Discover tools built by indie makers, solo founders, and AI-native teams. Filter by trust, category, and build stack to find a credible shortlist faster.
Organic order follows listing usefulness, trust, and community response. Owners verified in the last 90 days receive a small trust lift. Paid placements use separate rotating slots and are labelled Sponsored.
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Free Excel practice with interactive browser worksheets
sheettutor.top
Free tools for personality, relationships, career fit and practical self-reflection
personahaven.com
Test large powers and division-by-zero inputs while separating overflow, error, and infinity.
calculatorqueen.com
Combine AP Biology practice component percentages with published weights into a 0–100 composite.
calculatorqueen.com
Combine 60 MCQ results and seven FRQ rubric scores into a transparent 50/50 practice composite.
calculatorqueen.com
Audit the 45/55 AP Lang practice composite and compare dated, nonofficial planning models.
calculatorqueen.com
Convert centimeters and millimeters both ways using the exact metric factor.
calculatorqueen.com
Convert milliwatts and watts both ways with SI formulas, a scale chart, and CSV.
calculatorqueen.com
Nominate any app and we'll add it to the directory. The real owner can claim the listing later.
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