Comparison

My Lisp vs OCaml

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

OCaml

Learn and practice OCaml programming with an integrated editor and interactive top-level interpreter. This app provides offline functionality and step-by-step learning modules for variables, conditions, and loops, with new content added regularly.

Highlights
  • Integrated OCaml editor
  • Interactive top-level interpreter
  • Offline code execution
  • Step-by-step learning chapters
  • Customizable editor settings
  • Save and open .ml files
Features
Read full description

The all-in-one OCaml bundle for iOS, iPadOS and macOS! Learn the language and practice with a powerful editor and interactive top level available in the app, working offline. CODE - Write OCaml code directly from the app, and execute it with an interactive top level - Save your code in .ml files to open again them later - No need to install additional tools, OCaml is shipped with the app, and works offline - Customize the editor settings to make it yours LEARN - Learn OCaml step by step with chapters about variables, conditions, loops, … - New chapters are added frequently - It’s quick and easy! Don’t wait, start learning and playing with OCaml for free now! Application developed by Nathan Fallet © 2021 Groupe MINASTE

Screenshots

My Lisp4 screens
OCaml3 screens

Verdict

The call

The clearest difference is price: OCaml at Free against My Lisp's $3.99. OCaml also leads on rating (4.6 vs 4.1) and iOS requirement (15.0 vs 18.0). My Lisp's advantage is in-app purchases (none vs 3) and chart position (#87 vs unranked). On review sentiment, ratings volume, update cadence and ads 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

OCaml is free to download; My Lisp costs $3.99 up front. OCaml sells 3 one-off in-app purchases. My Lisp asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

OCaml holds the better App Store score, 4.6 against 4.1. Both are backed by a comparable volume of ratings — 17 and 17 respectively. Written reviews complicate that: 69% of My Lisp's written reviews are positive against 64% of OCaml's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

My Lisp ships an update every 6 weeks, OCaml monthly. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.

Scorecard6 real differences · 5 level
My Lisp versus OCaml: the parameters behind the verdict, then further details
ParameterMy LispOCaml
Price$3.99Free — better
Rating4.1 (17 ratings)4.6 (17 ratings) — better
Positive reviews68.8% of reviews — better64.0% of reviews
Number of ratings1717
Update frequencyEvery 6 weeksMonthly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#87 — better—
DevicesiPhone, iPad, MaciPhone, iPad, iPod, Mac — better
Requires iOS18.015.0 — better
Further details — not scored
Size19 MB38 MB
Age rating4+4+
DeveloperLaurent RodierGroupe MINASTE

Customer experience

My Lisp

All ratings17 ratings
Positive82.4%
Neutral0.0%
Negative17.6%
Written reviews16 reviews
Positive68.8%
Neutral12.5%
Negative18.8%

OCaml

All ratings17 ratings
Positive94.1%
Neutral0.0%
Negative5.9%
Written reviews25 reviews
Positive64.0%
Neutral4.0%
Negative32.0%

In-app purchases

None

My Lisp

No in-app purchases

3 purchases

OCaml

One-time3
  • Donation 1$0.99
  • Donation 2$2.99
  • Donation 3$4.99

Questions

Is My Lisp free?
My Lisp costs $3.99, with no in-app purchases.
Is OCaml free?
OCaml is free to download, with in-app purchases available.
Which has better reviews, My Lisp or OCaml?
OCaml is rated higher. My Lisp averages 4.1 out of 5 from 17 ratings, while OCaml averages 4.6 from 17 ratings.
Do My Lisp or OCaml have ads?
Neither My Lisp nor OCaml shows ads.
Which is updated more often, My Lisp or OCaml?
My Lisp ships an update every 6 weeks, and OCaml monthly. Most recently, My Lisp was updated on September 22, 2026 and OCaml on September 21, 2026.

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