A New Collection of Thoughtful Learning Apps — Now Available on iOS & Android

By -
Image
I’m excited to share a set of mobile apps I’ve recently completed and published on both the Google Play Store and the Apple App Store. These apps are designed with a simple goal in mind: to make meaningful, structured content more accessible, whether you’re studying theology or improving your English vocabulary. 📱 Now Available on Both Platforms All apps are live and available for download: Google Play Developer Page: https://play.google.com/store/apps/dev?id=5835943159853189043 Apple App Store Developer Page: https://apps.apple.com/ca/developer/q-z-l-corp/id1888794100 📖 Theology & Confession Study Apps For those interested in Reformed theology and classical Christian teachings, I’ve developed a series of apps that present foundational texts in a clean, focused reading format: The Belgic Confession Canons of Dort Heidelberg Catechism Westminster Shorter Catechism Each app is designed to provide a distraction-free experience, making it easier to read, reflect, and revisit these im...
Post a Comment

COCA 16515: Master English Vocabulary Efficiently

By -

COCA 16515: Master English Vocabulary Efficiently

By Q.Z.L Team | Published on 2026-01-20

We’re excited to announce COCA 16515, a vocabulary learning app designed to help learners master the 16,515 most frequent English words from the Corpus of Contemporary American English (COCA). Built from my own experience preparing for IELTS and Canadian PR, this app turns a huge word list into a fun, structured learning journey.

Demo Video

What it does

  • 16,515 COCA words with bilingual definitions (English–Chinese).
  • Context-rich examples, multiple usages, and pronunciation guides.
  • Flashcards, quizzes, and progress tracking (XP, streaks, mastery goals).
  • Interactive web and mobile apps for study anywhere, anytime.

Try it now: Web App | Android w/ ads | Android Paid, no ads

Inspiration

While preparing for IELTS, I realized that studying random word lists was ineffective. Frequency-based, context-rich vocabulary like COCA with clear definitions, examples, and pronunciation makes a huge difference. COCA 16515 is designed to help others learn smarter and track progress.

How we built it

  • Web-based platform using Next.js, TypeScript, and TailwindCSS.
  • Flashcards, quiz module, and word browser for interactive learning.
  • Dynamic learning flow prioritizing challenging words.

Challenges

  • Structuring a large dataset of 16,515 words for interactive study.
  • Designing a clean, motivating dashboard.
  • Handling bilingual content without clutter.
  • Maintaining learner engagement.

Accomplishments

  • Integrated full COCA word list with definitions, examples, and pronunciation.
  • Created bilingual, context-rich interface and progress tracking system.
  • Turned personal IELTS experience into a scalable tool for learners.

What's Next

  • Adaptive learning algorithms to prioritize challenging words.
  • Spaced repetition and smart quizzes for faster mastery.
  • Expand bilingual support beyond Chinese–English.
  • Mobile enhancements for learning anytime, anywhere.

❤️ Support This Blog

If this post helped you, you can support my writing with a small donation. Thank you for reading.

Coffee ☕ Thanks 🙏 Extra Support ❤️

Comments

Post a Comment

Popular Posts

2026 Begins: Choosing to Stay on the Path as a Blogger

By -
Image
  Today is January 1st, 2026 . Before rushing into new goals, I spent some time looking back at the past 12 months of data for this blog — the quiet numbers that tell a very honest story. Looking Back at the Numbers Over the past year: 📈 Total views: ~44,600 👀 Daily average visits: ~200 💬 Comments: 19 💰 AdSense income: about $0.01 per month At first glance, these numbers may look small — especially the income. But when I zoom out, I see something more meaningful. This blog has been quietly read every single day . No viral posts. No aggressive promotion. No paid traffic. Just consistent readers arriving through search, bookmarks, and curiosity. That consistency matters. What the Traffic Graph Tells Me The graph over the last 12 months shows something important: Early months were quiet and uneven Mid-year brought steady growth Toward the end of the year, traffic became more stable , with clear spikes when certain posts resonated This tell...
Read more

Health Checks and Scaling Strategies for Next.js in Kubernetes

By -
Image
Health Checks and Scaling Strategies for Next.js in Kubernetes This is Part 6 and the final post of the series: Self-Hosting Next.js in Kubernetes (Without Vercel) . At this point, your Next.js standalone app: Builds cleanly Runs in a minimal Docker image Deploys correctly on Kubernetes / OpenShift Serves static assets properly Uses runtime configuration and secrets Now let’s make it resilient and scalable . Why Health Checks Matter Kubernetes relies on health checks to: Know when a pod is ready to receive traffic Restart unhealthy containers Safely roll out new versions Without proper probes, traffic can be sent to a pod that isn’t ready yet. Readiness Probe A readiness probe tells Kubernetes: “This pod can accept traffic.” For most Next.js apps, the root path works well: readinessProbe: httpGet: path: / port: 3000 initialDelaySeconds: 10 periodSeconds: 5 If your app depends on downstream services (APIs, d...
Read more