# Dark21 — Connect people > Secure, free messaging and calling app with end-to-end encryption and multimedia support. (iPhone/iPad app by MM BITINVEST OU.) - Source: https://appshunter.io/ios/app/dark21/id1551656671 (this page in markdown: same URL + `.md`) - Developer: [MM BITINVEST OU](https://appshunter.io/developer/1551656673) - Category: Social Networking, Entertainment - Price: Free - Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 17+ - Requires: iOS 11.0 · 63 MB - Languages: Arabic, English - Released: 2021-02-23 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/dark21/id1551656671/reviews.md ## What is Dark21? WHY USE DARK21: • NO FEES: Dark21 uses your phone's Internet connection (4G/3G/2G/EDGE or Wi-Fi, as available) to let you message and call friends and family, so you don't have to pay for every message or call.* There are no subscription fees to use Dark21. • SAY ANYTHING – End-to-end encryption (powered by Dark21 Protocol™) keeps your conversations secure. Privacy isn’t an optional mode — it’s just the way that Dark21 works. Every message, every call, every time. • GO FAST – Messages are delivered quickly and reliably, even on slow networks. Dark21 is optimized to operate in the most constrained environment possible. • MULTIMEDIA: Send and receive photos, videos, documents, and Voice Messages. • FEEL FREE – Dark21 is a completely independent. Development is supported by users like you. No advertisements. No trackers. No kidding. • FREE CALLS: Call your friends and family for free with Dark21 Calling, even if they're in another country.* Dark21 calls use your phone's Internet connection rather than your cellular plan's voice minutes. (Note: Data charges may apply. Contact your provider for details. Also, you can't access 911 and other emergency service numbers through Dark21). • POWERFUL: You can create group chats with up to 500 members and 25 admins, share large videos, documents of any type (.DOCX, .MP3, .ZIP, etc.). Dark21 is the perfect tool for hosting online communities and coordinating teamwork. • SAY NO TO USERNAMES AND PINS: Why bother having to remember yet another username or PIN? Dark21 works with your phone number, just like SMS, and integrates seamlessly with your phone's existing address book. • QUICKLY CONNECT WITH YOUR CONTACTS: Your address book is used to quickly and easily connect you with your contacts who have Dark21 so there's no need to add hard-to-remember usernames. • WHISPER IN THE SHADOWS – Switch to the dark theme if you refuse to see the light. • AND MUCH MORE: Share your location, exchange contacts, set custom wallpapers and notification sounds, broadcast messages to multiple contacts at once, and more! For support, questions, or more information, please visit: https://dark21.app/support ## Key features - End-to-end encryption - Free messaging and calls - Multimedia sharing - Large group chats - No usernames or pins - Dark theme option ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/dark21/id1551656671/reviews.md ### 1/5 — Fraud *2023-08-20* This app allows transmission of darkweb data and someone was trying to spoof my number using this app. TAKE THIS DOWN NOW!! ## Frequently asked questions about Dark21 ### Does Dark21 have ads? No, Dark21 is completely independent and does not feature advertisements. Its development is supported by users, ensuring a tracker-free and ad-free experience. ### Is Dark21 free to use? Yes, Dark21 has no subscription fees or charges for messaging and calls. It utilizes your phone's internet connection, similar to how other messaging apps operate. ### What is the age rating for Dark21? Dark21 has an age rating of 17+, indicating it is intended for mature audiences. ### How does Dark21 handle privacy? Dark21 offers end-to-end encryption for all messages and calls, ensuring that conversations are secure and private by default. This encryption is powered by the Dark21 Protocol™. ### Can I make international calls with Dark21? Yes, you can make free international calls with Dark21 Calling, provided both parties use the app and are connected to the internet. Data charges may apply, and emergency numbers like 911 cannot be accessed. ### What devices are supported by Dark21? Dark21 is supported on iPhone, iPad, and iPod devices. ### How often is Dark21 updated? Dark21 was last updated on February 24, 2021, with version 1.0. The initial release date was February 23, 2021. ### What are the limitations of Dark21 group chats? Group chats on Dark21 can include up to 500 members and 25 administrators. This makes it suitable for hosting online communities and coordinating teamwork. ## Version history (last 1 release) ### 1.0 — 2021-02-24 No release notes. ## More apps by MM BITINVEST OU - [Banca NEO](https://appshunter.io/ios/app/banca-neo/id1577734666) - [My NEO FX](https://appshunter.io/ios/app/my-neo-fx/id1618197270) All apps by MM BITINVEST OU: https://appshunter.io/developer/1551656673 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*