.dev
daily.dev
The feed for developers
Free

Get a personalized feed of developer news, articles, and discussions tailored to your interests. Discover new tools and insights across AI, React, DevOps, and more from thousands of sources.

Personalized developer feedAI-powered content curationCommunity discussions (Squads)
📡 News
(33)
free with in-app purchases
7
ViViWo play meet & share
ViViWo play meet & share
ViViWo play meet & share
Chat & talk with new people
Free

Explore a vibrant 3D city, connect with others through customizable avatars, and engage in a variety of activities. Attend events, play games, and interact with brands in a shared virtual space accessible from any device.

3D city explorationCustomizable avatarsVirtual apartment ownership
🌐 Social Networking
(61)
ad-supported
8
Assemblr Studio: Easy AR Maker
Assemblr Studio: Easy AR Maker
Assemblr Studio: Easy AR Maker
Easy Augmented Reality Maker
Free

Create immersive augmented reality experiences without any coding. Utilize a drag-and-drop editor with thousands of 3D objects, animations, and interactive elements. Share your AR projects easily across various platforms.

Drag-and-drop AR editorThousands of 2D & 3D objectsAdd animations and interactivity
🎨 Graphics & Design
(238)
free with in-app purchases
9
Plotify
Plotify
Plotify
by Changsha Xingyue Interactive Network Technology Co., Ltd
Free
🌟 Lifestyle
(13)
10
How Well Do You Know Me
How Well Do You Know Me
How Well Do You Know Me
Do You Know Me?
Free

Discover how well you know your partner or friends with this interactive quiz game. Answer a series of questions and then have your partner or friend try to match your responses to calculate your compatibility score. It's a fun way to test your understanding of each other's feelings.

Partner compatibility quizFriendship test gameAnswer matching questions
🎮 Games
(860)
free with in-app purchases
11
XMAKER
XMAKER
XMAKER
Gamification 3D Design App
Free

This app makes 3D printing accessible for home users with its one-press printing technology. It offers a user-friendly experience, allowing you to focus on the creative process of bringing your designs to life through 3D printing.

User-friendly 3D printingOne-press printing technologyHome 3D design
🔧 Utilities
(0)
free with in-app purchases
12
Infinite Cultivation
Infinite Cultivation
Infinite Cultivation
Xuanhuan idle cultivation game
Free

Embark on a journey of immortal cultivation in this idle social game. Alchemy, planting, and home building are just the beginning. Experience tribulations, ascend to new heights, and forge powerful artifacts. Join sects, learn skills, and discover hidden treasures.

Casual & Idle gameplayTribulation & Ascension systemTreasure hunting & Alchemy
🎮 Games
(1.5K)
free with in-app purchases
13
掼蛋-如意掼蛋单机欢乐版惯蛋
掼蛋-如意掼蛋单机欢乐版惯蛋
掼蛋-如意掼蛋单机欢乐版惯蛋
经典单机爱掼蛋游戏,天天趣味惯蛋王
Free

Experience authentic Jiangsu Huai'an card game gameplay. Develop unique partners with special abilities to assist you in challenging scenarios. Embark on a national journey, overcome obstacles, and enjoy exciting game variations for enhanced fun.

Authentic Jiangsu Huai'an gameplayPartner development with unique abilitiesStory mode with national travel
🎮 Games
(770)
free with in-app purchases
14
TrueID: #1 Smart Entertainment
TrueID: #1 Smart Entertainment
TrueID: #1 Smart Entertainment
Lifestyle & Entertainment
Free

Discover personalized content, including trending stories and exclusive dramas. Stream popular movies, series, and animations from Asia, with live TV options. Shop for lifestyle items and redeem exclusive rewards.

Personalized content feedsExclusive short dramasAsian series and movies
🎬 Entertainment
(1.6K)
free with in-app purchases
15
LetStudy Live Streaming Video
LetStudy Live Streaming Video
LetStudy Live Streaming Video
by Hai Pham
Free

Access thousands of video courses taught by expert instructors on a wide range of topics, from programming to personal development. Learn new skills, advance your career, or explore hobbies with lifetime access to course content and offline learning options.

Thousands of video coursesExpert instructorsLifetime access to content
🎬 Entertainment
(17)
free with in-app purchases
16
alistTools
alistTools
alistTools
Alist、OpenList、网盘管理、文件管理、视频播放器
Free
$9.99 | 100% OFF

This app acts as a media player powered by Alist, allowing users to manage and stream content from various cloud storage services. It offers seamless synchronization across Apple devices and robust file management capabilities. Enjoy a wide range of supported video, audio, and subtitle formats with advanced playback features.

Alist-driven media playbackSupport for multiple cloud drivesiCloud data synchronization
📊 Productivity
(63)
free with in-app purchases
17
2000 AD Featuring Judge Dredd
2000 AD Featuring Judge Dredd
2000 AD Featuring Judge Dredd
by Rebellion Publishing Limited Apps
Free

Explore vast comic universes featuring iconic characters like Judge Dredd and Rogue Trooper. Access over 1800 comic books and graphic novels with free peeks and offline reading. Subscribe for exclusive offers and DRM-free downloads.

Infinite comic universesIconic character libraryOver 1800 comic books
📚 Books
(5)
free with in-app purchases
18
Tru Count - Blackjack Trainer
Tru Count - Blackjack Trainer
Tru Count - Blackjack Trainer
by Phoenix AI Consulting LLC
Free

Master blackjack strategy with this professional training app. It offers interactive practice, strategy charts, and card counting tools for all skill levels. Track your progress and practice offline to perfect your game.

Interactive practice mode with instant feedbackComprehensive strategy chartsCard counting trainer (Hi-Lo system)
🎮 Games
(1)
freemium
19
ZingPlay Games: Shan, 13Poker
ZingPlay Games: Shan, 13Poker
ZingPlay Games: Shan, 13Poker
Game portal with diverse games
Free

This game portal offers a diverse range of popular card games and entertainment options, allowing users to play for free, connect with others, and sharpen their skills in a competitive environment. Download now to access daily free gifts, enjoy various games, and be part of a large community of players.

🎮 Games
(18)
20
4D King Live 4D Results
4D King Live 4D Results
4D King Live 4D Results
by Nick Goh
Free

Get live updates for 4D and Jackpot lottery results across Malaysia, Singapore, and Southeast Asia. This app offers real-time notifications, past draw history, and support for multiple languages and devices.

Live 4D & Jackpot resultsReal-time updatesPast draw history
🌟 Lifestyle
(318)
ad-supported