Seedlingo Updates

Growth Diaries

App updates, language learning tips, and stories from our community. Full posts coming soon — tap a preview below.

Seedlingo is Here: Plant Your First Word Today

After months of cultivation in our greenhouse, Seedlingo officially launched on Android with 121 languages, SM-2 Spaced Repetition, and the Sprout mascot you've all been asking about.

MAY 7, 2026 · 3 min read Preview 🌱 Design

Designing Sprout: The Mascot That Grows With You

We wanted a mascot that wasn't just cute — it had to mirror your learning journey. Here's the full story behind Sprout's design, from sketch to Flutter CustomPainter.

MAY 5, 2026 · 5 min read Preview 🧠 Science

Why SM-2 Still Works: The Science Behind Our Engine

Spaced repetition is 40+ years old. So why do we still swear by it? We break down exactly how our SM-2 implementation adapts to your personal learning curve.

APR 28, 2026 · 7 min read Preview 🌍 Languages

How We Built a Vocabulary Dataset for 121 Languages

Creating high-quality, pronunciation-accurate vocabulary data at scale is hard. Here's how we curated 120,000+ words with native-speaker review and IPA phonetics.

APR 20, 2026 · 6 min read Preview ⚡ Technical

Offline TTS at Scale: Running Sherpa-ONNX on Android

Seedlingo speaks every word you learn — offline, on-device, without any server calls. Here's how we integrated Sherpa-ONNX with the full model download pipeline.

APR 14, 2026 · 8 min read Preview 🗺️ Roadmap

What's Next for Seedlingo: iOS, Multiplayer & More

The garden is just getting started. Our public roadmap includes an iOS release, multiplayer "Circle" mode, AI-generated sentence context, and a full web dashboard.

MAY 1, 2026 · 4 min read