My Lisp vs IconGPT
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)))))
IconGPT
Generate professional app icons quickly using AI. This tool offers optimized prompts and real-time previews to help independent developers create visually appealing icons without design experience. Save icons in high resolution for immediate use.
- AI-generated app icons
- Optimized prompt enhancement
- Real-time home screen preview
- Icon import and preview
- Save icons in 1024x1024 resolution
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Create App Icons with a Single Prompt! We understand the needs of independent developers and aim to provide you with a simple, efficient solution for generating app icons, so you can focus on your app. Whether or not you have design skills, our AI technology helps you create professional, visually appealing icons. Key Features: • AI-Generated Icons: Use advanced AI to quickly generate unique app icons and solve design challenges. • Optimized Prompts: Simply enter a description, and AI will enhance it to create a professional-quality prompt. • Real-Time Home Screen Preview: Instantly preview your icons to ensure they perfectly match your app’s style. • Icon Import & Preview Tool: Import icons via web browser or gallery and preview them in real time. • Save to Gallery: Save generated icons in 1024x1024 resolution, ready to use. Download IconGPT to simplify design and give your app a professional touch!
Screenshots
Verdict
The clearest difference is price: IconGPT at Free against My Lisp's $3.99. IconGPT also leads on review sentiment (100% vs 69%) and update cadence (every 3 days vs every 6 weeks). My Lisp's advantage is in-app purchases (none vs 2) and ratings volume (18 vs 1). On rating, ads, device support and iOS requirement 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
IconGPT is free to download; My Lisp costs $3.99 up front. IconGPT sells 2 one-off in-app purchases. My Lisp asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.1 for My Lisp against 4.0 for IconGPT. That said, the two scores are not equally well evidenced: My Lisp has 18 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 69% of My Lisp's written reviews are positive against 100% of IconGPT's.
My Lisp ships an update every 6 weeks, IconGPT every 3 days. The most recent releases landed on November 1, 2026 and October 9, 2026 respectively.
| Parameter | My Lisp | IconGPT |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.1 (18 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 68.8% of reviews | 100.0% of reviews — better |
| Number of ratings | 18 — better | 1 |
| Update frequency | Every 6 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #85 — better | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Laurent Rodier | 旋炜 李 |
Customer experience
My Lisp
IconGPT
In-app purchases
My Lisp
No in-app purchases
IconGPT
- IconGPT Pro Week$1.99
- IconGPT Pro Month$7.99









