Project PROTECTS vs KHR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Project PROTECTS
This research study invites adults in the US to help understand the effects of respiratory infections. Participants need a smartphone, email, and internet access to contribute to vital health research.
- Participate in health research
- Understand infection effects
- Smartphone required
- US-based eligibility
- Contribute to scientific understanding
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Project PROTECTS is inviting 6,000 adults across the United States to help researchers better understand the short- and long-term effects of respiratory infections. Project PROTECTS is a collaboration between researchers at the City University of New York (CUNY) Institute for Implementation Science in Population Health (ISPH) and Pfizer. You are eligible to participate in Project PROTECTS if you: - Are 18 years or older - Live in a US state, DC, or Puerto Rico - Have a personal smartphone with a working camera - Have a personal email address - Have internet access If you have any questions, comments, or concerns about the research, you can contact a study coordinator at: ProjectProtects@sph.cuny.edu
KHR
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A controlled-access survey application, this platform prioritizes data integrity by limiting participation to invited individuals. It's built for researchers seeking precise and actionable insights.
Screenshots
Verdict
Project PROTECTS and KHR are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
Project PROTECTS ships an update monthly, KHR fortnightly. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.
| Parameter | Project PROTECTS | KHR |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 80 MB | 47 MB |
| Age rating | 17+ | 17+ |
| Developer | Vibrent Health, Inc. | Laina Enterprises, Inc. |
In-app purchases
Project PROTECTS
No in-app purchases
KHR
No in-app purchases
Questions
Is Project PROTECTS free?
Is KHR free?
Do Project PROTECTS or KHR have ads?
Which is updated more often, Project PROTECTS or KHR?
Other comparisons
