No ads. No tracking. Everything stays on your child's device. Sound Bloom listens to your child say letter sounds, remembers what they struggle with, and brings Grandma's voice into bedtime stories — all for $3.99, one time, forever.
Join the closed beta — limited to 30 families.
"I have a PhD from Berkeley. I spent 9 years building systems that learn from data. But when my twins needed to learn phonics, every app was either $13/month, full of ads, or sent my kids' voice data to a server somewhere. So I built the app I wished existed."
I'm Diane — mom of three, including twins under two. There's no growth team. No investors. No reason to keep your kid on-screen longer than they need to be. The spaced repetition, the pronunciation scoring, the grandparent recording — every feature exists because a real family needed it.
| Sound Bloom | Teach Your Monster | Hooked on Phonics | Homer | |
|---|---|---|---|---|
| Spaced Repetition | ✓ SM-2 | ✗ | ✗ | ✗ |
| Pronunciation Scoring | ✓ On-device | ✗ | ✗ | ✗ |
| Familiar Voice Narration | ✓ Record | ✗ | ✗ | ✗ |
| Phonics Blending | ✓ Animated | ✓ | ✓ | ✓ |
| Price | $3.99 once | $5.99 once | $6.99–16.98/mo | $12.99/mo |
| Works Offline | ✓ 100% | ✗ | ✗ | ✗ |
| Dark / Bedtime Mode | ✓ | ✗ | ✗ | ✗ |
Sound Bloom combines two research-backed systems that no other phonics app uses together: spaced repetition that adapts to your child's memory, and audio classification trained on how young children actually produce speech sounds.
Your child sees a letter and says the sound out loud. On-device speech recognition — trained on child developmental phonetics research — scores their pronunciation in real time. Not adult speech models repurposed for kids. Models built from the ground up for how 2-to-5-year-olds actually produce sounds.
All audio processing stays on the device. Nothing is sent to the cloud. Ever.
Letters your child struggles with show up more often. Letters they've mastered fade back. Every child gets a learning path that fits them — powered by the same spaced repetition algorithm behind medical school flashcards and Duolingo.
The algorithm runs entirely on your device. No data is sent anywhere. No two children see the same sequence after the first day.
Letters, digraphs, trigraphs, Dolch sight words
On-device models tuned for ages 2–5
Story context vs. isolated flashcards (2025 study)
Spaced repetition vs. massed practice
The letters deck is free forever. Try it with zero risk.
Four structured decks that grow with your child — like a plant blooming.
Only in Sound Bloom
Anyone your child loves can record their voice reading the stories. Grandma across the country. Dad on a work trip. Your child hears someone they love — not a robot. The voice never leaves your phone.
C-A-T slide together on screen and become "cat." Your child sees the moment reading clicks — the connection between letter sounds and words, animated so it sticks.
The app plays a sound. Your child taps the matching letter. Builds phonemic awareness through a game they actually want to play — not worksheets on a screen.
Master a set of letters, unlock an animated storybook that uses only those letters. Words highlight as the story is read aloud. Reading has a purpose — and your child feels it.
No accounts to create. No cloud uploads. No analytics tracking your child. Fully COPPA compliant.
On planes, in cars, at grandma's house. No loading screens. No "please connect."
Twins? Siblings? Each child gets their own progress, guide animal, and learning path.
Dark mode for bedtime practice without the screen glare. Matches your device settings automatically.
Join the closed beta — limited to 30 families.