UnitFlip vs LunaLock

UnitFlip converts units instantly. Type a number, pick your units, and see the result live. No extra taps, no delays, no ads. Every conversion category is free, and the whole app is ad-free with no tracking. Built for travelers, students, cooks, and anyone who needs a fast, clean converter. ALL CATEGORIES, FREE - Length (meters, feet, inches, miles, and more) - Weight (kilograms, pounds, ounces, grams) - Temperature (Celsius, Fahrenheit, Kelvin) - Volume (liters, gallons, cups, milliliters) - Speed (km/h, mph, knots, m/s) - Time (seconds, minutes, hours, days, weeks) - Area (square meters, square feet, acres, hectares) - Digital Storage (bytes, KB, MB, GB, TB) - Cooking (cups, tablespoons, teaspoons, milliliters) - Currency (30 world currencies) - Fuel Economy (mpg, L/100km, km/L) - Pressure (psi, bar, atm, pascal) - Angle (degrees, radians, gradians) FEATURES - Live conversion as you type - Swap units with one tap - Save favorite conversion pairs - Adjustable decimal precision - Light, dark, and system appearance - Works offline (currency uses saved rates) - No ads, no tracking, no account required UNITFLIP PRO (one-time purchase) Upgrade once to unlock: - Live daily rates for 27 of the 30 currencies, with on-demand refresh (AED, SAR, and TWD use fixed reference rates) - Unlimited saved favorites Pay once, yours forever. No subscription. Questions or feedback? Reach us any time from Settings.

LunaLock is the period tracker that actually keeps your data private. No cloud sync. No accounts. No data collection. Your period data stays on your device, period. Unlike other period apps that upload your most personal health data to remote servers, LunaLock was built from the ground up with one principle: your data never leaves your phone. FREE FEATURES: - Log period start and end dates with haptic feedback - Smart cycle prediction with confidence ranges (not just averages) - Track 6 common symptoms: cramps, bloating, headache, fatigue, acne, mood swings - Log your daily mood with 6 mood options - Record flow level from spotting to heavy - Calendar view with period and prediction markers - FaceID and PIN lock with emergency shake-to-lock - Auto-lock timer for extra security - Period reminders with customizable advance notice - Onboarding privacy promise - Delete all data anytime - No ads, no accounts, no tracking PRO FEATURES (one-time $3.99 purchase): - Trend charts for cycle length, symptom frequency, and mood patterns - Data export as PDF for doctor visits or JSON for other apps - Home screen widget with countdown and cycle day - 5 beautiful color themes (Luna, Rose, Ocean, Forest, Sunset) - HealthKit write-only integration (optional) - Monthly and annual cycle reports - Emergency shake-to-lock - All future updates included WHY LUNALOCK? Other period apps like Flo and Clue require accounts, collect your data, and use subscriptions. LunaLock is different: - $3.99 once, not $4.99/month forever - Zero data collection - we literally cannot see your data - FaceID lock means even someone borrowing your phone cannot see your period info - Emergency shake-to-lock for when you need instant privacy LunaLock. Your period. Your phone. Nobody else's.