REPL vs JSON, JWT & Dev Tools
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
REPL
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REPL is a native code runner for Python and JavaScript โ 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 โ Real CPython running locally on your device, not a web interpreter - JavaScript Engine โ Powered by iOS JavaScriptCore - Persistent State โ Variables survive between runs, like a true REPL - Share Sheet โ Send code from any app directly to REPL - History โ Access your last 50 code runs - Smart Parsing โ Automatically extracts code from markdown fences - Offline โ Everything runs locally, no internet needed - Dark Mode โ 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
JSON, JWT & Dev Tools
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Your clipboard, decoded. You're away from your laptop and a JWT shows up in an alert log. A JSON blob lands in Slack. A config diff needs checking. The usual answer is some website full of ads โ which means pasting a production token into a stranger's server. Declip does all of it on your device. No account. No sign-in. PASTE & DETECT One tap. Declip reads the clipboard, works out what it's looking at โ JSON, JWT, timestamp, Base64, color, URL โ and opens the right tool with the result already on screen. No menu diving, no picking the format yourself. EIGHT TOOLS โข JSON โ pretty-print, minify and validate, with the exact offset of a parse error โข JWT โ decode header and payload, see exp / iat / nbf and whether the token is already expired โข Base64 & URL โ encode or decode, direction detected automatically, base64url supported โข Unix timestamp โ epoch to date and back, seconds and milliseconds detected, full timezone list โข UUID โ generate v4 or v7, up to 100 at once โข Hash โ MD5, SHA-1, SHA-256 and SHA-512 in a single pass โข Color โ HEX, RGB and HSL, with ready-to-paste Flutter, SwiftUI and Compose code โข Text diff โ line-by-line comparison of two versions WORKS WHERE YOU WORK โข Share extension โ select text in any app, hit Share, pick Declip. It parses right inside the sheet; no app switch needed. PRIVATE, ACTUALLY Every tool runs entirely on device. Tool input and output never leave your phone โ there is no server to send them to. The clipboard is only ever read when you tap to read it, never in the background. No advertising identifier, no tracking prompt, no account linkage. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: JSON, JWT & Dev Tools at 15.0 against REPL's 17.6. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | REPL | JSON, JWT & Dev Tools |
|---|---|---|
| Price | Free | Free |
| Update frequency | โ | Weekly |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad, iPod โ better |
| Requires iOS | 17.6 | 15.0 โ better |
| Further details โ not scored | ||
| Size | 22 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Jesus Soledad | Petrichka Yaroslav |
In-app purchases
REPL
No in-app purchases
JSON, JWT & Dev Tools
No in-app purchases
Questions
Is REPL free?
Is JSON, JWT & Dev Tools free?
Do REPL or JSON, JWT & Dev Tools have ads?
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