At home or on the go — wherever you are, the 399days app delivers a seamless gaming experience. Slots, Live Casino, bingo, and betting, all in one app.
Mobile is inseparable from everyday life these days, and 399days built their dedicated mobile app with exactly that in mind. This isn't just a browser shortcut — it's a fully native app experience. The moment you open it for the first time, the smoothness of the design is immediately apparent.
The app's home screen shows you popular games, ongoing tournaments, and your personal wallet balance at a glance. No more logging in through a browser every time — sign in once and the app remembers you. You can also use biometric login to get in with your fingerprint or Face ID.
Push notifications are one of the biggest advantages of the 399days app. You'll get instant alerts when a new bonus drops, a tournament kicks off, or your deposit is processed — so you never miss an offer. Head into the app settings to customize exactly which notifications you want and which ones you'd rather skip.
The 399days app is also easy on mobile data. Enabling low-data mode significantly reduces internet usage while you play. Graphics adjust automatically, but gameplay stays just as smooth. You can enjoy a decent experience from anywhere in the country, even on a relatively weak network.
Average rating based on 10,000+ reviews.
Downloaded from Bangladesh and neighboring countries.
New Live Casino interface with faster loading.
Every feature is designed with the everyday needs of Bangladeshi users in mind.
Tapping any game loads it in just 1-2 seconds. CDN technology keeps latency extremely low, so you never see a loading screen mid-game.
Bonuses, tournaments, deposit confirmations — all updates delivered straight to your phone. You can customize notification categories to suit your preferences.
No more typing passwords. Log into your account in seconds using your fingerprint or Face ID.
Deposits and withdrawals can be made directly within the app. Both mobile banking and bank transfer methods are supported.
Dark mode is on by default for a more comfortable viewing experience when playing at night. You can also change the theme color to whatever you prefer.
24/7 Bengali-speaking customer service is available right inside the app. No need to leave the app when you need help.
You can play 399days on both, but app users get a few extra perks.
| Features | App | Mobile Browser |
|---|---|---|
| Loading Speed | Very fast (~1 second) | Moderate (~3-4 seconds) |
| Push Notifications | Available | None |
| Biometric Login | Available | None |
| Low-Data Mode | Available | Limited |
| Offline Lobby Browsing | Available | None |
| Battery Usage | Low (Optimized) | Higher |
| Exclusive App Bonuses | Available | None |
| Installation Required | Yes | No (direct use) |
The 399days app gives you the full game library, identical to the website — nothing left out. From slots and live dealer tables to bingo rooms and Sports Betting, it's all in one app.
The "My Favorite Games" feature in the app is particularly handy. Save the games you play most often to your favorites, and they'll appear front and center every time you open the app — no searching needed. The app also keeps a history of your recently played games.
Security is paramount in any online gaming app. The 399days app uses 256-bit SSL encryption — the same standard used by banking systems — keeping your personal information and transaction data protected at all times.
The app supports Two-Factor Authentication. By verifying an SMS or email code at login, you can ensure no one gains unauthorized access to your account.
Downloading the 399days app unlocks bonuses available exclusively to app users. Your first deposit through the app comes with an extra welcome bonus, and every week you can look forward to app-exclusive free spins and cashback offers.
In the loyalty points system, app users earn slightly more points on every game. These points can be redeemed for game bonuses, free bets, or cash rewards. Regular players also get monthly VIP offers.
Opening the app every day earns you a daily login bonus. Log in 7 days in a row and you unlock a special weekly reward. These small perks add up to a significant difference over time.
App users get tournament notifications before anyone else. Push notifications go out the moment registration opens for major tournaments, so you never miss a big event.