This library parses REWE eBons into JS objects

moneymoney extension for payback accounts

Laravel application to organise daily food orders in a team.

Telegram bot that uses the reverse-engineered API of Payback and DeutschlandCard, german coupon systems, to periodically activate all available coupons.

Dieses Userscript automatisiert das Einlösen von Payback-Coupons. Es sucht alle unaktivierten Coupons auf der Webseite, klickt sie gleichzeitig an und lädt die Seite neu. Der Vorgang wiederholt sich automatisch bis zu dreimal, um auch dynamisch nachladende Coupons restlos zu erfassen. So sparst du dir lästiges, manuelles Klicken!

Interactive, dependency-free LTV & ROAS modeler for mobile game UA. Fit a retention curve from D1–D30, project LTV/ROAS to D720, find your payback day, and reverse-solve the D7/D14 ROAS you need to break even by D180/360/720.

Brand-agnostic prestige fragrance GTM toolkit—LTV on gross margin, CAC payback, promo economics, Prestige Protection Index, Markdown/HTML reports + Flask preview.

Shows PAYBACK.at points and eCoupons for the current website (Austria)

One-click Windows Playwright automation to activate Payback coupons with persistent local session support

Chrome Extension zum automatischen Aktivieren aller Payback Coupons

Marketing budget allocation simulator for channel mix planning, CAC, ROI, payback, revenue forecasting, contribution analysis, and growth trade-off recommendations.