Read at the speed of you.
A free, voice-first reading tutor for kids ages 5–9. Built on the Science of Reading. Designed for one child at a time — yours.
Three things every kid deserves in a reading app.
Voice-first
Every instruction is spoken. Your child never needs to read to navigate. First sound plays in under 1.2 seconds — faster than any other reading app we tested.
Truly adaptive
Lumi watches every attempt and accelerates, slows down, or scaffolds in real time. No two sessions look the same. The pacing engine is doing more work than any chatbot.
Remembers your child
Tomorrow, Lumi greets your child by name and picks up exactly where they left off — including the sounds they confused yesterday. Their progress stays private.
Six minutes. Six task types. Lumi paces it for the child.
Tap the firefly.
Lumi greets your child by name.
Lumi speaks.
Every instruction is voiced — no reading needed.
Six task types.
Tap, drag, build, sequence, flash, sound-match.
Engine adapts.
Fast-forward on streaks. Scaffold on misses. Spaced review.
Ring closes.
Natural stop at 8 minutes. Hard cap at 15.
Tomorrow.
Lumi remembers and picks up exactly where you left off.
Built on the Science of Reading.
Not a tech demo. A curriculum grounded in the converged evidence base on how children learn to read.
Simple View of Reading
Reading = Decoding × Language Comprehension. Lumi addresses both.
Scarborough's Reading Rope
Phonemic awareness, decoding, sight recognition, vocabulary, fluency, comprehension — interleaved daily.
Ehri's phases of word reading
Pre-alphabetic → consolidated-alphabetic. Lumi's Level 5 targets the full-alphabetic phase.
National Reading Panel five pillars
Every session touches at least two pillars.
Curriculum alignment
UFLI Foundations
Free, ESSA-aligned phonics scope from the University of Florida.
Lexia Core5 Levels 5–12
Lumi maps exactly to the K–3 progression your child's school already uses.
ESSA Tier III
Targeting Promising Evidence certification through our first school pilots.
Already using Lexia, UFLI, or CKLA at school?
Lumi doesn't replace it — it gives your child a faster, more personal way to practice the same skills at home, after school, on the weekend. Same scope and sequence. Different pacing, memory, and accessibility.
How Lumi compares.
| Lumi | Lexia Core5 | What this means for your kid | |
|---|---|---|---|
| Voice latency (first sound) | ≤ 1.2s P50 | 2–4s typical | Faster engagement, fewer disengagement moments |
| AI tutor adapts mid-session | Yes (Claude-powered) | — | Lumi responds to this attempt, not the cohort average |
| Remembers child across sessions | Yes (longitudinal memory) | Limited | Tomorrow's session starts where today left off |
| Personalizes to interests | ✓ | — | Lumi uses your child's interests in feedback |
| Curriculum framework | Science of Reading (UFLI) | Science of Reading (proprietary) | Same pedagogical foundation |
| Cost to families | Free for every family | Paid — usually via school | Lumi has no paywall |
| Child data used for ads | Never | See policy | — |
| Child data used to train AI | Never | See policy | — |
| One-click export + delete | ✓ | — | — |
Voice latency measured on production. Lexia data from public App Store reviews and HMH/Lexia documentation.
We treat your child's data like ours.
Best-in-class privacy posture. Published. Auditable. Reviewed by a children's privacy attorney.
- COPPA-compliant (2025 amended FTC Rule)
- FERPA-ready data flows for school deployments
- California AB 1394 (Children's Online Privacy)
- California Privacy Rights Act (CPRA)
- New York SAFE for Kids Act compliant
- GDPR Article 8 honored where applicable
- kidSAFE+ Safe Harbor application planned 2026
- Public data inventory at /compliance
No advertising. Ever.
No selling child data.
No AI training on child data.
What Lumi doesn't do.
Doesn't replace your child's teacher.
Lumi is a daily practice tool, not a curriculum. Your child's teacher matters more.
Doesn't diagnose dyslexia or learning differences.
If you suspect a learning difference, see a specialist. Lumi flags patterns we notice but is not a clinical tool.
Doesn't promise specific test scores.
Reading growth depends on many factors. We can't guarantee a specific NAEP, MAP, or DIBELS outcome.
Doesn't work offline yet.
Internet required. Native iPad with offline mode is on the 2026–27 roadmap.
Lumi was built by a parent. For a kid named Remi.
I'm Tim — a thirty-year software engineer, founder of an AI agency, and dad to a five-year-old named Remi. Remi was bored with the reading app at his school. So I built him something better. Then I made it free for every kid because reading is a right, not a paywall.
Lumi is operated by Digital Boutique AI in Vista, California. We use the same stack we build for paying clients. The difference is this one is for kids.
Teaching K–2? Let's pilot Lumi at your school.
Free fall 2026 pilots open now. We provide the app, onboarding, dashboards, and direct founder support. You provide one to three K–2 classrooms and a willingness to use NWEA MAP or DIBELS for pre/post assessment.
Already have a school in mind? Forward our one-pager to your literacy coach or lower-school head.
- Free app + curriculum
- Teacher dashboards (Phase 5)
- Direct founder onboarding
- Pre/post NWEA MAP or DIBELS support
- FERPA-ready data flows
Free for every family. Forever.
Start a Lumi session in under 30 seconds. No credit card. No ads. No catch.