FlashCalc: Price & Decisions

FlashCalc: Price & Decisions is a fast, practical discount calculator, percent calculator, rule of three (ratio) calculator (now also inverse proportion), and random picker—built for real-life moments at the store, online, or with friends. What you can do—instantly • Check if a discount is truly worth it (new price + savings). • Apply a markup and see the final price right away. • Calculate % of a value or what percent a part is of a total. • Compare different pack sizes with rule of three (direct proportion). • Solve time/work scenarios with inverse proportion (faster/more → less time). • Make fair choices with a random decision maker (pick items or shuffle order). Smart percent calculator Choose the mode you need and enter values in simple steps (Step 1 → Step 2 → Result): • Discount: original price + % off → new price + “you save”. • Markup: base price + % increase → final price. • Percent of: how much is X% of a value. • What percent: what % does a part represent from the total. Rule of three (direct & inverse) No formulas to remember—just type what you know and get the result immediately. Direct proportion (more quantity → more price / more output): • Example: 2 kg costs 60 → how much for 3 kg? • Great for: different package sizes, bulk vs small packs, price-per-amount comparisons. Inverse proportion (more speed/workers → less time): • Example: 2 workers finish in 6 hours → how long for 3 workers? • Example: Drive 100 km at 50 km/h vs 80 km/h → how does time change? • Great for: “more resources = less time” situations. Decide & order (random picker) If you have ADHD (or simply a busy mind), this tool can genuinely make everyday choices easier: • Stops overthinking: add options and let FlashCalc decide in seconds. • Reduces decision fatigue: instant random picks help you move forward instead of getting stuck. • Fair outcomes, no debates: pick one or multiple winners, or shuffle a full order with clear positions (1st, 2nd, 3rd…). • Great for shopping choices (brands/sizes/flavors), task lists, and turn order in games. Note: This is a practical decision helper, not a medical or diagnostic tool. Designed for speed & focus • Large, readable controls and clear step titles. • Optional larger controls and reduced animations for calmer use. • Minimal distractions—built for quick use in real situations. Personalizable defaults • Choose the default start tool: Percent / Rule of three / Decision. • Set your preferred percent mode and decision mode, so the app opens exactly where you need it. Privacy-first • No account, no registration. • Calculations stay on your device. • Ads may be shown to support development, while keeping the core experience clear and transparent. FlashCalc is built for the moment you need a clear answer—right now.