# LispPad Go — user reviews > 26 indexed App Store user reviews of LispPad Go by Matthias Zenger, rated 4.90/5 from 36 ratings. - Source: https://appshunter.io/ios/app/lisppad-go/id1565747728/reviews - App overview in markdown: https://appshunter.io/ios/app/lisppad-go/id1565747728.md - Rating breakdown: 5★ 34 · 4★ 2 · 3★ 0 · 2★ 0 · 1★ 0 ## Newest reviews (11 of 26) ### 5/5 — The best *2024-03-14* In general, very good. There is a noticeable bug when in long session trying to “Copy to Input” though. ### 5/5 — Do you want to do the *2023-06-21* Can I come visit your ### 5/5 — Great App *2023-02-26, version 1.3.4* This app is great and easy to use. I’ve been learning SICP with this, it’s so convenient! Thank you developer! ### 5/5 — Very Good! Thank You! *2023-01-23, version 1.3.3* 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😆 ### 5/5 — I have been waiting for this! *2022-07-12, version 1.3.0* 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! ### 5/5 — A great Scheme implementation *2022-05-23, version 1.3.0* This is a beautiful programming environment. The user interface is clean and easy to use. Documentation is clear and extensive. There are scads of libraries available. ### 5/5 — Excellent *2021-10-27, version 1.2.0* Wow! It’s cool ### 5/5 — Bravo Indeed *2021-10-14, version 1.2.0* The previous reviewer did a great job, so I can’t add anything more. As William Byrd said, Scheme is the most important Lisp, and now I have R7RS Scheme in my phone’s home page! ### 5/5 — Powerful and fast Scheme interpreter on iOS *2021-07-20, version 1.1.1* LispPad Go is the best computer language interpreters I have come across on the iPad over the years. Not only is the GUI well-designed, which make programming a breeze (eg., you can easily comment and uncomment several lines of code using a contextual menu), but the interpreter is fast compared with the likes of Pythonista, Continuous, Playgrounds, and even Mobile C, and the R7RS Scheme implementation is quite powerful (macros are amazing), after some getting used to, if you have never programmed in a Lisp dialect before. Furthermore, I find R7RS Scheme a lot more fun and a lot less painful than Haskell (no monads!) Kudos to Matthias Zenger for this amazing development application. ### 5/5 — Excellent *2021-07-05, version 1.1.1* Behaves just the way you would expect a modern Scheme implementation and a modern iOS app to behave; and also includes excellent libraries for things like creating and working with images. One of the very best programming apps available on iOS. ### 5/5 — Use with SICP, perfect *2021-06-15, version 1.1.0* I can cut & paste on my IPad running iPad OS 14.6, between a .PDF of SICP, and execute the examples perfectly in this excellent app. GUI takes a little getting used to, no big deal though. Fun to play around with! Bravo to the developer! ## Most critical reviews (10 lowest-rated) ### 3/5 — Good app but crashes frequently *2022-12-09* 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. **Developer response:** 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. ### 4/5 — Can't *2025-08-03, version 2.1* 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. ### 4/5 — arrow keys needed! *2025-07-06, version 2.1* 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. ### 4/5 — Some bug fixes *2025-05-17* are needed. And probably bug-reporter needs to be added. Except of that cool app, interesting one. And it works offline. ### 4/5 — A curious crash *2022-11-20* 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. **Developer response:** Üsér, thanks a lot for reporting this bug. This issue has been fixed with the 1.3.3 release. ### 5/5 — Very good! *2026-06-08* 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! ### 5/5 — Excellent *2025-09-04, version 2.1* 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... ### 5/5 — Great job *2025-08-23* Thank you for this great gift! ### 5/5 — My Favorite App *2025-07-20, version 2.1* 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. ### 5/5 — Just works *2025-05-30, version 2.1* 5 ## Most praised reviews (5 highest-rated) ### 5/5 — Get it, you won’t regret it! *2024-09-14, version 2.0.1* R7RS Scheme always with you wherever you go (assuming you take your phone with you everywhere of course 😉) ### 5/5 — Very good app for learning programming and experimentation *2024-08-28, version 2.0.1* 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. ### 5/5 — A fully-fledged R7RS Scheme environment: what's not to like? *2024-07-20, version 2.0.1* 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. ### 5/5 — An excellent program with a weird UI *2024-07-16, version 2.0.1* 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. ### 5/5 — Sweet *2024-03-16, version 2.0.1* Wish there was a Clojure environment like this on iPad. Never mind… this’ll do for getting my Lisp fix while on the go :) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*