| What it does | Free online reaction time test that measures your reflex speed in milliseconds
| 2026 paycheck estimates with line-by-line tax breakdowns for every state
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Reaction time measured in milliseconds
- Sessions of 5, 10 or 20 rounds
- Best and average score tracking
- Percentile comparison with online-test benchmarks
- Shareable score card and friend challenge link
- Light and dark mode
- Works on mobile, tablet and desktop
- No registration or download required
- Random delay prevents anticipation
| - Salary and hourly paycheck calculator for all 50 states plus DC
- Line-by-line tax breakdown with sources cited from IRS and state tables
- W-4 step-by-step configuration with credits and allowances
- Overtime, tips, bonuses, and pre-tax deduction inputs
- Local tax calculations for NYC, Yonkers, and Philadelphia
- Pay stub verification and comparison tools
- Comparison of job offers after tax
- Take-home pay map by state
- Guides on tax topics and paycheck literacy
- 43 published test cases verifying calculator accuracy
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| What makes it different | - No sign-up, download, or account required
- Does not collect or store personal data
- Sub-millisecond timer precision using browser performance API
- Benchmarks against pro gamers, trained athletes, and average adults
- Fast and clean interface without ads
| - Cites specific IRS and state tax tables for every line, verified October 9, 2026
- Line-by-line breakdown shows exactly how each tax is calculated
- Handles complex scenarios including two jobs, W-4 Step 2, multiple employers, and local taxes
- Results can be shared without exposing personal data in the URL
- Clear guidance on limitations: estimates, not tax or payroll advice
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | Not checked yet ▼ −2 (down) since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 12 | 0 |
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| Referring domains (Majestic) | 3 | 0 |
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VoltReflex
PaycheckZip.com