Keep performance responsive
Know when iOS is managing thermal pressure, then ease off demanding work before games, camera use, or heavy apps feel the slowdown.
Made for iPhone & iPad
Your device already knows when it’s under thermal pressure.
Now you can too.
Catch rising thermal pressure early, take one simple cooling step, and build habits that help protect your battery and everyday performance.
NominalFairSeriousCritical
Thermal StateNominal
Powered byApple Thermal State
Native Apple signal
Monitoring works offline
Designed for iPhone & iPad
Why monitor Thermal State?
Your battery remembers the heat.
Apple warns that using an iPhone or iPad in very hot conditions can permanently shorten battery life. Thermal State gives you an early signal—so you can change what you’re doing before heat becomes a repeated habit.
Read Apple’s guidance on heat and battery lifeKeep useful battery backup longer
Spot the charging and usage patterns that repeatedly warm your device, then build cooler habits that support long-term battery health.
Keep more value in your device
A battery that stays useful for longer improves daily life now—and can support your device’s condition when it’s time to exchange or resell.
A clearer signal
See what iOS sees.
See what iOS sees.
Know what to do next.
Apple classifies system thermal pressure in four states. Sabja turns that quiet system signal into calm, practical guidance.
Nominal
Your device is operating within its usual thermal range.
Fair
Thermal pressure is rising. Small changes can help it settle.
Serious
iOS may reduce performance while the device cools.
Critical
Pause demanding activity and give the device time to recover.
01
Know now—not after performance drops.
See the current Thermal State at a glance and receive a clear alert when it rises or eases.
- Handy on Lock Screen
- Alerts when Thermal State changes
- Daily summaries
HANDY AT A GLANCE
Check the heat before you even unlock.
Add Sabja’s widget to your Lock Screen and see the current Thermal State in the moment you reach for your iPhone.
- No need to open the app
- Current state at a glance
- Available with Sabja Pro
Stop guessing. Take the next best step.
Smart Suggestion connects a rising state with factors such as charging, screen brightness, Wi‑Fi, and Low Power Mode—then gives you one useful action.
Turn one warm moment into a cooler routine.
Sabja Pro History shows thermal load across 24 hours, 7 days, or 30 days—so recurring patterns become obvious and easier to change.
Built around your day
From a glance to the full story.
Quick status when you need it. Clear context when you want to understand what changed.
No account. No cloud required.
Offline by default
Your device can tell you what’s happening—without telling the internet.
Everything you need to monitor Thermal State works on your device: live state, Smart Suggestion, saved local history, and cooling guidance. Sabja stays useful on a flight, on the road, or anywhere your connection disappears.
Made for the bigger screen
A complete thermal dashboard on iPad.
Sabja’s iPad layout keeps your current state, warm duration, high-risk events, and cooling guidance together—without crowding the screen.
Adaptive iPad layoutLight & Dark ModeApple-native design
Honest by design
A system signal—not a made-up reading.
Sabja reads Apple’s qualitative system Thermal State: Nominal, Fair, Serious, or Critical. It does not claim to reveal hidden CPU or battery sensor values in degrees.
That means the information stays grounded in the same native signal iOS uses to manage performance under thermal pressure.
Know before it throttles
Keep the performance. Build healthier battery habits.
Download Sabja for iPhone and iPad. Use the Home screen for free; unlock History and widgets with Sabja Pro.
Download on theApp Store