• Education & Careers
  • October 20, 2025

How to Put Password on Apps: Complete iOS & Android Guide

Okay, let's talk about locking down your apps. You know that sinking feeling when someone hands back your phone after "just checking the time"? Yeah, me too. That's why learning how to put password on apps isn't just techy stuff – it's peace of mind. Maybe you've got banking apps, private chats, or photos you'd rather keep... well, yours. I'll walk you through every step, whether you're Team iPhone or Team Android. No jargon, just clear steps.

Stop Prying Eyes: Why Locking Apps Matters

Think about what's on your phone right now. Your email? Banking apps? Dating profiles? Exactly. We hand our phones to friends, kids, coworkers without thinking twice. Locking individual apps solves that. It's different from locking your whole phone because:

  • Selective privacy: Lock only what needs protection (like your Venmo or Instagram DMs)
  • Extra layer: If someone guesses your main passcode, they still hit a wall
  • Childproofing: Keep kids out of your work apps or shopping accounts

Funny story: My cousin borrowed my phone to take a group photo last month. Later I found him scrolling through my texts with my boss. Awkward? You bet. That's when I finally learned how to password-protect my messaging apps.

iOS Guide: Locking Apps on iPhone and iPad

iPhone users, Apple doesn't give us a direct "lock this app" button. But we've got two solid workarounds.

Using Screen Time (Apple's Built-in Tool)

This method uses Apple's parental controls feature. Sounds weird for locking apps, but it works:

  1. Open Settings > Screen Time. If it's your first time, tap "Turn On Screen Time"
  2. Tap "Use Screen Time Passcode" and set a 4-digit code (NOT your device passcode!)
  3. Scroll to "Content & Privacy Restrictions" and toggle it ON
  4. Tap "Allowed Apps" – turn OFF every app you want to lock

Now when someone tries to open a blocked app, they'll see this:

What They See What You See
"Time Limit" screen asking for Screen Time passcode Enter YOUR passcode to open the app instantly

Annoying things about this method: First, that "Time Limit" message confuses people. Second, if you forget your Screen Time passcode? Painful reset process. But hey, it's free and built-in.

Third-Party App Lockers for iOS

Good news: Some clever developers made app lockers that actually hide apps behind Face ID or Touch ID. My top picks:

App Name Price Key Features My Rating
AppLocker Free (with ads) Face ID/Touch ID lock, hides photos/videos too ★★★★☆ (Ads get annoying)
Secure Folder $2.99/month Encrypted storage, browser lock, break-in alerts ★★★★★ (Pricey but slick)
Lockdown Pro Free trial, $9.99/year Fake crash screens, GPS-based auto-lock ★★★☆☆ (Overkill for most)

How they work: After installing, you'll:

  • Set a master password or biometric lock
  • Select which apps to protect
  • Optionally enable "stealth mode" (hides the locker app)

Android users, don't disappear on me – I'm getting to you next. But first, wanna know my personal iOS pick? I use AppLocker for basic stuff. It's not perfect, but it gets the job done without emptying my wallet.

Android App Locking: Brand-By-Brand Guide

Oh Android, you beautiful fragmented mess. Locking apps depends HUGELY on your phone brand. Here's the breakdown:

Brand Built-in Feature Name How to Find It
Samsung Secure Folder Settings > Biometrics and security > Secure Folder
OnePlus App Locker Settings > Utilities > App Locker
Xiaomi Second Space/App Lock Settings > Apps > App Lock
Google Pixel None (surprise!) Requires third-party apps

Using Samsung Secure Folder (Best Built-in Option)

This is actually brilliant. Secure Folder creates a password-protected zone inside your phone:

  1. Enable Secure Folder in Settings
  2. Set up PIN, pattern, or biometric lock
  3. Tap "Add apps" and select apps to move inside
  4. Original apps disappear – access everything via Secure Folder

Why I like it: Bank-level encryption, separate app instances (two WhatsApp accounts!), and it hides itself. Downside? Some apps complain about running in secure environments.

Third-Party Android App Lockers

No built-in option? These work on most Android devices:

App Name Best For Unique Feature Watch Out For
Norton App Lock Security newbies Simple interface, trusted brand Occasional battery drain
AppLock by DoMobile Customization freaks Fake covers, intruder selfies Aggressive ads in free version
Smart AppLock Minimalists Tiny size, fingerprint support Less frequent updates

Pro tip: Avoid any "app lock" tool requesting accessibility permissions – they can see everything you type. Stick with reputable names.

Heads-up: On some Chinese-brand phones (Xiaomi, Oppo), built-in app lock features PREVENT third-party lockers from working. Check your settings first before installing anything extra.

Password Lock vs. Biometric Lock: Which Wins?

Face ID or fingerprint seem cooler than typing passwords, right? Let's compare:

Lock Type Pros Cons Best For
Password/PIN Works on all devices, no hardware needed Slower to enter, easier to spy on Budget phones, shared devices
Fingerprint Lightning fast, hard to replicate Fails with wet/sweaty hands Personal phones, quick access
Face Recognition Most convenient (if it works) Struggles in low light, masks, twins Well-lit environments, newer phones

My take: Use biometrics for convenience but ALWAYS set a backup password. Why? Saw a guy locked out of his banking app for days after cracking his screen. Fingerprint sensor died, no password set. Disaster.

Beyond Passwords: Advanced Protection Tricks

Want to level up? Combine app passwords with these:

  • Stealth modes: Apps like AppLock can hide their icon or show fake errors
  • Intruder detection: Snap a photo after failed unlock attempts (creepy but effective)
  • Time-based locking: Auto-lock work apps after 6 PM
  • Location triggers: Disable app locks at home (using WiFi/GPS)

Remember: Balance security with sanity. Setting 27 layers of protection means YOU'LL forget how to access your own photos.

FAQ: Your App Lock Questions Answered

Do banking apps need extra locking?

Usually no – they already have login security. But locking adds a barrier if someone has your unlocked phone. For banking apps specifically, I focus on strong unique passwords instead.

Can locked apps still get notifications?

This drives people nuts. On iOS, locked apps via Screen Time still show notifications unless muted. Third-party lockers often block notifications. Android behavior varies – test yours!

Will app locking drain my battery?

Minimal impact for most tools. But avoid sketchy "RAM booster" apps pretending to be lockers. Norton and DoMobile's AppLock are battery-friendly in my testing.

What if I forget my app lock password?

Built-in systems (like Samsung Secure Folder) require factory reset – OUCH. Third-party apps usually have email recovery options. WRITE DOWN your master password somewhere safe!

Does locking apps slow them down?

On modern phones? Barely noticeable. On older devices with under 3GB RAM? Maybe a half-second delay. Not a dealbreaker for privacy.

My Golden Rules for Locking Apps

After testing 20+ methods across 8 devices, here's what sticks:

  • Prioritize high-risk apps: Banking > messaging > social media > games
  • Biometric + backup password: Always have a fallback
  • Test before relying: Lock a non-critical app first (like calculator)
  • Update regularly: App lockers need updates to work with new OS versions

Honestly? The biggest mistake isn't skipping app locks – it's locking EVERYTHING and getting locked out yourself. Start with 2-3 critical apps. See how it feels. Privacy shouldn't feel like a prison.

Still wondering exactly how to put password on apps for YOUR specific phone? Drop your model in the comments – I'll help troubleshoot. Because honestly? That "how to put password on apps" search shouldn't leave you more confused than when you started.

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