The Developer & QA Browser

AppSwap

Test Faster. Ship Confidently.

A specialized browser built for developers and QA engineers to test web applications across multiple versions, environments, and configurations simultaneously.

Download AppSwap
80%
Time Saved
10x
Faster Testing
90%
Less Setup

The Problem We Solve

Developers and QA teams waste 40-60% of testing time on environment setup, version switching, and manual reproduction

Before AppSwap

  • 15-30 minutes per bug (4 environments × manual reproduction)
  • Hours testing time-based features (changing system clock)
  • 20-40 minutes testing timezones (breaking dev environment)

With AppSwap

  • 3-5 minutes per bug (80% time saved)
  • Seconds testing time-based features (10x time multiplier)
  • 90% reduction in timezone testing (no system changes)

Powerful Features

Everything you need to test web applications faster and more efficiently

Multi-Version Support

Test multiple versions simultaneously - NPM packages, GitHub releases, web proxies, embedded apps, and local dev servers.

  • Production
  • Staging
  • Feature branches
  • Local dev

Side-by-Side Split View

Compare versions in real-time with synchronized interactions. Click once, test both versions instantly.

  • 2-pane layouts
  • Action sync
  • Smart scroll sync
  • Visual indicators

Time Manipulation

Test time-sensitive features without waiting. Speed up time 0.1x to 100x and override dates per pane.

  • Date/time override
  • Time multiplier
  • Animation testing
  • No system changes

Location Emulation

Test location-based features instantly with pre-configured locations or custom coordinates.

  • Pre-configured cities
  • Custom locations
  • One-click switching
  • GPS injection

Timezone Testing

Test timezone-sensitive features without breaking your environment. Per-pane timezone override with no system changes.

  • Multi-timezone testing
  • Date filter testing
  • Scheduling features
  • No IDE disruption

Real-World Use Cases

See how AppSwap transforms everyday testing workflows

Bug Reproduction

Compare bug behavior across production, staging, and feature branches side-by-side. Reproduce issues 80% faster.

Animation Testing

Watch a 1-minute animation in 6 seconds with 10x time multiplier. Test all timing-sensitive features instantly.

Timezone Scenarios

Verify 'Today's Orders' displays correctly across NYC (EST) and Tokyo (JST) simultaneously without breaking your environment.

Regression Testing

Ensure new features don't break existing functionality by testing multiple versions with synchronized interactions.

Ready to Transform Your Testing?

Join thousands of developers and QA engineers saving 80% of their testing time with AppSwap.

Download AppSwap Now

Available for macOS, Windows, and Linux • No credit card required