Download: O-lab offline learning app 1.9.4 APK

Compatible with Android 6.0+

Developer: O-lab

Download APKs (26.9 MB)

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Android Certificate

Package:  com.expertsoft.o_labs

File MD5:  e30f5cb55f94bec97810f10ba4be0dcf

Certificate MD5:  f132bc1479d8ae7636d7a46e94f3cec9

Certificate:  Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            80:d2:b3:ba:b9:62:b6:5b:60:46:cc:e8:ab:22:1c:bc:bb:7b:07:50
    Signature Algorithm: sha256WithRSAEncryption
        Issuer: C=US, ST=California, L=Mountain View, O=Google Inc., OU=Android, CN=Android
        Validity
            Not Before: Jun 23 23:23:26 2020 GMT
            Not After : Jun 23 23:23:26 2050 GMT
        Subject: C=US, ST=California, L=Mountain View, O=Google Inc., OU=Android, CN=Android
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (4096 bit)
                Modulus:
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                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Basic Constraints: 
                CA:TRUE
    Signature Algorithm: sha256WithRSAEncryption
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📱 How to Turn Off Google Play Protect & Enable APK Installation

Important: Disabling Play Protect turns off automatic security scanning. Do this only temporarily and only if you trust the app source.

🍀 Method 1: Turn it off through the Google Play Store

Step 1: Open the Google Play Store app on your Android phone.
Step 2: Tap your profile picture or initial in the top right corner.
Step 3: Select “Play Protect” (it has a shield icon).
Step 4: Tap the gear icon ⚙️ in the top right corner (Settings).
Step 5: You'll see two switches:

Scan apps with Play Protect
Improve harmful app detection

Step 6: 👉 Turn both switches off (slide them to the left).
When asked for confirmation:
“Turn off Play Protect scanning?” → Tap Turn off.

🍀 Method 2: Turn it off from your phone’s Settings app (some phones)

Step 1: Open your phone’s Settings.
Step 2: Scroll down and select Google → then Security.
Step 3: Tap Google Play Protect.
Step 4: Turn off “Scan apps with Play Protect.”

Tip: To turn it back on later, go to Play Store → profile icon → Play Protect → ⚙️ and switch the options back ON.

🍀 Method 3: Allow installation of APK files (outside Google Play)

Step 1: Open your phone’s Settings.
Step 2: Tap Security (or Privacy & Security on newer Android versions).
Step 3: Tap Install unknown apps (or Install unknown sources).
Step 4: Choose the app you’ll use to open/download the APK (e.g., Chrome, Files).
Step 5: Switch on “Allow from this source.”
Step 6: You can now install APK files from that app.

Safety reminder: After installing, turn Play Protect back on and consider disabling “Allow from this source” again.

Data safety

Here's more information the developer has provided about the kinds of data this app may collect and share, and security practices the app may follow. Data practices may vary based on your app version, use, region, and age.

No data shared with third parties

The developer says this app doesn't share user data with other companies or organizations. Learn more about how developers declare sharing.

Data collected

Data this app may collect

Photos and videos

Photos · OptionalApp functionalityVideos · OptionalApp functionality

Files and docs

Files and docs · OptionalApp functionality

Audio

Voice or sound recordingsApp functionalityMusic files · OptionalApp functionality

Personal info

NameApp functionality, Analytics, Account managementEmail addressApp functionality, Analytics, Account managementPhone number · OptionalApp functionality, Analytics, Account managementSexual orientation · OptionalApp functionality, Analytics, Account management