FeverApp vs What Week
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FeverApp
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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
What Week
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What week are you in? Just add it to your home or lock screen. Or was your child already born? Set the date of birth and keep track on how old your child is.
Screenshots
Verdict
The clearest difference is iOS requirement: FeverApp at 11.0 against What Week's 17.0. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.
| Parameter | FeverApp | What Week |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 49 MB | 1 MB |
| Age rating | 12+ | 17+ |
| Developer | David Martin | Jan Oskar Brinker |
In-app purchases
FeverApp
No in-app purchases
What Week
No in-app purchases









