My Lisp vs Learn Python (Step
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
My Lisp
A comprehensive Lisp programming environment for iOS and macOS devices. It offers a local interpreter, editor, and extensive libraries for learning and developing Lisp programs, including advanced mathematical functions and symbolic derivation.
- Local Lisp interpreter
- Integrated editor
- Core and mathematical operators
- Advanced mathematics functions
- Symbolic derivation module
- Library and example files
- User and reference manuals
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My Lisp is a complete and universal Lisp environment running directly on the iPhone, iPad, and Mac. This interpreter is true to the original John McCarthy Lisp implementation with the fundamental 7 operators quote, atom, eq, car, cdr, cons, cond, along with lambda and label. My Lisp also contains core and mathematical operators borrowed from other Lisp dialects (Le Lisp, Lisp 1.5, MacLisp, Common Lisp and Scheme to name a few) to make it easy to learn, program, and most importantly, enjoy Lisp. It also features built-in functions for advanced mathematics, including complex numbers and numerical analysis (roots and zeros finder, integral approximation). The complete description of the fundamental, core, and built-in functions is available using a set of library functions completely written in My Lisp. My Lisp offers an interpreter and an editor, all working on the iPhone, iPad, and Mac, and most importantly, without requiring any server connection, that is, the interpreter is executing locally on the iPhone, iPad or Mac My Lisp is installed on. Library and example files contain the source code of classical functions and problems solved by My Lisp and may be used as reference to learn Lisp and develop other programs. They include classical puzzles (hanoi and n-queens), basic mathematical functions (gcd, lcm, factorial, fibonacci, prime?), and the historical apply, mapcar and maplist functions. The Lambda Calculus example file contains various functions related to Lambda Calculus and Combinators, with alpha-conversion, beta-reduction, de Bruijn notations, etc. As a special note, the example file Symbolic Derivation contains a complete yet extensible symbolic derivation module allowing to compute the formal derivation of virtually any symbolic function expressed as a Lisp expression. A user manual and a reference manual are available from within the application but also on My Lisp web site (https://lisp.lsrodier.net) and in Apple Books. The complete source code of the library and example files is part of My Lisp. Last but not least, this overview couldn’t end without a sample definition of the notorious REPL function: (define (REPL eval_me) (REPL (println (eval (read)))))
Learn Python (Step
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Want to learn Python the easy way? Do you want to remember the syntax and result of an statement? Developed so that students or teachers can easily learn the Python language More than 500 instructions/methods/functions 380+ exercises, which you can copy to your IDE and test and modify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . For each instruction is presented: a) A detailed description with different implementations and rules b) The syntax with all the various options c) Four examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The application covers: 01 - Installation of an IDE 02 - Introduction to Python (Basic Commands) // 8 topics 03 - Mathematical Operators // 5 topics 04 - Writing (Print) // 7 topics 05 - Reading (Input) // 2 topics 06 - Conditional Structures // 6 topics 07 - Repetitive Structures // 8 topics 08 - Functions // 5 topics 09 - Numbers Manipulation // 23 topics 10 - String Manipulation // 12 topics 11 - Date Manipulation // 13 topics 12 - Lists // 9 topics 13 - Tuples // 8 topics 14 - Sets // 7 topics 15 - Dictionaries // 8 topics 16 - Error Handling // 5 topics 17 - Regular Expressions // 2 topics 18 - Lambda Function 19 - Modules // 2 topics 20 - Threadings // 3 topics
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Verdict
The clearest difference is chart position: My Lisp at #87 against Learn Python (Step's unranked. My Lisp also leads on price ($3.99 vs $4.99). Learn Python (Step's advantage is iOS requirement (15 vs 18.0). On update cadence, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
My Lisp costs $3.99 and Learn Python (Step $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
My Lisp ships an update every 6 weeks, Learn Python (Step every 3 weeks. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.
| Parameter | My Lisp | Learn Python (Step |
|---|---|---|
| Price | $3.99 — better | $4.99 |
| Rating | 4.1 (17 ratings) — better | — |
| Positive reviews | 68.8% of reviews | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #87 — better | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPod |
| Requires iOS | 18.0 | 15 — better |
| Further details — not scored | ||
| Size | 19 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Laurent Rodier | Paulo Narra |
In-app purchases
My Lisp
No in-app purchases
Learn Python (Step
No in-app purchases









