Very good!
I love Scheme, and finally there is a Scheme Interpreter on iOS.
The only thing I‘d like to have is a „modern“, i.e. iOS 26-styled virtual keyboard instead of the „legacy“ one (but that‘s not a major problem, so still 5 stars).
Thanks!
The only thing I‘d like to have is a „modern“, i.e. iOS 26-styled virtual keyboard instead of the „legacy“ one (but that‘s not a major problem, so still 5 stars).
Thanks!
Excellent
This is excellent software!
For now it's the best way I found to program in Lisp on my iPad...
It's free, open source, documented, based on standards, the UI is simple but user friendly...
For now it's the best way I found to program in Lisp on my iPad...
It's free, open source, documented, based on standards, the UI is simple but user friendly...
Great job
Thank you for this great gift!
Can't
Can't delete file using the organise feature. Delete it it's write back at ya.
Seems to be undocumented feature of mirroring interpreter content from editor. Can be deleted by using the apple files app. Which is poorly at best, but better than nada.
Seems to be undocumented feature of mirroring interpreter content from editor. Can be deleted by using the apple files app. Which is poorly at best, but better than nada.
Response from developer
Thanks a lot for the feedback. This should be fixed now in the new 2.2 release.
My Favorite App
This is, genuinely, my favorite app in the App Store. I'm moving to GrapheneOS soon and will be sad to be without it. (I realize it won't happen, but I would pay hundreds of dollars for an Android version. Seriously.)
Thank you for all of your hard work in putting this together! It's so good.
Thank you for all of your hard work in putting this together! It's so good.
arrow keys needed!
Amazing app for practicing scheme on your phone! I appreciate it and recommend it!
The only one thing that I would ask developer: please, if it’s possible and not too hard, add arrow keys to virtual keyboard, at least left and right ones.
The only one thing that I would ask developer: please, if it’s possible and not too hard, add arrow keys to virtual keyboard, at least left and right ones.
Response from developer
Thanks a lot for your feedback. As of version 2.2.1, there‘s a second set of keys on the virtual keyboard that includes cursor navigation keys.
Just works
5
Some bug fixes
are needed. And probably bug-reporter needs to be added. Except of that cool app, interesting one. And it works offline.
Get it, you won’t regret it!
R7RS Scheme always with you wherever you go (assuming you take your phone with you everywhere of course 😉)
Very good app for learning programming and experimentation
Free and has version for the computer with sync. Ships with multiple libraries from scheme implementation used in the app. All documentation is available in the app in searchable menus or in PDF reference.
The features that could be useful but are currently missing:
- autocomplete;
- search for variables and functions from libraries not yet imported into environment;
- ability to export PDF language and library reference that are already stored within the app into files to use in reader of choice.
The features that could be useful but are currently missing:
- autocomplete;
- search for variables and functions from libraries not yet imported into environment;
- ability to export PDF language and library reference that are already stored within the app into files to use in reader of choice.
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A fully-fledged R7RS Scheme environment: what's not to like?
I mean, really, this is a fantastic thing: a Scheme with a competent editor, plenty of libraries. On an iPad. Oh, and the same environment also on a Mac, and you can share programs trivially.
The future is, in fact, here.
The future is, in fact, here.
An excellent program with a weird UI
I love using this to code on my iPad, despite the somewhat weird UI. As a longtime Lisp programmer, I sometimes trip over the differences between Lisp and Scheme, but overall this is a fantastic app. Some nice-to-haves that would make it even better are a way to make standalone applications (or, on the Mac, command line utilities), and hyperlinking between the code and documentation. Also on the iPad, resizable and tile-able windows for the various tools would be great. But overall, when I’m coding on my iPad, I find myself reaching for this more often than I reach for an SSH connection to my Linux VPS.
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Sweet
Wish there was a Clojure environment like this on iPad. Never mind… this’ll do for getting my Lisp fix while on the go :)
The best
In general, very good. There is a noticeable bug when in long session trying to “Copy to Input” though.
Do you want to do the
Can I come visit your
Great App
This app is great and easy to use. I’ve been learning SICP with this, it’s so convenient! Thank you developer!
Very Good! Thank You!
A really nice little environment that works perfectly out of the box. It has good libraries, a pretty interface. It’s one of the easiest pick up and play Lisp/Scheme apps out there! Just grab a pdf of SICP 🧙♂️ and go have fun with LispPad😆
Good app but crashes frequently
Very enjoyable editing experience. High quality scheme implementation.
However the interpreter often crashes with recursive functions. Probably stack overflow, but this should not crash the entire app.
Especially annoying because the editor has no auto-save. So a lot of work can be lost if you don’t manually save frequently.
However the interpreter often crashes with recursive functions. Probably stack overflow, but this should not crash the entire app.
Especially annoying because the editor has no auto-save. So a lot of work can be lost if you don’t manually save frequently.
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Response from developer
Thanks for your feedback! You were guessing right and it was possible for non-tail recursive functions to overflow the stack (and crash the whole app). This has been fixed with version 1.3.3. The editor supports auto-save but requires that the content is first saved to a file. With version 1.3.4, also this has been fixed and auto-save now works universally also for "unsaved" editor buffers.
A curious crash
If I open the app and enter the following into the interpreter:
((((((if (null? ()) identity identity))))))
The app crashes.
If I remove some outer parentheses, the interpreter shows an error instead.
Awesome app otherwise.
((((((if (null? ()) identity identity))))))
The app crashes.
If I remove some outer parentheses, the interpreter shows an error instead.
Awesome app otherwise.
Response from developer
Üsér, thanks a lot for reporting this bug. This issue has been fixed with the 1.3.3 release.
I have been waiting for this!
Finally LISP (Scheme) on an iPad with a first class app! Thank you Matthias!
I’m an engineer and this allowed me to create my own Beta Function Synthetic Sample Generator. I am playing around with statistics, retirement, and Engineering Economy. I crashed the environment a few times but that’s ok, it was fun. I was able to recover and press on. I have the code that crashes the system if the developer wants it. The sampler will generate 200 samples fine, but chokes on 1000.
Thanks again!
I’m an engineer and this allowed me to create my own Beta Function Synthetic Sample Generator. I am playing around with statistics, retirement, and Engineering Economy. I crashed the environment a few times but that’s ok, it was fun. I was able to recover and press on. I have the code that crashes the system if the developer wants it. The sampler will generate 200 samples fine, but chokes on 1000.
Thanks again!
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