For Graduate ResearchersSPSS-quality survey analysis.
SPSS-quality survey analysis.
No $5,000 license required.
Krosstabs runs raking weights, Welch t‑tests, and chi-square significance testing directly in your browser. Your thesis data never leaves your machine. No IT approval, no department license, no cloud upload.
Free Sandbox tier — 5,000 rows, no time limit
What you can do in the free tier
Raking Weights
Balance your sample to Census or quota targets using iterative proportional fitting.
Significance Testing
Welch t-test and chi-square across any column split. Output matches SPSS 29.
Data Cleaning
Flag speeders, straight-liners, and open-end gibberish before you weight.
Export Tables
Download significance-flagged banner tables as Excel or CSV for your thesis appendix.
How it compares
| Krosstabs (free) | SPSS Student | |
|---|---|---|
| Cost | $0 / month | $54 / month |
| Raking weights | ✓ | ✓ |
| Welch t-test | ✓ | ✓ |
| Chi-square | ✓ | ✓ |
| Runs in browser | ✓ | ✗ (Windows/Mac install) |
| Data leaves your machine | ✗ (zero-upload) | ✓ (if cloud licence) |
| IT approval needed | ✗ | ✓ (institutional licence) |
| Row limit | 5,000 | Unlimited (paid) |
Common questions
Can my supervisor verify the results?
Yes. Krosstabs exposes the exact formula used for each test (raking IPF, Welch t-test with Yates' correction). The "Know the Math" panel in each tool shows the calculation step-by-step, benchmarked against SPSS 29.
Is there a row limit for the free tier?
The free Sandbox tier supports up to 5,000 rows. Most academic surveys run between 200–2,000 respondents, so you'll rarely hit the limit. Need more? Standard is $69/month.
My data includes PII. Is it safe?
Your data never leaves your browser. Krosstabs runs all computation in a Web Worker on your device. We have no server-side access to your respondent rows — making it safe for IRB-regulated data.