Comparison

Swifty Compiler vs REPL

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

Head to head
About

Swifty Compiler

Write, run, and experiment with Swift code on your mobile device. This app functions as a personal playground for testing algorithms, prototyping ideas, and enhancing coding skills with a variety of editing tools.

Highlights
  • Write and run Swift code
  • Import Swift and Playground files
  • Code completion and error highlighting
  • Code formatting and syntax correction
  • Code snapshots (PNG, JPEG, PDF)
  • Dark and light mode support
  • Unlimited credits (Premium)
Features
Read full description

Write and run Swift code effortlessly, anywhere and anytime. Swifty Compiler is the perfect tool to test algorithms, prototype ideas, or experiment with Swift code on the go. Use it as your personal playground to explore concepts and improve your coding skills. Free Features: • Daily credits⁽¹⁾: 10 credits per day • Import Swift files • Open Playground files and import their Swift files • Share Swift files, Playground files, or text directly to the app • Code Snapshot (PNG, JPEG, HEIC, or PDF) • Adjustable font size and line spacing • Auto-indentation • Code completion suggestions • Auto-closing brackets and quotes • Error highlighting • Bracket and line highlighting • Code block selection • Cursor position indicator • Code snippets • Extra keyboard buttons • Comment/uncomment selection • Markdown comments • Duplicate code • Move line up/down • Indent/Outdent (Shift right/left) • Jump to line or selection • Keyboard shortcuts • Multitasking support on iPad • Dark and light mode support • Share extension support • No ads Premium Features: • Unlimited credits⁽¹⁾ • Share as Swift file • Save Swift files to the Files app (iCloud or local storage) • Auto-save last input • Unlimited Undo/Redo • Code formatting • Add documentation • Syntax correction • Optical Character Recognition (OCR) • Abstract Syntax Tree (AST) • Multiple Swift versions • Font pack • Show invisible characters • Create/Edit custom snippets • Create/Edit custom keyboard buttons • No watermark on code snapshots 1. 1 Credit = 1 Code Execution Feel free to reach us out if have any suggestions or ideas. - Email: taleb.apps@gmail.com - X: @hassantaleb90 - Telegram: @hassantaleb If you enjoy Swifty Compiler, please leave a review to support us!

About

REPL

Features
Read full description

REPL is a native code runner for Python and JavaScript — built for the AI era. When your favorite AI gives you code, where do you test it? REPL lets you paste code directly from AI conversations, run it instantly, and copy the results back. No laptop required. FEATURES - Native Python 3.11 — Real CPython running locally on your device, not a web interpreter - JavaScript Engine — Powered by iOS JavaScriptCore - Persistent State — Variables survive between runs, like a true REPL - Share Sheet — Send code from any app directly to REPL - History — Access your last 50 code runs - Smart Parsing — Automatically extracts code from markdown fences - Offline — Everything runs locally, no internet needed - Dark Mode — Easy on the eyes BUILT FOR AI WORKFLOWS Copy code from ChatGPT, Claude, Gemini, or any AI assistant. Paste into REPL. Tap Run. See results. Copy output back to your conversation. Iterate faster than ever. TECHNICAL DETAILS Python: Full CPython 3.11 interpreter embedded natively JavaScript: Apple's JavaScriptCore engine Storage: Code history saved locally Privacy: No data leaves your device

Screenshots

Swifty Compiler4 screens
REPL3 screens

Verdict

The call

The clearest difference is in-app purchases: REPL at none against Swifty Compiler's 4. Swifty Compiler's advantage is chart position (#45 vs unranked). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Swifty Compiler sells 4 in-app purchases, starting at $4.99 per 7 days. REPL asks for nothing beyond the download.

Scorecard2 real differences · 9 level
Swifty Compiler versus REPL: the parameters behind the verdict, then further details
ParameterSwifty CompilerREPL
PriceFreeFree
Rating4.5 (194 ratings) — better—
Positive reviews84.3% of reviews—
Number of ratings194 — better—
Update frequencyFortnightly—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
Best chart rank#45 — better—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.6
Further details — not scored
Size70 MB22 MB
Age rating4+4+
DeveloperHassan TalebJesus Soledad

Bugs and requests

Swifty Compiler

Reported bugs

10 issues
  • Refund screenshots are not correct
  • Kept loading without doing anything
  • Issues related to JSON parsing
  • Cannot save projects without paying
  • Cannot use Date or Calendar as types
Show 5 more
  • Misleading screenshots about Swift version
  • Cannot overwrite files in iCloud
  • Console does not print anything
  • Limited code execution per day
  • Cannot call a function before it's created

Requested features

18 requests
  • Support for newer Swift versions
  • Ability to import projects online
  • Cache 'premium' pop-up
  • Support multithreading (GCD)
  • Fix console printing bug
Show 13 more
  • Ability to add frameworks
  • Support for SwiftUI
  • Offline mode support
  • Autofill feature
  • Highlighting lines with warnings/errors
  • Show which compiler is used
  • Ability to change Swift version without paying
  • More than one Swift version option
  • Import own fonts
  • Call basic modules like SwiftUI
  • Use input and output as command tool
  • Overwrite existing files in iCloud
  • Korean language version

REPL

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Swifty Compiler

Subscriptions3
  • Premium Weekly Subscription$4.997 Days
  • Premium Monthly Subscription$12.991 Month
  • Premium Yearly Subscription$79.991 Year
One-time1
  • Premium Lifetime$99.00
None

REPL

No in-app purchases

Questions

Is Swifty Compiler free?
Swifty Compiler is free to download, with in-app purchases available.
Is REPL free?
REPL is free to download, with no in-app purchases.
Do Swifty Compiler or REPL have ads?
Neither Swifty Compiler nor REPL shows ads.

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