Exploratory vs DB RelationalAlgebra

Testers.AI turns your iPhone into a professional QA engineer. Tap the Safari extension on any web page and AI agents immediately get to work — clicking, scrolling, filling forms, and probing for problems like a seasoned tester would. When they're done, a detailed bug report lands in the app: every issue ranked by severity, with steps to reproduce, screenshots, expected vs. actual behavior, and AI-generated fix suggestions. INTELLIGENT EXPLORATION Choose from eight exploration styles — Happy Path, Smoke, Negative, Edge Case, Scenario, Monkey, Adversarial, and Destructive — and focus the agents on what matters most: accessibility, security, performance, UX, forms, navigation, or content. The agents adapt their behavior to the style and focus you select. MULTI-AGENT TESTING Run up to several AI agents in serial across the same page. Each agent brings a different testing persona and approach, giving you broader coverage than any single pass could achieve. BATCH MODE Test an entire list of URLs in one go. Paste them in, or just describe what you want ("top e-commerce checkout pages") and let the AI generate the list for you — even by voice. Results land in a competitive comparison view so you can see which sites have the most issues at a glance. DETAILED REPORTS Every exploration session is saved to your history with: • Issues sorted by severity (Critical → Suggestion) • Agent step-by-step replay • AI summary of what was found • Hero stats: issues found, steps taken, agents used EXPORT ANYWHERE Share results as plain text, JSON, or JIRA wiki markup — ready to paste straight into your bug tracker. Copy individual issues, share full reports, or export a screenshot of the results to send to your team. ISSUES DASHBOARD The Issues tab organizes every bug found across all your sessions by domain and URL, so you can track quality trends across the sites you care about over time. BATCH COMPARE Run the same test across multiple competitors or pages, then review a side-by-side bar chart ranking them by issue count and severity. Great for competitive audits and regression checks before launch. PRIVACY FIRST All exploration history is stored locally on your device. No account required to get started. Testers.AI is built for developers, QA engineers, product managers, and anyone who cares about shipping quality software. Unlock full access with your Testers.AI account for unlimited testing and team sync.

A native iPad and iPhone app that converts a SQL query typed, pasted, or imported from a .sql file into relational algebra, tuple relational calculus and domain relational calculus. Each notation gets a step by step derivation, a final oneline formula, and an interactive diagram an operator tree for the algebra, a quantifier scope tree for the calculus and a fourth view stacks all three against the same query. Whatever SQL asks for that a notation cannot express exactly is reported rather than quietly approximated.