Comparison

FeverApp vs Thermometer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FeverApp

Features
Read full description

FeverApp is your diary to document acute infectious diseases, medication intake, symptoms, vaccines, and more for you and your family. The multimedia library helps to understand illness as a process and fever as a resource of your immune system. It is based on current guidelines regarding fever and febrile diseases. Use the medication scanner to add medicines to your list and track the intake quantity, date and time. FeverApp features: - Create separate profiles for each family member - Document and overview febrile episodes and diseases over time - Document febrile seizures - Document symptoms, measures and medications - Super easy new medication scanning feature - A graph view of well-being and other details - Set reminders for temperature measurements - Receive helpful tips from “Dr. Fee” - Brief informative videos - Read about recent scientific articles and guidelines about fever - Find medication alternatives in Info library Important notes: - To use FeverApp you need a family code, which you can receive from the cooperating medical practices. Please contact us via www.feverapp.de . - FeverApp does not measure temperature. To measure temperature a separate thermometer is necessary. - Your input in the Feverapp helps Prof. David Martin and his team from the University Witten/Herdecke gain a deeper understanding of fever. The project is finantially supported by a grant from the the German Ministry of Education and Research Available languages: German, English and Russian

About

Thermometer

Estimate body temperature using your smartphone without a physical thermometer. Track heart rate, blood pressure, and sync with Apple Watch for real-time fever alerts. Log custom health data and generate shareable PDF reports.

Highlights
  • Temperature estimation without a thermometer
  • Apple Watch Series 8 sync for readings
  • High fever alerts
  • Blood pressure tracking and trend analysis
  • Custom health logs with notes
  • Apple Health sync
  • Shareable PDF reports
Features
Read full description

No thermometer, no problem. Calculate body temperature with your iPhone. Turn your smartphone into a versatile tool for tracking temperature, heart rate, and blood pressure—anytime, anywhere. Functionalities:- -Temperature Estimation: Use your smartphone to estimate body temperature without the need for a physical thermometer. -Apple Watch Sync: Connect seamlessly with Apple Watch Series 8 for automatic temperature readings and real-time fever alerts. -High Fever Alerts: Receive automatic alerts from your Apple Watch when a high fever is detected, keeping you informed in real-time. -Blood Pressure Tracking: Effortlessly log and track your blood pressure, complete with trend analysis for better insights and PDF sharing. -Custom Health Logs: Add personalized notes to track symptoms, treatments, or anything else alongside your health data. -Apple Health sync and PDF reports: Sync with Apple Health and generate easy-to-share temperature PDF reports to keep your family informed. Whether you’re managing a fever, keeping an eye on your cardiovascular health, or tracking your blood pressure, this app offers a simple and effective way to stay in control of your wellness. Ideal for personal use, families, and healthcare providers, our app ensures you stay informed about your vital signs and make confident health decisions. Important: This app is not intended to replace medical advice or treatment. Please consult with a healthcare professional for any medical issues. Terms of use: https://bodytemperatureche.wixsite.com/website-5/legal Privacy policy: https://bodytemperatureche.wixsite.com/website-5/legal Visit us: https://https://bodytemperatureche.wixsite.com/website-5

Screenshots

FeverApp4 screens
Thermometer4 screens

Verdict

The call

The clearest difference is in-app purchases: FeverApp at none against Thermometer's 6. FeverApp also leads on iOS requirement (11.0 vs 15.0). Thermometer's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Thermometer sells 6 in-app purchases, starting at $5.99 per 7 days. FeverApp asks for nothing beyond the download.

UpkeepUpdate frequency

FeverApp ships an update every 3 months, Thermometer every 2 weeks. The most recent releases landed on September 9, 2026 and September 28, 2026 respectively.

Scorecard3 real differences · 7 level
FeverApp versus Thermometer: the parameters behind the verdict, then further details
ParameterFeverAppThermometer
PriceFreeFree
Rating—4.6 (407 ratings) — better
Positive reviews—32.1% of reviews
Number of ratings—407 — better
Update frequencyEvery 3 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPodiPhone, iPod, Apple Watch — better
Requires iOS11.0 — better15.0
Further details — not scored
Size49 MB59 MB
Age rating12+17+
DeveloperDavid Martin199 Developments Private Limited

Bugs and requests

FeverApp

Not enough reviews yet to summarise bugs or requests.

Thermometer

Reported bugs

2 issues
  • Subscription issues and unexpected charges
  • App not functioning as advertised

Requested features

3 requests
  • Option to default to Fahrenheit
  • Ability to share breathing exercises
  • Improved compatibility with newer devices

In-app purchases

None

FeverApp

No in-app purchases

6 purchases

Thermometer

Subscriptions5
  • Week- Body Temperature Checker$5.997 Days
  • Year Promo- Body Thermometer$19.991 Year
  • Year- Body Temperature Checker$29.991 Year
Show 2 more
  • Yearly- Body Fever Checker3 Days trial$29.991 Year
  • Yearly - Thermometer + Blood Oxygen$29.991 Year
One-time1
  • Lifetime- Body Fever Checker$49.99

Questions

Is FeverApp free?
FeverApp is free to download, with no in-app purchases.
Is Thermometer free?
Thermometer is free to download, with in-app purchases available.
Do FeverApp or Thermometer have ads?
Neither FeverApp nor Thermometer shows ads.
Which is updated more often, FeverApp or Thermometer?
FeverApp ships an update every 3 months, and Thermometer every 2 weeks. Most recently, FeverApp was updated on September 9, 2026 and Thermometer on September 28, 2026.

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