Updraw is the 2D CAD tool you've always wanted in your pocket! It allows you to draw familiar shapes and add constraints to solve for unknown distances and angles.


• Intuitive interface designed specifically for touch screens
• Familiar 2D geometry: points, lines, circles, arcs, and cubic splines
• Global constraint solver calculations: distance, diameter, radius, coincident, parallel, perpendicular, angle, congruence, intersection, midpoint, symmetric, and tangent (line to arc, line to spline, circles and arcs)
• Interactive and manual solver modes help to resolve constraint ambiguities
• PDF and PNG image export

What’s New

Version 2.1.1

• Fixed label offset in exported documents
• Updated hardware keyboard shortcuts
• Updated localizations

Ratings and Reviews

3.4 out of 5
74 Ratings

74 Ratings

jaycolby83 ,

Needs a few things.

I would like it if I make a line I could delete it. I like the interface and design, but at this time I feel I wasted some money. It’s hard to use your finger and get the lines to match up. To be able to delete a line that is a mistake would be a huge help. Please update this and I will raise my 3 stars to five. Also the ability to put in measurements to scale would be a huge plus.

ndtjosh ,

Really a good tool!

It has small learning curve, but if your one the users in these reviews that say this app isn’t worth $5, and are crying about the lack of tutorials....then you prolly had a room full of participation medals as a kid. This is an incredibly powerful tool, that functions properly on a phone or iPad....the time you put into learning this app is well worth it

amoose136 ,

Decent to quickly test feasibility of ideas

Unfortunately there is no vector export (dxf or svg) which makes it difficult to do anything with a drawing. Additionally there is no proper gesture support which means using the pencil is the same as a finger. Simple gestures like double tapping with two fingers to undo are not supported. This app is also the cheapest app I’ve found to support constraints and the constraint system seems powerful enough.


Ben Blevins
2 MB

Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Finnish, French, German, Japanese, Korean, Simplified Chinese, Traditional Chinese, Welsh

Age Rating
Rated 4+
© 2017 Ben Blevins


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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