---
title: Supported Platforms and Browser Policy
updatedAt: 2026-02-16T15:17:04.000Z
---

Fetch the complete documentation index at: https://docs.watchers.io/llms.txt

# Supported Platforms and Browser Policy

Last updated: 16 February 2026

This document outlines the system requirements and browser support policy for the **Watchers Web App**, which is embedded into partner environments using either `<iframe>` or native `WebView` components.

## Scope

Watchers Web App is a real-time, interactive web application. It relies on modern web capabilities including JavaScript execution, storage access, iframe communication, and WebSocket-based streaming. It is designed to function reliably within **constrained container environments**, such as in-app browsers, embedded webviews, and partner-hosted iframes.

## Support Policy

We support **the last 5 stable releases** of the following rendering engines:

* **Chromium** (Blink) — used by Chrome, Edge, Samsung Internet, Xiaomi/Mi Browser, and most Android WebViews
* **WebKit** — used by Safari, all iOS webviews, and in-app browsers
* **Android System WebView** — updated via Google Play Services

### Supported Engine Versions (as of 3 June 2025)

#### Chromium/Blink

| Version | Release Date      |
| ------- | ----------------- |
| 145     | 10 February 2026  |
| 144     | 13 January 2026   |
| 143     | 2 December 2025   |
| 142     | 28 October 2025   |
| 141     | 30 September 2025 |

#### WebKit (Safari/WKWebView)

| Version | Release Date      |
| ------- | ----------------- |
| 26.3    | 11 February 2026  |
| 26.2    | 12 December 2025  |
| 26.1    | 3 November 2025   |
| 26      | 15 September 2025 |
| 18.6    | 30 July 2025      |

We guarantee compatibility with these versions unless otherwise noted due to vendor regressions.

## Platform-Specific Notes

### Android

On Android devices, the Watchers app renders within a Chromium-based WebView. Most OEM browsers (Samsung Internet, Xiaomi Browser, Oppo, Vivo, etc.) also rely on Chromium/Blink internally, even when branded differently.

We support:

* **Android System WebView** version **141 or newer**
* WebViews embedded in partner apps, provided the following features are available:
* JavaScript execution
* Local storage access (cookies, localStorage)
* `allow-scripts` and `allow-same-origin` permissions in iframe configuration
* Unrestricted WebSocket and media API usage

We do **not** support:

* Android WebView versions older than the minimum supported Chromium version listed above (currently 141)
* WebViews that disable `window.postMessage`, block storage APIs, or isolate iframes via CSP/sandboxing

### iOS

Due to platform restrictions, all browsers on iOS (including Safari, Chrome, Firefox) use **WebKit/WKWebView**.

We support:

* **iOS WKWebView** in versions aligned with **Safari 26.0+ (Released September 15, 2025)**

We do **not** support:

* Legacy UIWebView (deprecated as of iOS 13)
* iOS 14 or older

## Known Compatibility Exceptions

We track vendor regressions and browser-specific deviations. Known issues:

* **Chromium 123** introduced stricter privacy sandbox features affecting third-party cookies in iframes
* **Safari 17.1** enforced `SameSite=None` + `Secure` cookie policies, which may block session persistence if iframe is loaded over HTTP

In such cases, workarounds may be deployed, or compatibility may be marked as _best effort only_.

## Graceful Degradation Policy

If a user environment does not meet the supported engine/version requirements:

* The application may fall back to read-only mode
* Real-time features, animations, or storage-based persistence may be disabled
* No SLA is provided for degraded environments

## Deprecation and Notification Policy

We review usage statistics continuously and reserve the right to:

* Remove support for browsers/webviews representing \<2% active monthly users
* Deprecate engine versions with security risks or critical rendering bugs
* Provide 30 days' notice before removing support for a version in active use

## Contact and Feedback

For integration-related technical issues, or to request support for a specific container or webview configuration, please contact your Watchers account representative.