Web Sync vs JWT Lens
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Web Sync
Transform your iPhone or iPad into a dual-display web renderer. Display web pages on your device and an external screen, with full remote control over content and display settings. Ideal for digital signage, IoT dashboards, and interactive kiosks.
- Dual-display web rendering
- Remote control of content
- Mirrored or independent display modes
- Kiosk Mode
- Web inspector and debugging
- Remote screenshot capture
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Turn your iPhone or iPad into a dual-display web renderer with full remote control capabilities. Web Sync lets you display web pages on both your device and an external display (HDMI, AirPlay, or AV adapter), either mirrored or independent. Perfect for digital signage, IoT dashboards, and interactive kiosks, it gives you complete control over what’s shown on each screen from anywhere. Key Features • Display separate web pages on your device and an external screen • Switch between mirrored and independent display modes • Control remotely through WebHooks or the Remote Control Portal • Change URLs, refresh pages, and toggle auto-refresh • Enable web inspector and debug your web pages and dashboards • Adjust brightness, sound, and UI visibility • Send speech messages and capture screenshots remotely • Enable Kiosk Mode for locked-down interactive displays Use Cases • Digital Signage: Show menus, announcements, or live dashboards on external monitors and update them remotely. • IoT Dashboards: Display smart home or system metrics on a dedicated screen with auto-refresh intervals. • Interactive Kiosks: Use your iPad as a control surface and show related content on an external display, for hotels, events, or information desks. Privacy First Web Sync collects no personal information. The only data ever transmitted consists of screenshots of web displays, and only when you trigger the screenshot function from the Remote Control Portal. These images are used solely to display back to you. Local Control You can use Web Sync entirely on your device without any remote connection. Configure URLs, refresh pages, switch modes, and more, all locally from the app’s Settings. Kiosk Mode and remote control require a one-time in-app purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://justshare.me/web-sync/privacy/
JWT Lens
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JWT Lens is a fast, private JSON Web Token decoder and verifier for developers — a Safari extension that works entirely on your device. Tap the toolbar icon, paste a token (or grab the text you've selected on the page), and instantly see: • Pretty-printed, color-coded Header and Payload • Human-readable timestamps — exp, iat and nbf shown in your local time with relative phrasing ("expires in 59 minutes") • An at-a-glance expiry badge: valid, expired, or not yet valid • Plain-English descriptions of standard claims (iss, sub, aud, and more) Need to check a signature? JWT Lens verifies HS256/384/512, RS256/384/512, PS256/384/512 and ES256/384/512 using a secret or PEM public key you provide — all computed locally with the system's WebCrypto, never sent anywhere. Privacy by design: • No network requests — ever • No analytics, no tracking, no accounts • Nothing is stored: tokens and keys live only in the popup while you use it Whether you're debugging OAuth / OIDC flows, inspecting a bearer token, or learning how JWTs work, JWT Lens keeps it quick, clear, and completely on-device. Universal app: works in Safari on macOS, iOS and iPadOS.
Screenshots
Verdict
The clearest difference is in-app purchases: JWT Lens at none against Web Sync's 1. 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
Both are free to download. Web Sync sells 1 one-off in-app purchase. JWT Lens asks for nothing beyond the download.
| Parameter | Web Sync | JWT Lens |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 10 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | Erfan Reed | Masaya Kontani |
In-app purchases
Web Sync
- Remote Control$2.99
JWT Lens
No in-app purchases









