Mobile Application

Ok big App — On Android & iOS Bangladesh's Best Betting Experience

Your full casino and betting world, right in your pocket. With the ok big app, bet on live matches from anywhere, make instant payments, and enjoy the whole experience in Bangla.

4.8
★★★★★
Rating
1M+
Download
32MB
App Size
v3.1
Latest
ok big 9:41 ▲ 📶 🔋
ok big 🔔 💰
My Balance
৳4,850
Last Deposit: Today at 9:15 AM
Deposit
Withdraw
Cricket
Casino
Live Match
BPL · T20
Dhaka 11.3 Overs Chattogram
71/2
Dhaka
1.75
Chattogram
2.10
160+
1.90
Premier League
Arsenal 68' Chelsea
1 – 1
Arsenal
2.2
Draw
3.1
Chelsea
2.9

Download by Platform

Install the ok big app the right way for your device

Android APK

Version 3.1.4 · Android 5.0+
File Size32 MB
Minimum AndroidAndroid 5.0 (Lollipop)
UpdateJune 2026
LanguageBengali, English

To install the APK, enable "Unknown sources" or "Install unknown apps" in your phone's settings.

1

Tap the button below to download the APK file

2

Open the downloaded APK from your file manager

3

Tap Install and open the app once it's done.

4

Log in to your existing account or register a new one

Download Android APK

IOS App

Version 3.1.2 · iOS 13.0+
File Size38 MB
Minimum iOSiOS 13.0
UpdateJune 2026
LanguageBengali, English

To download on iOS, use our direct link or TestFlight. An App Store version is coming soon.

1

Open the ok big iOS link in Safari

2

Tap "Add to Home Screen" or the "Install" button

3

Go to Settings → General → VPN & Device Management to trust the app

4

Tap the ok big app icon on your home screen to get started

iOS App Download
PWA — Use It Right from Your Browser

You don't need to download the app to use ok big. Visit the site in Chrome or Safari and tap "Add to Home Screen" for an app-like experience.

Open Web Version

ok big

Key Features of the ok big App

Everything the website offers — faster and easier

Live Betting

Bet at real-time odds while the match is in progress. Odds update faster in the app than anywhere else.

Push Notifications

Match kick-off, odds changes, withdrawal confirmed — get every update instantly.

Biometric Login

Log in instantly with your fingerprint or Face ID — no password needed.

Offline Mode

You can still view past match history and your balance even without an internet connection.

Fully in Bengali

The entire ok big app interface is in Bangla. No language barriers.

One-Tap Payment

Save your Mobile Pay or Nagad number once, and every future deposit is just one tap away.

Dark Mode

Dark theme for easy viewing — enabled by default.

Live Score

Follow live scores for your active bets right inside the app — no need to open another site.


What's Inside the App?

A quick look at every section of the ok big app

Home Screen Live Matches & Quick Access
Cricket Betting Live Odds & In-Play
Live Casino Live Dealer Games
Payment Mobile Pay, Nagad, Rocket
VIP Levels & Rewards
Profile Settings & Security

System Requirements

Subject Android IOS
Minimum OSAndroid 5.0+IOS 13.0+
RAM2 GB+2 GB+
Storage50 MB+60 MB+
Internet3G/4G/WiFi3G/4G/WiFi
File Size32 MB38 MB
BiometricFingerprintFace ID / Touch ID
LanguageBengali, EnglishBengali, English
ok big
4.8
★★★★★
100K+ Reviews
5 ★
82%
4 ★
11%
3 ★
4%
2 ★
2%
1 ★
1%

Ok big App — Mobile Betting the Way It Should Be

Mobile internet usage in Bangladesh keeps growing, and most people now spend far more time on their phones than on a computer. ok big built its mobile app with exactly this in mind — bringing everything the platform offers into a clean, well-organised experience on a small screen.

Most betting sites' mobile versions are just shrunken desktops — tiny buttons, oversized tables, and sluggish loading. The ok big app was built from the ground up for mobile. Everything from live cricket scorecards to the betslip is laid out for effortless one-handed use.

Don't be put off by APK installs

Many people feel hesitant about installing an APK outside of the Google Play Store — that's completely understandable. However, ok big's APK is downloaded directly from their official servers, so there's no security risk. Every update goes through a fresh verification of the file.

Before installing, go to your phone's settings and enable "Unknown sources" or "Install from unknown apps". This only needs to be on during installation — you can turn it off afterwards. Once the ok big app is installed, it runs like any other app on your phone.

Notifications — The Right Info at the Right Time

The ok big app has a smart push notification system. You'll get updates on scores for matches you've bet on, withdrawal confirmations, and new promotions — all in real time. You can also choose to turn off specific types of notifications whenever you like.

Ok big app notifications are especially handy on big match days. Getting odds-change alerts before a match starts gives you the best chance to place your bet at the right moment.

Regular Updates & Bug Fixes

Ok big releases at least one app update every month, bringing new features along with performance improvements. There's an "Check for Updates" option right inside the app, so you can download the latest version anytime.

ok big

What Our Users Are Saying

What ok big app users are saying

★★★★★

"Deposited via Mobile Pay and got my balance within just 1 minute. The app runs so smoothly — it doesn't even feel like a Bangladeshi betting app."

Kamal Uddin
Android · Dhaka
★★★★★

"Placing bets during a live cricket match is so easy on this app. The odds update so fast — you just can't get that on a browser."

Sabrina Khatun
iOS · Chattogram
★★★★☆

"The fingerprint login is a game-changer. Typing my password every time was such a hassle — now I'm in with a single touch."

Mizanur Rahman
Android · Rajshahi
★★★★★

"Everything on ok big is in Bangla — that's the biggest thing for me. You can use it easily even if you don't know English."

Roksana Begum
Android · Sylhet
ok big

Frequently Asked Questions

Straight answers to common questions about using the app

Deposits made through Mobile Pay or Nagad on the ok big app typically reflect within 1–3 minutes. If more than 5 minutes have passed and your balance hasn't updated, close the app and reopen it. If the issue persists, note the transaction ID from your Mobile Pay or Nagad account and reach out to ok big's live chat support. Providing the transaction ID usually resolves the issue within 10–15 minutes. There may be minor network delays at night, but your money is never lost — all transactions are logged.

Placing an accumulator or parlay bet on the ok big app is straightforward. Tap the odds button on any match to add it to your betslip, then head to another match and tap a second odds button — it'll be added automatically and shown as a parlay. You can stack up to 10 events this way. The betslip will display your combined accumulator odds and potential payout. To remove a selection, tap the ✕ next to it. Keep in mind — every event in a parlay must win; one loss and the entire bet is lost.

Download the ok big App Now

Free on both Android and iOS. Download, register, and claim your 100% welcome bonus.

Safe Download · Virus-Free · Official Version

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