Comparison

My Lisp vs Learn Python (Step

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Local Lisp interpreter
  • Integrated editor
  • Core and mathematical operators
  • Advanced mathematics functions
  • Symbolic derivation module
  • Library and example files
  • User and reference manuals
Features
Read full description

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)))))

About

Learn Python (Step

Features
Read full description

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

Screenshots

My Lisp4 screens
Learn Python (Step4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 8 level
My Lisp versus Learn Python (Step: the parameters behind the verdict, then further details
ParameterMy LispLearn Python (Step
Price$3.99 — better$4.99
Rating4.1 (17 ratings) — better—
Positive reviews68.8% of reviews—
Number of ratings17 — better—
Update frequencyEvery 6 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#87 — better—
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS18.015 — better
Further details — not scored
Size19 MB21 MB
Age rating4+4+
DeveloperLaurent RodierPaulo Narra

In-app purchases

None

My Lisp

No in-app purchases

None

Learn Python (Step

No in-app purchases

Questions

Is My Lisp free?
My Lisp costs $3.99, with no in-app purchases.
Is Learn Python (Step free?
Learn Python (Step costs $4.99, with no in-app purchases.
Do My Lisp or Learn Python (Step have ads?
Neither My Lisp nor Learn Python (Step shows ads.
Which is updated more often, My Lisp or Learn Python (Step?
My Lisp ships an update every 6 weeks, and Learn Python (Step every 3 weeks. Most recently, My Lisp was updated on October 12, 2026 and Learn Python (Step on September 30, 2026.

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