Finley is built on the Science of Reading — decades of peer-reviewed research on how children learn to read, synthesized by cognitive scientists, linguists, and educators.
Hearing and manipulating the individual sounds in spoken words
Mapping letters and letter patterns to sounds for decoding
Reading accurately, quickly, and with expression
Understanding words and constructing meaning from text
Our curriculum follows Ehri's four phases of word reading development — the gold standard framework in literacy research — to sequence skills in the order children are neurologically ready to learn them.
Letter recognition, initial sounds, environmental print awareness. Children learn to identify letters and associate sounds with symbols.
CVC words, basic sight words, beginning and ending consonants. Children begin connecting letters to sounds in partial patterns.
Full decoding, word families, fluency building. Children apply systematic phonics knowledge to read unfamiliar words.
Multi-syllable words, morphology, comprehension strategies. Children recognize patterns in chunks, reading with automaticity.
Ehri, L.C. (2005). Learning to read words: Theory, findings, and issues. Scientific Studies of Reading.
Most "adaptive" apps just get harder when your child gets answers right. Finley uses Bayesian Knowledge Tracing (BKT) — the same algorithm used by Carnegie Learning and other research-backed educational systems.
What makes BKT different: BKT tracks mastery of individual skills, not just overall performance. It knows the difference between a lucky guess and real understanding — and it never moves on until your child is genuinely ready.
Finley tracks mastery across 40+ individual reading skills — things like CVC blending, initial sound isolation, sight word automaticity, and vowel team recognition. Each skill has its own mastery probability, updated after every response.
How it feels: Your child never feels bored (content that's too easy) or frustrated (content that's too hard). Finley finds the sweet spot — the zone of proximal development — and stays there.
Finley uses the Leitner spaced repetition system to ensure your child truly learns new words — not just recognizes them in the moment and forgets them the next day.
Spaced repetition is one of the most well-studied techniques in cognitive science for building long-term memory. The principle: reviewing information at increasing intervals strengthens memory far more effectively than repeated practice in a single session.
Finley uses age-adjusted review intervals that match children's developing memory capacity:
| Age Group | Box 1 | Box 2 | Box 3 | Box 4 | Box 5 (Mastered) |
|---|---|---|---|---|---|
| Ages 4–5 | Same day | 1 day | 3 days | 7 days | 14 days |
| Ages 6–8 | 1 day | 3 days | 7 days | 14 days | 30 days |
| Ages 9–12 | 1 day | 4 days | 10 days | 21 days | 45 days |
Finley uses Claude by Anthropic — one of the world's most capable and safety-focused AI models — to generate reading content personalized to your child's exact level.
Your child isn't reading the same stories as every other kid. Every passage, every question, every phonics exercise is generated specifically for their current skills, at their exact reading level, matched to their age group's interests.
🔒 Privacy by design: We never send your child's name or any personal information to the AI. Only anonymized reading level data and skill context are used to generate content. Your child's identity is never part of any AI prompt.
AI-generated content passes through our quality systems, which verify age-appropriateness, reading level accuracy, and educational alignment before delivery to your child.
Each session is automatically orchestrated based on your child's data — which skills need work, which words are due for spaced review, and what content mix will keep them engaged without overwhelming them.
Guessing detection: Finley measures response time for every answer. Responses under 300ms — or responses in patterns that suggest random tapping — are flagged as guesses and excluded from mastery calculations. This ensures your child is actually engaging, not just tapping through.
The engine does the planning so your child can focus entirely on learning.
Finley's progress tracking is designed to translate complex adaptive data into meaningful signals for parents — and to produce measurable literacy gains, not just engagement metrics.
🌟 30-Day Progress Guarantee: If your child completes at least 10 sessions in their first 30 days and you don't see measurable improvement, we'll refund your first month. No questions asked.
Finley's adaptive engine, curriculum, and content design are grounded in published academic research.