Academics
GrammarForge
Master grammar, sentence structure, and language conventions through interactive sentence diagramming puzzles, error detective investigations, and style editing challenges — turning grammar rules into engaging game mechanics. Ages 9-14.
Meet your mentor
Every Spark & Anvil app has a friendly mentor character that demonstrates, praises, and patiently scaffolds learning. On-device AI personalizes the mentor's responses to your kid's progress — never connecting to a server, never collecting data.
#4A6FA5 GrammarForge turns grammar into a game! Solve sentence diagramming puzzles, investigate "grammar crime scenes" where sentences have gone wrong, combine clauses like building blocks, and go on punctuation missions. You will become a sentence structure expert without it ever feeling like homework.
What's inside
Sentence Diagramming Puzzles
Drag words onto a Reed-Kellogg diagram to show how a sentence is built. Place the subject on the left, the verb in the middle, and objects on the right. Watch t
Grammar Crime Scenes
A sentence has been broken! Find the grammar mistake hiding in each sentence. Is it a run-on? A fragment? A misplaced modifier? Fix the crime and earn your dete
Clause Combining
Take short, choppy sentences and combine them into longer, more interesting ones. Use conjunctions, relative pronouns, and other connecting words to build compl
Punctuation Missions
Place commas, semicolons, quotation marks, and other punctuation in the right spots. Each mission focuses on a different punctuation rule so you learn one skill
How GrammarForge handles your kid's data
- ✅ All progress, settings, and AI-generated content stays on the device
- ✅ No analytics, no tracking, no third-party SDKs
- ✅ No ads, no in-app purchases — you pay once
- ✅ COPPA compliant under the 2026 FTC amendments
- ✅ Parental controls + session limits + content filters built in
GrammarForge runs on ForgeKit — the open-source Swift Package Manager framework that powers every Spark & Anvil app. ForgeKit ensures consistent accessibility, COPPA compliance, and design language across the portfolio, so your kid's progress and preferences feel coherent across every app they touch.
Coming to the App Store
GrammarForge is in active development. Email us to hear when it ships — no marketing, no spam, just a one-shot launch announcement.
Email me at launch