App Showcase: Body Temperature App
App info
- App name: Body Temperature App For Fever
- Onboarding steps: 7
- Paywall type: No Free Trial - Soft Paywall
- Monthly installs: 55,000
- Monthly revenue: $75,000
- App category: medical
What it does
This app offers a way to estimate body temperature without a physical thermometer. It guides users through a two-step process: first, it uses the phone's camera and flash to measure heart rate, and second, it asks the user to tap the screen with each exhalation to calculate their breathing rate. Based on these two vitals, it provides an estimated temperature reading. The app also serves as a comprehensive health log for tracking temperature, symptoms, medications, and other metrics like SpO2 and heart rate over time.
Where it shines
The app's standout feature is its core measurement flow (01:13). By breaking down the process into an automatic heart rate scan and a manual breathing tap-test, it creates an engaging, interactive experience that feels more substantial than a simple scan. After measurement, the logging screen (02:49) is clean and straightforward, allowing users to quickly save their temperature and add qualitative context about how they feel. The app also integrates a useful weather feature (04:09), which includes a 'Heat Index' and CDC flu activity levels, connecting personal health tracking with environmental factors.
UX highlights
- Actionable Disclaimers: Before taking a measurement, the app displays a detailed 'Advice' screen (01:16) listing actions to ensure accuracy. This manages expectations and frames the tool as a serious health utility.
- Guided Measurement: The heart rate (01:30) and breathing rate (02:06) measurement screens provide clear, real-time feedback with large progress indicators, making the process easy to follow.
- Contextual Cross-Promotion: The main dashboard uses tabs for different health metrics (03:20). Tapping a metric tracked by another app in their ecosystem triggers a contextual upsell, a smart way to drive discovery.
- Comprehensive Logging: Users can log not just the temperature number but also how they feel, symptoms, and medications, creating a rich health journal.
- In-app Rating Prompt: The app uses a custom, non-intrusive modal to ask for a rating (00:57), which is a common but well-executed pattern for gathering feedback.
Monetization & growth
The app presents a soft paywall with three subscription tiers (1 Week, 1 Month, 1 Year) early in the onboarding flow (00:14) and again when a user tries to access premium features. There is no free trial offered. The paywall screens lean heavily on social proof, featuring user testimonials and star ratings directly above the purchase options to build trust and justify the cost. The app is also part of a larger suite, using locked features as a growth lever to cross-promote its other health-tracking applications.
Who it’s for
This app is likely for individuals and parents who want a quick, convenient way to get an initial temperature estimate when a thermometer isn't available. It's also well-suited for users who are actively tracking symptoms during an illness, as it allows for detailed logging of temperature, medications, and feelings over time. The data export function suggests it could be useful for sharing health trends with a doctor.
Notes & opportunities
The app repeatedly emphasizes that its measurements are 'just recommendations' and not for medical purposes (02:40). While legally necessary, this frequent disclaiming might slightly undermine user confidence in the core feature. The process of logging symptoms and medications is marked as a premium feature (02:50), which could be a point of friction for users who see that as a basic requirement for a health-tracking app. Making basic symptom logging free could improve initial value and encourage a later upgrade.