Cogwright
Parametric CAD for iPad — plain-language tools, exact STEP, STL, and DXF in and out, and an editable build history (the Steps panel). It runs entirely on the iPad: no account, no server, works offline.
Where do I start learning?
It's built in. Learn Cogwright has lessons and guided builds, and there are forty-two self-running demos — twenty-one real parts, each built two ways, by hand and by keyboard. Every demo ends as a file you can keep editing.
What's free, and what needs the purchase?
The free tier includes every lesson and demo, plus opening, viewing, and exporting any part — STEP, STL, DXF, or project file — forever. Creating and editing your own parts is the paid tier, the full version: $4.99 a month, $34.99 a year, or $79.99 once. Files are never held hostage — export never needs a purchase.
Does Cogwright need an account or an internet connection?
No. There's no account and no sign-in, and the app works fully offline. Purchases are handled by Apple through the App Store.
How do I restore my purchase on a new iPad?
Your purchase lives with your Apple Account. Open Settings (the gear) → Plans and restore your purchase from there — no charge, no account with us involved.
The app hit a problem — what should I send you?
If Cogwright runs into a problem, it offers a one-file diagnostics report the next time it launches. Nothing is ever sent automatically — you share it by choice, through Mail or Files. Attaching that file to your email is the single most useful thing you can do.
What file formats does it read and write?
Out: STEP (exact solids), STL in millimeters for slicers, DXF for laser cutting, and the editable Cogwright project file. In: STEP, from Files, mail, or drag-and-drop.
Pansophia
The STEM Pocket Reference for iOS and Android — 25,000+ formulas, concepts, and reference tables across 18 disciplines.
What's the fastest way to get help?
The built-in feedback tool. Open Pansophia, go to Settings, and tap "Send Feedback" — it automatically includes helpful diagnostic information with your message.
How do I restore my purchases on a new device?
On iOS, go to Settings within the app and tap "Restore Purchases." On Android, purchases are automatically restored when you sign in with the same Google account.
Does Pansophia require an internet connection?
No. All entries are bundled with the app and available offline. The only optional network request is for 3D molecular structures in the Chemistry section.
How do I choose my free disciplines?
Simply browse any discipline. The first three you explore become your free favorites, giving you access to 25% of entries in each. Unlock full access for $0.99 per discipline or $9.99 for all 18.
What devices is Pansophia available on?
Pansophia is available on iPhone, iPad, Mac, Apple TV, and Android phones and tablets. One purchase covers all Apple platforms through the App Store. Android purchases are managed through Google Play.
How do I report an error in the content?
Email us at
[email protected] with the discipline, entry name, and a description of the issue. We take accuracy seriously and will fix it in the next update.