AityTech (AI Typhoon Tech) is an indie 個人事業主 (Kojin Jigyou Nushi — sole-proprietorship) studio based in Japan, founded in 2022. The "AI Typhoon" comes from a decade spent on the manufacturing floor — making excavator parts for Hitachi, Sumitomo, Komatsu, and Mitsubishi — combined with modern AI and software development. The studio ships factory digital-transformation tools, AI visual-inspection systems, and consumer-facing apps.
StudyKits is the consumer line: native iOS, iPadOS, and macOS apps for cloud and project-management certifications. It started after preparing for AWS certifications first-hand and finding that every existing study app either farmed real exam questions (against the policy of every cert body), buried the learning under banner ads, or charged a recurring SaaS fee that punished slow studying. StudyKits is the response — built on the official exam blueprint, one-time IAP pricing per cert, fully offline, with FSRS spaced repetition instead of question-dump memorisation.
Each StudyKits app is built around the issuing body's published exam guide, never scraped from forums. Questions are written from scratch, mapped to the official domains, and reviewed against the AWS / Google Cloud / PMI source material before shipping. The apps stay native to Apple platforms because that's the audience that values privacy, offline access, and one-time purchase pricing — and because Apple's accessibility primitives (Dynamic Type, VoiceOver, Smart Invert) ship for free with the platform.