CoolGuard vs WhyMyPhone

CoolGuard keeps an eye on your phone's heat — and at night, it's the clock on your nightstand. A hot iPhone runs slower, its battery ages faster, and in summer it heats up within moments in the sun or while gaming, navigating, or charging. CoolGuard shows you where your phone stands on a four-level scale (Normal, Slightly Warm, Hot, Critical), warns you in time, and tells you what to do. HEAT MONITORING • Live heat level on the main screen, with a color-coded ring and a quick tip • Heat Trend: 1-hour and 24-hour curves in a banded or clean style — drag your finger to read the details • Heat Log with calendar and map: when and where your phone got hot • Alerts from the level you choose: push notifications, sound alerts, quiet hours • Monitor Mode: background monitoring, with a Live Activity on the Lock Screen and in the Dynamic Island • Cooling tips and a carefully curated selection of active coolers NIGHT CLOCK AND ALARM • Sleep Mode: dark screen with just the clock and the outdoor temperature — three sizes, your choice of color • Alarms: up to 10, repeating daily; on iOS 26 and later they ring through the system alarm, even when your phone is silenced • Landscape view: big clock, swipeable alarm bar, brightness slider • Burn-in protection: slow pixel drift and dimming to keep your display safe • 12- or 24-hour clock, with seconds if you like WEATHER • Outdoor temperature, with today's and tomorrow's highs and lows • Weather face in the ring: the sun and moon travel around it from sunrise to sunset • A warning on dangerously hot days WIDGET • Small: thermometer, weather, battery level, clock • Medium: adds the heat trend curve and the date • Works on the Lock Screen, too BATTERY • Battery Health and cycle count, compared month by month with your phone's heat MORE • 50 languages, Celsius or Fahrenheit • Private by design: no ads, no analytics, no accounts — your Heat Log never leaves your phone • Free — you can support development with a tip Note: iOS doesn't expose exact temperatures to apps — CoolGuard shows Apple's four official thermal levels.

Phone getting hot, laggy, or draining fast? WhyMyPhone tells you WHY in 30 seconds — and exactly what to do about it. No tech knowledge needed, no computer required. Answer two or three simple questions (e.g. "Does it heat up while charging?") and WhyMyPhone combines your answers with live system signals to rank the most likely causes, then hands you an actionable fix — including deep links straight to the right page in Settings. 【What it does】 • Root-cause diagnosis: charging heat, weak signal, background refresh, battery aging… AI + rules rank the likely causes • Health score: battery, storage, memory and network combined, with trends • Live monitor: CPU, memory, network and thermal state on intuitive curves • AI consult: hand your device metrics to an AI for analysis and ask follow-ups — via cloud, on-device Apple Intelligence, or your own key (BYOK) • Plain-English encyclopedia: why phones get hot, why the screen dims, what throttling means • Weekly report & overheat alerts: automatic weekly device checkups, plus a notification when things get too hot • Home/Lock Screen widgets: health score at a glance; every widget refresh is a bonus sampling chance 【Honest limits】 Due to iOS sandboxing, WhyMyPhone cannot read other apps' power usage, and history is only sampled while the app is in the foreground or refreshed by a widget. We don't pretend to know everything — every conclusion is labeled with confidence and shows you how to verify it in Settings → Battery. 【Pro — one-time purchase】 One-time unlock (no subscription): full deep-dive reports, complete history, and richer weekly analysis. The free version already covers core diagnosis and monitoring. 【Privacy】 No sign-up required. Cloud consults send only this conversation plus a device metrics summary to the model provider; nothing is retained on our servers. BYOK keys stay in your Keychain. Details: https://whymyphone.com/privacy.html [Anonymous usage count] After launch the app sends one non-identifying count (app version, language, iOS major version, and whether Pro is unlocked). It carries no device identifier, no account, and we do not store your IP. You can turn it off in Settings.