MAJOR UPDATE
Focus Up with App Lock
Choose the apps that pull you away. Open one and Beatcode asks you to practice first. Then they’re yours for the day.
Beatcode: Coding Interview
Learn algorithms by playing
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
New: App lock. Choose the apps that pull you away, and Beatcode keeps them locked each day until you practice.
Many coding interview problems are a handful of patterns in disguise. Beatcode teaches those patterns the way they actually click: by letting you be the algorithm.
LEARN BY DOING
Every lesson puts a real algorithm in your hands. Slide the window, move the pointers, push onto the stack, fill the BFS queue. A real implementation checks every move, and when you make a wrong one, Beatcode plays it out so you can see exactly why it fails.
FEEL WHY IT’S FAST
Try the obvious way first and watch the work pile up. Then do it with the pattern and see the gap at real interview scale: 10,000 steps instead of 50 million.
PROVE IT, THEN CODE IT
Short “why is this safe?” questions lock in the invariant behind each pattern. Then tap through the Python line by line as the board follows along, and fill in the template yourself.
SPOT THE PATTERN
Interviews test recognition. Every lesson ends by spotting the pattern in a fresh problem, and Pattern Radar is a fast-paced round that trains you to name the right tool. Misses come back until they stick.
LOCK DISTRACTING APPS
App lock keeps the apps you choose locked each day until you practice. Pattern Radar, a Practice board or your next lesson unlocks them until midnight.
SEVEN PATTERNS, FREE
• Two Pointers
• Hash Map
• Sliding Window
• Binary Search
• Stack (including the monotonic stack)
• Intervals
• Breadth-First Search
FOURTEEN TRICKS (BEATCODE PRO)
Short lessons on the clever one-off ideas interviewers love, open after your first two patterns:
• XOR Cancellation
• Fast and Slow Pointers
• Boyer–Moore Majority Vote
• Prefix Sums with a Hash Map
• Index Marking
• Kadane’s Algorithm
• Dutch National Flag
• Rotate by Reversing
• Union-Find
• Trie (Prefix Tree)
• Dijkstra’s Algorithm
• Greedy (Farthest Reach)
• Bit Masks (Sets as Numbers)
• Two Heaps (Running Median)
KEEP IT GOING
• Collectible pattern cards with cues, invariants and templates
• Daily streak, trophies and Game Center leaderboards
• Rewards: spend your XP on streak protection and more
• Endless practice boards with fresh inputs and a three-star score
• Solve the real one: after each lesson, try a real interview problem with a Lock Screen timer and hints you unlock one at a time
EVERYWHERE YOU ARE
• Home Screen widgets: answer a Spot It card right from the widget, keep an eye on your streak, or jump into your next lesson
• Lock Screen and StandBy widgets, plus a Control Center button for a quick Radar round
• Answer the daily reminder’s card straight from the notification
• Apple Watch: your pattern cards, complications for your streak and a Spot It card, and quick Radar rounds with haptics
• Siri: “Quiz me in Beatcode”
BEATCODE PRO
The seven core lessons and their practice boards, challenges, Radar questions and real interview problems are free. Beatcode Pro unlocks the remaining lessons and their content on iPhone, Apple Watch and widgets. Pattern cards, trophies, your streak, reminders and Game Center are also free.
• Beatcode Pro Monthly: $7.99 a month
• Beatcode Pro Yearly: $39.99 a year, with a 7-day free trial for new subscribers
Prices are in US dollars and may vary by country. Payment is charged to your Apple Account when you confirm the purchase, or when the free trial ends. Subscriptions renew automatically at the same price unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. Manage or cancel anytime in your Apple Account’s subscription settings. Any unused part of a free trial ends when you subscribe.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://beatcode.app/privacy/
PRIVATE BY DESIGN
You can learn without signing in. Optional Game Center features use your Apple Account. Your learning progress stays on your devices and in your iCloud, and purchases go through Apple. Beatcode has no ads and does not track you across apps or websites.
Events
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
App lock: choose the apps that pull you away, and Beatcode locks them every day until you practice. Pattern Radar, a Practice board or your next lesson unlocks them until midnight.
Rewards: spend the XP you earn on streak protection, a repair for yesterday’s missed day, or two more minutes in an interview round.
Pattern Radar now asks about all seven core patterns from your first day.
Your progress now syncs between your devices through iCloud.
Short sounds now play for right and wrong answers, and when you finish a lesson, a challenge or a Radar round.
Learn and lessons move more smoothly.
The developer, Mark Christian Buot, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mark Christian Buot
- Size
- 34.7 MB
- Category
- Education
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Infrequent
Contests
- In-App Purchases
Yes
- Beatcode Pro Monthly USD 3.59
- Beatcode Pro Yearly USD 17.99
- Copyright
- © Mark Buot
