Civic Utilities
Analytical tools built to navigate Parisian bureaucracy, economics, and infrastructure. All tools function fully without JavaScript via server-side or explicit fallback methods.
Navigo ROI
Calculate the exact break-even point for transit passes based on your movement patterns.
Rent Estimator
Verify a lease against the official Encadrement des Loyers (rent control) indexes.
Museum Pass ROI
Are you actually going to visit 5 museums in 48 hours? Do the math.
Tipping Ledger
Stop over-tipping. Learn when to leave a 2€ coin and when to leave nothing.
Café Index
An interactive database of espresso prices (au comptoir vs en terrasse) across the city.
Vintage Checker
Cross-reference restaurant wine lists against actual domain release prices to detect gouging.
Micro-Entr. Tax
Freelancer tax burden calculator (URSSAF, Impôts, CFE) for the first 3 years.
SNCF Delay Odds
Statistical probability of delays on major RER and Transilien lines.
Neighborhood Match
A pragmatic algorithm to determine where you should actually live based on budget and tolerance.
Weather Planner
Historical rainfall probabilities to determine if you should risk an outdoor terrace booking.