Nap Timer vs Lux Meter

Feel ENERGIZED and REFRESHED with a Power Nap! Nap Timer allows you to fall asleep and wake up within a period of time. SCIENTIFICALLY PROVEN cientifically proven to improve cognitive function, increase productivity, and alertness while leaving you energized and refreshed. Nap Timer is the SIMPLE and FAST way to set an alarm for the ideal power nap. A study by NASA found a 26-minute power nap improved performance by 34% and alertness by 54%. The secret to successful power naps is not sleeping too much. It is advised not to sleep over 30 to 40 minutes, which at this point you enter a state of deep sleep. Waking up in deep sleep causes sleep inertia, leaving you feeling groggy, drowsy, and generally worse off than before the nap. Power Nap Timer prevents you from entering this state of sleep by limiting how many minutes you are allowed to set an alarm to wake up from your nap. 6 Benefits of Power Napping: 1. Reduces Stress 2. Increases alertness and productivity 3. Improves memory and learning 4. Increases cognitive functioning 5. Boosts creativity 6. Improves health Features: - Simple Easy to understand UI - Nap Timer - Stopwatch - Date and Time - Stylish Menu System

Lux Meter turns your iPhone into a professional light meter. Using your camera and the ISO 2720 photographic standard, it measures illuminance in lux and foot-candles in real time — accurately, fully offline, with no ads and no sign-up. Whether you're setting up studio lighting, checking your desk for eye comfort, dialing in grow lights for plants, or metering a film scene, Lux Meter gives you the numbers the pros rely on. MEASURE • Real-time lux and foot-candle readout (tap to switch units) • Exposure Value (EV) at your chosen ISO • Color temperature (CCT in Kelvin) estimate from the camera • Live camera preview with a center spot reticle • Spot metering (center) or average metering (whole frame) • Min / max / average statistics with a live chart • Hold to lock a reading • Plain-language light labels (Office lighting, Overcast day, Direct sunlight…) • Low-light path reads down to sub-1 lux EXPOSURE CALCULATOR (2-in-1) • Set any two of aperture / shutter / ISO — it solves the third • Cinema mode: frame-rate and shutter-angle presets, plus the 180° rule • ND filter and exposure compensation • Sunny 16 helper and a depth-of-field estimate TARGETS & PRESETS • Use-case presets: Reading, Office/Ergonomics, Photography, Film/Video, Plants & Greenhouse, Aquarium/Terrarium • Set a target lux band and get a subtle alert when the light is in range • Optional haptic and audio meter tick that speeds up as light increases CALIBRATION YOU CAN TRUST • Independent calibration for front and back cameras • Multi-point calibration fitted across the whole range • See raw and calibrated values side by side • Reset to default anytime SAVE & EXPORT • Save single readings or record a session over time • Min/max/average per session, notes and optional location tag • History list with rename, delete and CSV export (share sheet) BUILT RIGHT • Works 100% offline — no account, no tracking, no network • No ads, nothing locked behind a paywall • Grid and histogram overlays, screen-brightness pin, keep-awake • Clean dark-first design, light mode too • 8 languages with instant in-app switching A note on accuracy: iOS does not give apps access to the ambient light sensor, so Lux Meter uses camera-based reflective metering (ISO 2720). For best results, calibrate once against a reference and use the same lighting conditions. Measure light like a pro. Download Lux Meter.