Sound Level · Baro vs Heliochron

■ The tools you reach for first. How loud is it here — and when did it happen? Sound Level shows a big live decibel readout, records when a sound happened and how long it lasted, and carries the noise limits of six countries — each with the law the figure was copied from, the date that text was checked, and a link to the original. A phone microphone is not a calibrated sound level meter. The readings in this app are for reference only; they are not an official measurement and not legal evidence. For an official measurement, contact the responsible authority in your country. Everything runs on the phone. Turn on airplane mode and it keeps working. ------------------------------- ● How loud is it right now ------------------------------- • A giant live dB number you can read across the room, smoothed so it doesn't jump. • Minimum, average and maximum for the session. • Colour bands for hearing comfort — quiet, loud, too loud — with a rough listening time. • A whole-dB offset you can nudge if you have a reference to match. It is remembered next time. ------------------------------- ● When it happened, how long, how often ------------------------------- Neighbours, building managers and mediation services rarely ask "how many decibels". They ask when, for how long, and how often. • While measuring, one tap saves the stretch you just heard: start time, duration, and the maximum and average the meter showed. • A two-hour-band summary shows when the disturbances cluster, with the total count and total time. • Copy the whole record as plain text into an email or a form. The "reference reading, not an official measurement" line goes out with it. • Delete one entry or the whole record with an explicit button. It stays on this phone and is never uploaded. • Nothing is captured automatically — you decide what goes in. It is a personal record. It can help you explain "when, and how often" in a mediation or a complaint, but it is not an official measurement and not legal evidence. ------------------------------- ● Noise limits of six countries, with the source ------------------------------- South Korea, Japan, Germany, France, the United States and Saudi Arabia — read as each law writes them. • Every block names the quantity the limit is read in, where it is measured, the law it comes from, and the date that text was checked. One tap opens the original. • Each row shows its day and night hours, and the period covering the current time is marked. • Korea: apartment floor noise — direct impact 39 dB(A) by day, 34 at night as a 1-minute equivalent level; airborne 45 / 40 over 5 minutes. The seven kinds of sound the rule does not cover are listed, with the mediation centre's number. • Where a law is written in a quantity a phone cannot show, or the limit is a margin over background noise, the app says so and does not put the two numbers side by side. Knowing why a comparison doesn't hold is the useful part. ------------------------------- ● Private by design ------------------------------- • The microphone is analysed on-device and never recorded or uploaded. The app carries no network code at all — verifiable in airplane mode. • Zero analytics, zero telemetry, zero third-party SDKs. No account, no data collection. Privacy label: Data Not Collected. • The country shown first follows your device language. No location, no lookup. ------------------------------- ● Built to be read ------------------------------- • Every button is at least 64 × 64 pt; large type throughout, and a huge dB number. • High-contrast, AMOLED-friendly black that sips battery. • No double-taps, no swipes, no hidden gestures — just tap. ------------------------------- ● The Baro promise ------------------------------- UI: English · Korean · Japanese · German · French · Arabic · Chinese. Sound Level is part of Baro — lightweight tools that respect your data, your battery and your time. No subscriptions. No ads. "The tools you reach for first."

Follow the sun. Look at a familiar place differently. Heliochron is a pocket instrument for light, time, and place. Use the AR view to see the calculated sun path over your surroundings, then explore the day and year with two slim, tactile thumbwheels. Notice a courtyard on an architectural walk. Explore a roofline in another season. Look from a possible planter position, or find a reason to return to a favorite view. THE PLACE COMES FIRST On first launch, a short explanation shows why location and camera access are useful. Sun calculations happen on your iPhone, without uploading your location. Allow access to start exploring, or enter coordinates manually in Settings. Narrow azimuth and elevation rulers leave room for the world outside. TIME AT YOUR FINGERTIPS Use Sun to change the time of day and date with separate black-metal wheels. Compare seasonal paths or return to Now with a tap. With obstacle editing off, drag the sun or its path to explore another time; the wheels follow your movement. COMPARE THE YEAR Turn on Year paths in Sun to compare seven representative trajectories, pairing months with similar sun paths. Month labels start in a column on the right and can be dragged along their paths. The overlay starts off and remembers your choice. The paths approximate the 21st of the first named month. MARK WHAT STANDS IN THE WAY Optionally paint trees, buildings, or hills with your finger. Fine diagonal hatching shows your marks, and the sun path dims behind them. Open Obstacles to paint, erase, undo, adjust the brush, or save and restore a named place. KEEP THE VIEW Tap the camera button to save the current sun view, including the camera scene, path, and obstacle marks, to Photos. Photos access is requested only when saving. Saved places and drawings stay locally on your iPhone. No account is required. STAY CURIOUS. KNOW THE LIMITS. Heliochron shows calculated sun positions, not weather or shadows moving across buildings. Obstacle painting is manual, not automatic detection. Marks describe one viewpoint and need checking when you move or return. Alignment depends on location, compass heading, camera tracking, and conditions. Settings includes compass correction and tracking recovery. Avoid pointing the camera directly at the sun for prolonged periods: this may damage the camera. The in-app warning and camera pause are reminders, not physical protection. Pausing capture cannot block sunlight; turn the lens away. For architects and urban planners exploring off duty, garden and balcony growers, and anyone who enjoys looking closer. Not a certified survey, building-compliance, PV-design, or professional solar-assessment tool.