COVapp vs MASTHAVE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
COVapp
Participate in scientific research by logging daily symptoms and accessing information about viruses. The app prioritizes user privacy by not collecting personal data beyond manually entered symptoms after consent is given.
- Daily symptom diary
- Virus information and FAQs
- Scientific research participation
- User consent for data collection
- Privacy-focused data handling
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COVapp gives you the opportunity to participate in scientific research. When you have created an account (emailaddres and phonenumber for 2-step verification login), you can login and use the app. The app doesn't collect any personal information. You can fill in a daily diary (list of symptoms) and see information about the virus and see FAQ about it. When you start, you have to give your consent, else you can't fill in the daily diary and the app doesn't collect this data. The app does not collect any other data from your device, other then the you manually enter (symtpoms).
MASTHAVE
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MASTHAVE® is an app developed by renowned doctors that supports patients with mastocytosis in dealing with their disease. Mastocytosis is a rare disease in which mast cells accumulate in various body tissues. It affects around one in 10,000 people and severely limits the quality of life. Despite initial successes in the development of effective drug therapies, complete control of all symptoms is crucial for the well-being and lifestyle of affected patients. Take control of your mastocytosis: In just a few minutes a day, you can record your symptoms and their impact on your quality of life. Work with your treating doctors to track your disease progression, how you respond to your therapy and how it can be optimized for you. To do this, it is important that you record your data continuously over a longer period of time with MASTHAVE®. The data you collect can also help researchers to better understand mastocytosis. Your results will thus contribute to the development of new treatment options. From now on you are no longer alone - MASTHAVE® supports you at all times! Are you a doctor? You can find more information at www.masthave-app.com
Screenshots
Verdict
The clearest difference is update cadence: COVapp at every 3 weeks against MASTHAVE's every 6 weeks. COVapp also leads on iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
COVapp ships an update every 3 weeks, MASTHAVE every 6 weeks. The most recent releases landed on October 16, 2026 and September 30, 2026 respectively.
| Parameter | COVapp | MASTHAVE |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 6.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 119 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | Your Research B.V. | Moxie GmbH |
In-app purchases
COVapp
No in-app purchases
MASTHAVE
No in-app purchases







