RETRO FORTH vs OCaml
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RETRO FORTH
A compact and adaptable concatenative programming language designed for ease of learning and customization. It features a code editor, interactive listener, and support for Gopher servers, allowing for flexible development.
- Concatenative programming language
- Code editor with Markdown subset
- Literate programming style
- Interactive listener interface
- Gopher server data fetching
- File manager
- Documentation browser
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RETRO FORTH is a concatenative programming language with roots in Forth. Designed to be compact, learnable, and easy to adapt to specific needs, it has been developed and refined through continual use by a small community over more than a decade. Forth is a stack based programming language created in the late 1960's by Chuck Moore. Over the intervening decades it has evolved through use, with many dialects along the way. The Retro dialect was created in the late 1990's, and has been continually developed and supported for over 15 years. It is a structured, imperative stack-based language with modern facilities including quotations and reflection. It features: - latest version of the RETRO language - a code editor using Markdown subset - literate programming style - code is extracted from fenced blocks in Markdown source allowing easy mixing of code and commentary - allows use of unicode & emoji in source & commentary - interactive listener interface for quick interactions - simple console output and text input - editor provides quick access to numbers and symbols - support for fetching textual data from Gopher servers - file manager - documentation browser It also includes documentation and several optional examples.
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.
- Integrated OCaml editor
- Interactive top-level interpreter
- Offline code execution
- Step-by-step learning chapters
- Customizable editor settings
- Save and open .ml files
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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
Verdict
The clearest difference is in-app purchases: RETRO FORTH at none against OCaml's 3. RETRO FORTH also leads on iOS requirement (12.4 vs 15.0). OCaml's advantage is review sentiment (64% vs 33%) and ratings volume (17 vs 5). On price, rating, 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
Both are free to download. OCaml sells 3 one-off in-app purchases. RETRO FORTH asks for nothing beyond the download.
OCaml holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 5 and 17 respectively. Written reviews point the same way: 33% of RETRO FORTH's written reviews are positive against 64% of OCaml's.
Both ship on a similar rhythm, roughly monthly. Both last shipped on October 16, 2026.
| Parameter | RETRO FORTH | OCaml |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (5 ratings) | 4.6 (17 ratings) — better |
| Positive reviews | 33.3% of reviews | 64.0% of reviews — better |
| Number of ratings | 5 | 17 — better |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 12.4 — better | 15.0 |
| Further details — not scored | ||
| Size | 4 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Charles Childers | Groupe MINASTE |
Customer experience
RETRO FORTH
OCaml
In-app purchases
RETRO FORTH
No in-app purchases
OCaml
- Donation 1$0.99
- Donation 2$2.99
- Donation 3$4.99








