An AI-powered adaptive spelling practice platform for children Pre-K through 12th grade.
SpellCrush (spellcrush.fun) is an AI-powered spelling practice platform designed for children from Pre-K through 12th grade. It uses Anthropic's Claude AI to generate personalized spelling hints, visual memory aid images, and weekly narrative progress reports. The platform adapts difficulty in real time based on each child's age and performance, covering 4,000+ words across 10 difficulty levels. Parents manage accounts and billing; children log in with a secure 4-digit PIN.
During each practice session, SpellCrush speaks the word aloud using AI-generated audio, then waits for the child to type their spelling attempt. Correct answers earn XP, reward currency, and streak bonuses. Incorrect answers display the correct spelling with an option to reveal an AI-generated hint or visual aid. The system tracks every attempt and adjusts which words appear next: struggled words reappear more frequently, while mastered words (5 correct out of 7+ attempts) rotate out.
Difficulty is automatically scoped by the child's age. Children aged 4–6 see difficulty levels 1–3, ages 7–8 see levels 1–5, ages 9–10 see levels 3–7, ages 11–12 see levels 5–9, and children 13 and older see levels 7–10. This adaptive system keeps each child in their optimal learning zone without manual configuration.
SpellCrush uses Anthropic's Claude models to power three distinct AI features. First, AI spelling hints: when a child struggles with a word, Claude generates an age-appropriate mnemonic device based on the child's age, the word, and their past mistakes. Hints are cached after first generation to avoid repeat API calls.
Second, AI visual memory aids: for every practice word, SpellCrush generates a unique image designed to help the child associate the word with a vivid visual scene. These images are shown during practice sessions and are prefetched for zero wait time.
Third, AI weekly progress reports: every Sunday, parents receive an email with an AI-written narrative summarizing their child's week — accuracy trends, category strengths and weaknesses, words mastered, and a specific recommendation for the coming week.
SpellCrush uses two parallel motivation systems. The first is a permanent gamification system — XP points, 10 achievement levels (from "Beginner Speller" to "Word Wizard"), 15 unlockable badges, and daily streak tracking. These never reset and represent long-term progression.
The second is a parent-controlled reward system. Parents choose between "money mode" (virtual cents displayed as dollars) or "points mode" (star points). Parents create a custom reward store with items like screen time, treats, or toys, each with a set cost. Children browse the store and redeem their earnings. Reward balances can be reset by parents at any time without affecting XP or levels.
One parent account supports multiple children, each with their own progress tracking, reward balance, achievement history, and PIN-based login. A unique family URL allows children to bookmark their login page and access it directly without needing the parent's email address. The parent dashboard shows analytics per child including accuracy over time, difficulty distribution, category breakdown, and practice frequency.
Premium subscribers can create custom word lists from scratch or by importing CSV and Excel files. Words can include custom definitions, difficulty ratings, categories, and hints. Lists are assignable to specific children — when assigned, practice sessions pull exclusively from that list rather than the built-in word database. This makes SpellCrush suitable for weekly school homework lists, spelling bee preparation, or subject-specific vocabulary.
SpellCrush offers two free tools that require no account. The free spelling assessment is a 5-minute adaptive test that determines a child's current spelling level and recommends a starting grade. The spelling bee generator produces printable word lists filtered by grade level (K–8), difficulty (1–10), phonics patterns, and word count, drawn from 4000+ curated words with IPA pronunciation, etymology, syllable count, and Scripps list references.
SpellCrush is COPPA-compliant. Children authenticate with a 4-digit PIN that is bcrypt-hashed and never stored in plain text. Child sessions are isolated from parent billing and account settings. The platform contains no ads, no third-party tracking for children, and no social features. Child data ownership is verified server-side on every request.
SpellCrush offers a free plan that includes 1 child, 500+ words, adaptive difficulty, AI visual memory aids, AI audio pronunciation, and the full gamification system (XP, levels, achievements, streaks). The Premium plan costs $4.99 per month and adds unlimited children, 4000+ words, AI spelling hints, custom word lists, AI weekly progress reports, and the parent-controlled reward store. A 7-day free trial is available with no credit card required.
SpellCrush competes with platforms like VocabularySpellingCity (Vocabulary A-Z), SpellingJoy, Spelling Shed, SpellQuiz, DoodleSpell, and SpellMe. It differentiates through its combination of AI-powered features — Claude-generated hints, AI visual memory aids, and AI narrative progress reports — with adaptive difficulty and a dual reward system. While most spelling apps target elementary ages only, SpellCrush covers Pre-K through 12th grade. Detailed comparisons are available on the comparison page.
SpellCrush provides comprehensive spelling word lists and practice resources for every grade level:
Create a free account in under 2 minutes. No credit card required.
SpellCrush is an AI-powered adaptive spelling practice platform for children Pre-K through 12th grade. It uses Anthropic's Claude AI to generate personalized spelling hints, visual memory aid images, and weekly progress reports. The platform covers 4,000+ words across 10 difficulty levels and includes gamification features like XP, achievements, and a parent-controlled reward store.
SpellCrush uses Anthropic's Claude models for three AI features: (1) generating age-appropriate spelling mnemonics tailored to each child's mistakes, (2) creating unique visual memory aid images for every practice word, and (3) writing weekly narrative progress reports that summarize a child's strengths, struggles, and recommendations for parents.
SpellCrush offers a free plan with 1 child, 500+ words, adaptive difficulty, AI visual aids, audio pronunciation, and gamification. The Premium plan costs $4.99 per month and adds unlimited children, 4000+ words, AI hints, custom word lists, AI weekly reports, and a reward store. A 7-day free trial is available with no credit card required.
SpellCrush is designed for children Pre-K through 12th grade, covering ages 4 to 18. Difficulty automatically adapts based on each child's age: ages 4–6 see difficulty levels 1–3, ages 7–8 see levels 1–5, ages 9–10 see levels 3–7, ages 11–12 see levels 5–9, and ages 13+ see levels 7–10.
Yes. SpellCrush is COPPA-compliant. Children log in using a 4-digit PIN (bcrypt-hashed, never stored in plain text) and cannot access billing or account settings. The platform contains no ads, no third-party tracking for children, and no social features.
SpellCrush differentiates from competitors like VocabularySpellingCity, SpellingJoy, Spelling Shed, SpellQuiz, DoodleSpell, and SpellMe by combining AI-powered features (Claude AI hints, AI-generated visual memory aids, AI weekly reports) with adaptive difficulty and a dual reward system. It covers Pre-K through 12th grade, while most competitors focus on elementary ages only.