# Climb Test Prep > Climb is a digital SAT prep app for iOS built around mastery, not engagement. Students set a target score and test date; Climb starts with a free 30-question adaptive assessment (free to download, per-question feedback, up to 10 free AI-tutor questions during the test, projected score range at the end), commits to a plan (highest-value subtopic → short lesson → drills → a check to advance), and paces daily practice to the test date. Leitner spaced repetition + Beta-posterior mastery tracking. An AI tutor named Wren watches how a student answers, teaches against their actual mistakes rather than a generic curriculum, remembers what tripped them up across sessions, and can read a photo of handwritten scratch work to point at the exact wrong step. A full bank of practice questions across all eight official digital-SAT domains (Algebra, Advanced Math, Problem-Solving and Data Analysis, Geometry and Trigonometry, Craft and Structure, Information and Ideas, Standard English Conventions, Expression of Ideas), plus adaptive tutorials — every question native to the digital SAT's format, not paper-test drills. Privacy-first: study data, Wren's chat history, and handwriting photos stay on-device; no data sale, no telemetry. Free to download and start; three paid tiers billed by Apple: Monthly $19.99/mo, Season Pass $59 for 4 months (non-renewing, recommended default), Annual $149/yr. No XP, no streaks, no leaderboards. Benchmarked against raw frontier AI (Sonnet, Opus, GPT-5, Gemini): Climb-Wren's worst run beats every raw frontier model on mode-shape (regex-scored). Built by KyrosWorks LLC. Live on the App Store: https://apps.apple.com/app/id6767691030 Independent study tool, not affiliated with, endorsed by, or sponsored by the College Board or the SAT program. ## Pages - [Homepage](https://climbtestprep.app/): Product overview — how it works, the AI tutor, content scale, privacy, pricing, competitor comparison, benchmark results, and FAQ for parents. - [Methodology](https://climbtestprep.app/methodology): Full benchmark methodology — Climb-Wren vs. raw frontier AIs on a 22-scenario SAT-teaching eval. Worst-of-4-runs framing. Reproducible. - [Privacy Policy](https://climbtestprep.app/climb-privacy/): Study data, chat history, and handwriting photos stay on-device; the proxy is a passthrough and does not log prompt content. ## Contact - Email: will.hays@gmail.com - App Store: https://apps.apple.com/app/id6767691030 - Website: https://climbtestprep.app