Calling all early-personal-computing fans, remember typing Basic programs into your home computer? HotPaw Basic recreates the retro-experience of a text-mode Basic interpreter, and it runs right on your iPhone or iPad.

You can also use HotPaw Basic as a programmable calculator, or for displaying simple line graphics.

The HotPaw Basic interpreter supports the minimal Basic language, including:
let if then else endif dim data read restore
for to step next while wend goto gosub return
? print input open close end stop mat
run new list del save load dir cls rem
int() abs() sgn() rnd()
sqr() exp() log() log10() sin() cos() tan() atn()
len() val() asc() str$() chr$() hex$() mid$()
timer() date$ time$ pi
+ - * / mod ^ = and or xor not

Also includes new command and functions to support line graphics, Morse Code audio, FFT analysis, GPS location, MQTT and BTLE communications.

Line numbers are required. Type in the text of your program and type "run" to run them.

See: for a more complete description of the Basic language syntax, commands and functions which this Basic interpreter supports.

What's New

Version 1.7.7

Updated for iOS 11 and the iPhone X.
Improved support for Larger Text (as set in Accessibility Settings).
Basic programs can now be downloaded to HotPaw Basic using iTunes File Sharing, or via the iOS 11 Files app.
The graphics drawing area is now limited to 80% of full screen.
This update includes bug fixes for entering quote marks, and for an occasionally missing "Stop" button to break program execution.

Ratings and Reviews



Thanks so much for providing this! I've been looking for a BASIC that wasn't stripped down, be mobile for my iPhone, and was delighted this is it! I'm an amateur astronomer and I was using an awkward spreadsheet out in the field, which was cumbersome/very time-consuming to keep updated. Now I've written a program to handle it automatically. I spend more time preparing for my next viewing run instead of missing it! Thanks again!

There's no Break!


How do you force a program to terminate short of exiting the app?

Very handy for repetitive, recursive or involved calculations


I've used Basic for complicated calculations since the days of the Apple II+. This implementation is very useful, as it includes most functions and operations that I need. Single precision is ok and I suppose double would be too much to hope for (I'll use Chipmunk Basic for that on my Mac). The graphics features are an added bonus. I am very happy that the Ready prompt was modified to be less intrusive. It's very cool to have a straightforward programming language on the iPad. While waiting at the car dealer I was running a probabilistic simulation. How cool (or geeky) is that?


Ronald Nicholson
2.3 MB
Requires iOS 9.3 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 HotPaw Productions


  • Family Sharing

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

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