Annorite™
Native PDF markup for Mac, iPad and iPhone. Annotate drawings, measure to scale, organize the sheet set and review every detail, with markups saved as standard PDF annotations that open anywhere.
- Mac
- iPad
- iPhone
- Coming soon

■Quirebit Inc. · Independent software
Quirebit makes native apps for people whose work lives in drawings, plans and PDFs: the ones who read them closely, mark them up and sign them off.
01The name
A quire is a gathering of sheets, folded together and ready to be bound. A bit is the smallest thing a computer knows. Quirebit works where the two meet: paper’s habits, carried into software without losing the care.
02Products
Native PDF markup for Mac, iPad and iPhone. Annotate drawings, measure to scale, organize the sheet set and review every detail, with markups saved as standard PDF annotations that open anywhere.

■NextMore tools for working documents are on the bench. They will be listed here when they are ready, and not before.
03Principles
i.
Each app is written for the device it runs on, so it behaves like part of your Mac, iPad or iPhone, not like a web page in a window.
ii.
Work happens on your device, in standard formats. No account to create, and nothing held hostage in a format only we can read.
iii.
Our users are paid to notice small things. The software should hold itself to the same standard, down to the last hairline.
iv.
Plain descriptions, clear limits, and no claims a tool cannot back up. Measurements are only as good as the drawing and its calibration, and we say so.
04Company
Quirebit Inc.
Independent software publisher.