Syntactic vs Afterlid

Syntactic is a complete Rust learning environment that runs entirely on your device — a real Rust compiler in your pocket. WRITE AND RUN REAL RUST Write Rust in a fast editor with syntax highlighting, inline errors, and code completion, then compile and run it on-device. No account, no server round-trip, no internet required — the actual Rust compiler runs on your iPhone and iPad. LEARN FROM THE RUST BOOK The complete Rust Programming Language book is built in, formatted for comfortable reading, with runnable examples one tap from the editor. Check your understanding with built-in quizzes as you go. PRACTICE WITH CHALLENGES Sharpen your skills with 66 hands-on coding challenges across three difficulty tiers. Write your solution, tap Submit, and an on-device test suite grades it instantly — with the failing case and your own debug output right there when you need them. EXPLAIN ERRORS WITH ON-DEVICE AI (OPTIONAL) Stuck on a compiler error? An optional on-device AI can explain it in plain language, grounded in your own code — downloaded only if you choose, and running fully offline. EVERYTHING ON-DEVICE Your code never leaves your device. There is no sign-in and no tracking. Compiling, running, reading, and practicing all work completely offline, anywhere. Syntactic is an independent, unofficial app. It is not affiliated with or endorsed by the Rust Foundation.

AfterLid is the iPhone companion for long-running work on your Mac. Check that your computer is online, healthy, and still working—without opening the lid or being in the same room. SEE YOUR MAC FROM ANYWHERE • View live Sleepy, Awake, and Always On status • Check online state, lid state, battery, power source, thermal pressure, and safety limits • Follow high-level AI agent activity and see when work needs your attention • Track usage windows from supported AI provider connections • Link your Macs to one account and switch between them • Use Home Screen widgets for quick status and mode access CONTROL POWER MODES Sleepy returns your Mac to its normal power behavior. Awake prevents idle sleep while the lid is open. Always On keeps eligible work available with the lid closed, within strict safety limits. Your Mac always has the final say. Battery, thermal, heartbeat, and session-duration safeguards can stop an Always On session automatically. MAKE IT YOURS Choose a character whose animation follows your Mac’s current mode. Browse approved characters in the marketplace, switch your active character across linked devices, or use Pro to create and import a validated character pack. FREE AND PRO Free includes live read-only Mac status, one supported usage connection, and access to saved characters. AfterLid Pro adds remote mode control, agent activity, all supported usage connections, and character creation and import. Eligible accounts can try full access for seven days. PRIVATE BY DESIGN Your AI prompts, commands, project paths, work files, and provider credentials stay on your Mac. AfterLid only relays the sanitized status needed to show health, activity, usage, and requested controls. REQUIREMENTS Install AfterLid on your Mac, sign in with the same account on both devices, and approve the Mac link once. Remote features require an internet connection.