14 Days Free Trial

Turn Screen Time Into
Brain Time.

Stop the mindless scrolling. Install the Android app on your child's phone, and apps stay securely locked until they earn their screen time by solving adaptive, bite-sized questions in Maths, Science, English, GK, and Moral Values.

Builds Knowledge 100% Ad-Free Guilt-free parenting
+20 min earned
YouTube is locked. Answer to unlock.
General Knowledge
Try it. Tap an answer.

20 minutes unlocked

Great job. Enjoy your time.

5 day streak
How it works

Set it up once.
Watch them learn.

1

You choose the apps

YouTube, Instagram, games, anything that eats the evening. Settings stay securely behind your PIN.

2

Kids answer to unlock

Short questions across maths, science, English, GK, and Moral Values.

3

Right answers earn time

You decide how many minutes each quiz is worth. When the earned time is up, the lock returns.

Features

Guilt-free parenting.

Simple for you. Hard for kids to get around. Designed to naturally make them think before they scroll.

Learning Reports

Track daily accuracy, questions answered and screen time earned, and see which subjects need a little extra attention.

75%
Accuracy

Adaptive Difficulty

Tricky topics come back more often. Mastered ones are spaced out.

Built to Stay On

Split-screen and floating windows don't bypass the lock, and the guard restarts itself if the phone closes it.

Fresh Questions Every Time

Maths problems are generated on the fly, so answers can't simply be memorised.

14 × 61, 4, 9, 16, ?144 ÷ 12Z, W, T, Q, ?

Built-in Reward System

Correct answers earn coins. Children save up for bonus screen time within the daily limit you set.

500 coins · 30 min1000 coins · 100 min2000 coins · 3 hrs

Guard History

Survives restarts and background cleaners. Parents can see when the guard stopped and why.

Why parents choose it

The end of screen-time arguments.

Parents in our closed testing told us it works well for their families.

Without LockDuck
  • Daily arguments over the phone
  • Hours lost to endless scrolling
  • You are the one who says no
  • No idea what they are learning
With LockDuck
  • The lock comes on by itself
  • Screen time is earned with answers
  • Your child knows exactly what to do
  • A learning report shows their progress
MathsScienceEnglishGeneral KnowledgeMoral Values
Private by design

Your family's data stays yours.

LockDuck doesn't even ask for internet access permissions. Nothing about your child ever leaves their phone.

Read the privacy policy
No online sign-upsNo emails, passwords, or cloud accounts
No adsNever, for any reason
No data sharingWe never collect, see, or sell your data
No internet permissionEverything stays on your phone
Pricing

Simple, affordable pricing.

Try everything free for 14 days. No card needed. After the trial, choose a plan and pay through Google Play. Plans are non-refundable once purchased.

Monthly

₹2,388
₹199
  • 14‑day free trial
  • All educational subjects
  • Cancel any time before renewal
25% off

Yearly

₹2,388
₹1,799
  • 14‑day free trial
  • Everything in Monthly
  • Best value for families
Pay Once

Lifetime

₹2,388
₹4,999
  • 14‑day free trial
  • All future updates
  • No recurring fees
FAQ

Good questions.

Which phones does it work on?

Android phones. We have tested on Vivo and Motorola devices so far. There's no iPhone version yet.

Can my child just uninstall it?

With Android's Device Administrator option on, it can't be removed without switching that off first. A determined child can still find workarounds, so LockDuck works best alongside a chat about screen time.

Why does it need "Usage Access" and other permissions?

Each does one job: seeing which app is open, showing the lock on top of it, and keeping the guard running. The privacy policy explains each one.

Does it collect my child's data?

No. There are no accounts or analytics, and the app has no internet permission. Progress stays on the phone.

How do I see how my child is doing?

Open the Learning Report on the Home screen. Pick a date range, such as today, last 14 days or a custom period, to see questions answered, accuracy, active days and screen time earned.

What are coins for?

Right answers earn coins that kids can trade for extra screen time in the coin shop. Parents can switch the shop off or set a daily limit for bonus time.

What if a parent forgets the PIN?

Parents get a recovery code when they create the PIN. Keep it somewhere safe. It lets you set a new PIN.

How much will it cost?

LockDuck costs ₹199 a month, ₹1,799 a year, or ₹4,999 once for lifetime. Every install starts with a 14‑day free trial, and no card is needed. After the trial, the guard pauses until you choose a plan, which you pay for through Google Play. Once a plan is purchased it cannot be refunded, which is why we give you 14 days to try it first.

Make screen time count.

Stop fighting over the phone. Let LockDuck do the parenting. Start your 14‑day free trial or book a quick 1-on-1 demo today.