CCC STUDY Diary vs MASTHAVE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CCC STUDY Diary
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We are delighted that you are participating in our study. This App is designed to simplify the timely and accurate documentation of your symptoms (e.g., acute viral rhinosinusitis or grass pollen allergy) and provide the most accurate data possible for clinical research. In addition, the use of study medication as well as the use of medication for symptom control can be documented depending on the study. Clinical trials aim to test the efficacy and tolerability of medications or medical treatments and thereby improve patient treatments. They provide important evidence to answer scientific questions. Therefore, it is important that you regularly record your symptoms, the use of the study medication as well as the effects on your quality of life. The exact specifications will be explained to you by the investigator/study team and are study-specific. Daily entries into the App will take a maximum of 5 minutes and can be made by checking the applicable boxes. To make it easier for you to remember entering your symptoms and/or study medication, you can activate alarms/ reminders in this App. The results of the clinical trial will be communicated to you by your investigator. The CCC STUDY Diary App can only be used in the context of a clinical study. You will receive the login information and password from your investigator/ study team as soon as you participate in one of these studies.
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: CCC STUDY Diary at fortnightly against MASTHAVE's every 6 weeks. MASTHAVE's advantage is iOS requirement (13.0 vs 15.0). 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.
CCC STUDY Diary ships an update fortnightly, MASTHAVE every 6 weeks. The most recent releases landed on September 13, 2026 and September 11, 2026 respectively.
| Parameter | CCC STUDY Diary | MASTHAVE |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 33 MB |
| Age rating | 12+ | 17+ |
| Developer | ClinCompetence Cologne GmbH | Moxie GmbH |
In-app purchases
CCC STUDY Diary
No in-app purchases
MASTHAVE
No in-app purchases







