Download the 399det app and take every game, every bonus, and every deposit option with you wherever you go. Built for Bangladesh players, optimised for low-data connections, and available on both Android and iOS right now.
Why Use the App
The 399det app is not just a smaller version of the website. It is a purpose-built mobile experience designed around how Bangladesh players actually use their phones.
The 399det app is optimised for mobile networks in Bangladesh, including 3G and 4G connections. Games load faster than the browser version, and the interface responds instantly to every tap.
Sign in to your 399det account using your fingerprint or face ID on supported devices. No more typing your password every time — just tap and you are in within one second.
Never miss a bonus, promotion, or limited-time offer again. The 399det app sends push notifications directly to your phone so you are always the first to know about new deals.
Top up your 399det balance directly from the app using bKash or Nagad. The deposit flow is fully integrated — no switching between apps, no copy-pasting numbers. Done in under a minute.
The 399det app uses a deep Burgundy Gold theme that is easy on the eyes during late-night sessions. The interface is designed for comfort whether you are playing in bright sunlight or a dark room.
Every session in the 399det app is protected by 256-bit SSL encryption. Your account details, payment information, and game history are fully secured at all times on both Android and iOS.
Platforms
Whether you are on a Samsung, Xiaomi, Oppo, or iPhone, the 399det app runs smoothly on virtually every modern smartphone used in Bangladesh.
Download the 399det APK directly from our website — no Play Store required. Enable "Install from unknown sources" in your Android settings, tap the APK file, and the app installs in seconds. Compatible with Android 6.0 and above.
| Minimum Android | 6.0 (Marshmallow) |
| File Size | ~12 MB |
| Install Method | Direct APK download |
| Auto-Update | In-app notification |
iPhone and iPad users can install the 399det app as a Progressive Web App (PWA) directly from Safari. Tap the Share button, select "Add to Home Screen", and the 399det app icon appears on your home screen just like a native app.
| Minimum iOS | iOS 13 and above |
| Install Method | Add to Home Screen (PWA) |
| File Size | No storage used |
| Auto-Update | Always latest version |
Installation Guide
Installing the 399det app on Android takes less than two minutes. Follow these four steps and you will be playing your favourite games in no time.
Visit 399det on your mobile browser. Register a free account or log in to your existing account to access the app download link.
Tap the Android download button. Your browser will download the 399det APK file — it is only about 12 MB so it downloads fast even on mobile data.
Go to Settings → Security → enable "Install from unknown sources" for your browser. This is a one-time step required for all APK installs on Android.
Tap the downloaded APK to install, then open the 399det app. Log in with your account and start playing Fishing Expert, Sports Events, and more instantly.
Full Game Library
Every game on the 399det platform is fully available in the app — no compromises, no missing titles. Here is what is waiting for you after you install.
Deep Dive
If you have been playing on 399det through your mobile browser, you already know the platform is solid. But the 399det app takes everything up a notch. It is built specifically for the way people in Bangladesh use their smartphones — quick sessions on mobile data, late-night gaming at home on Wi-Fi, and everything in between. Once you install the app, going back to the browser version feels like a step backwards.
The biggest thing most players notice first is the speed. The 399det app is optimised for Bangladeshi mobile networks, which means it loads games faster and uses less data than the browser version. If you are on a Grameenphone or Robi 4G connection, games like Fishing Expert and Demon Hunter load almost instantly. Even on a slower 3G connection, the app handles itself well — something the browser version cannot always match.
Data saving tip: The 399det app includes a built-in data saver mode. Enable it from the app settings to reduce data usage by up to 40% without affecting gameplay quality. Ideal for players on limited mobile data plans.
Security is another area where the 399det app stands out. Every connection between the app and the 399det servers is encrypted with 256-bit SSL — the same standard used by major banks. On top of that, the app supports biometric authentication on compatible Android and iOS devices. That means you can log in to your 399det account with your fingerprint or face ID, which is both faster and more secure than typing a password every time.
Deposits and withdrawals are fully integrated into the 399det app. You can top up your balance using bKash or Nagad without ever leaving the app. The deposit flow is built directly into the app interface — you enter the amount, confirm via your bKash or Nagad PIN, and the funds appear in your 399det account within seconds. Withdrawals work the same way, and most requests are processed within 15 minutes during normal hours.
Push notifications are one of the most useful features of the 399det app for Bangladesh players. The platform runs regular promotions — reload bonuses, cashback offers, seasonal events, and new game launches — and the app makes sure you never miss one. You can customise which notifications you receive from the app settings, so you only get alerts for the things that matter to you.
Bonus alert: 399det app users often receive exclusive mobile-only promotions that are not available on the desktop version. Make sure your push notifications are enabled so you catch these offers as soon as they go live.
Installing the 399det app on Android is straightforward. Because the app is distributed as a direct APK download rather than through the Google Play Store, you need to allow installation from unknown sources in your Android settings — this is a standard one-time step for any APK install and takes about ten seconds. Once that is done, the 399det APK installs just like any other app and you will find the icon on your home screen ready to go.
For iPhone users, the 399det app works as a Progressive Web App installed through Safari. Open the 399det website in Safari, tap the Share icon at the bottom of the screen, and select "Add to Home Screen". The 399det icon will appear on your iPhone home screen and the app opens in full-screen mode just like a native iOS app. Because it is a PWA, it always runs the latest version automatically — no manual updates needed.
The 399det app also includes the full responsible gaming toolkit available on the desktop platform. You can set deposit limits, session time reminders, and cooling-off periods directly from the app settings. These tools are there to help you stay in control and keep gaming enjoyable. If you ever need a break, the self-exclusion option is available in the app with just a few taps.
If you do not have a 399det account yet, you can register directly from the app. The registration process takes less than two minutes and every new member receives a 100% welcome bonus on their first deposit. Download the app, create your account, make your first deposit via bKash or Nagad, and your bonus is credited automatically. Head to the Register page to get started.
Remember: The 399det app is strictly for players aged 18 and above. Please play responsibly. Visit our Responsible Gaming page for tools and guidance.
Common Questions
More questions? Visit our full FAQ page or contact our 24/7 support team.