# Lock Code Filter Challenge — Challenge guess the lock code

> Brain-training game guessing partially obscured lock codes and emojis. (iPhone/iPad app by NGUYEN QUY SON.)

- Source: https://appshunter.io/ios/app/lock-code-filter-challenge/id6621219138 (this page in markdown: same URL + `.md`)
- Developer: [NGUYEN QUY SON](https://appshunter.io/developer/1713872645)
- Category: Entertainment
- Price: Free with in-app purchases
- Rating: 4.43/5 from 67 App Store ratings · 14 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 152 MB
- Languages: Arabic, Bangla, English, French, German, Hindi, Indonesian, Italian, Korean, Portuguese and 2 more
- Released: 2024-08-18
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/lock-code-filter-challenge/id6621219138/reviews.md

## What is Lock Code Filter Challenge?

Test your ability to guess the lock code

Lock Code Filter Challenge is a fun video recording app with a lock code filter that helps you train your brain and logical thinking.

The lock filter gives you a brain challenge by covering half of the lock code. You need to think and judge to come up with the correct lock code to unlock.

It's very simple to create a video: choose a filter, press the button to record a video and join the lock code guessing challenge.

With a beautiful interface and relaxing background sounds, you can freely think and make your judgment.

- Lock Code: With the lock code filter, you need to find the correct number that is half covered. Record a video of your number guessing process

- Lock Emoji: The lock code filter has been replaced by emojis. Use your intelligence to guess the half-covered emojis.

Share with friends and family for fun together

Download Lock Code Filter Challenge to challenge your brain and judgment.

Thank you for using our app. Please give us feedback on your experience using our product.

Privacy Policy: http://novosys-ios.pro.vn/privacy-policy.html

Terms of Use: http://novosys-ios.pro.vn/termsofuse.html

## Key features

- Lock code guessing challenge
- Half-covered lock code filter
- Emoji lock guessing
- Video recording of guessing process
- Brain training and logical thinking
- Relaxing background sounds

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly - Lock Code | $2.49 | per month |
| Yearly - Lock Code | $29.99 | per year |


## Recent user reviews (10 of 14)

All indexed reviews: https://appshunter.io/ios/app/lock-code-filter-challenge/id6621219138/reviews.md

### 5/5 — I like it because it’s cool

*2025-03-18*

It’s almost like my favorite game

### 5/5 — Tight chugzkkb

*2025-02-10*

Hffhxidhrd

### 5/5 — I did it

*2024-12-16, version 1.0.1*

Heiksjak

### 5/5 — Cool

*2024-11-28*

Very cool

### 5/5 — This game is so cool

*2024-11-02, version 1.0.1*

You can do filters like lock,emoji, others.

### 5/5 — its slay

*2024-10-30, version 1.0.1*

cute fun my kid asked me for this game and i said yes and she love it 🥰

### 5/5 — Eyes and yucky ears and the eyes and eyes of

*2024-10-30*

I have no clue how you got the idea that the

### 5/5 — It’s really good

*2024-10-26, version 1.0.1*

Just got memberships to pay for which is annoying that’s the only bad thing overall 10\10

### 5/5 — Dayson

*2024-10-23*

1235

### 5/5 — try to find this game

*2024-10-19*

It’s time to play.

## Frequently asked questions about Lock Code Filter Challenge

### What is Lock Code Filter Challenge?

Lock Code Filter Challenge is a video recording app designed to test and improve your brain's logical thinking and judgment. It presents users with a lock code where half of the digits are covered, requiring them to deduce the correct sequence to unlock.

### How does the lock code filter work?

The lock code filter covers half of the digits in a lock code, presenting a challenge for the user. You must use your intelligence and judgment to guess the missing numbers to successfully unlock the code. The app also offers an emoji version of this challenge.

### Is Lock Code Filter Challenge free to download?

Yes, the app is free to download. It offers in-app purchases and may contain advertisements to support its development and operation.

### What are the use cases for this app?

This app is ideal for anyone seeking a fun and engaging way to train their brain, improve logical reasoning, and enhance their judgment skills. It's a casual game that can be enjoyed by individuals looking for a mental workout.

### Can I record my gameplay?

Yes, the app allows you to record your video while you are engaged in the lock code guessing challenge. This feature lets you capture your thought process and share your progress.

## Version history (last 3 releases)

### 1.0.2 — 2025-01-08

- New version 1.0.2
- Overall performance improved

### 1.0.1 — 2024-08-24

- New version 1.0.1
- Overall performance improved
- Add in-app purchase

### 1.0.0 — 2024-08-18

No release notes.

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All apps by NGUYEN QUY SON: https://appshunter.io/developer/1713872645

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*