М99 Test vs Open Bridge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
М99 Test
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M99 is the minimum standard of human life. The standard reflects the basic principles of our lifestyle, which take into account 99% of risks, which people are often unaware of. Deviating from the standard may lead to fatal consequences, obesity, depression and a reduced quality of life. This app is based on 500+ scientific studies and emphasizes the importance of paying attention to the main aspects of the standard. It proposes simple solutions and guides the reader step by step towards better life. If you need medical help, consult your physician or other qualified health provider, because the app refers to your lifestyle and it doesn't give medical advice.
Open Bridge
Contribute your data to scientific research studies focused on cognition. Complete scheduled activities, similar to puzzles or memory tests, directly on your phone. Your identity is protected as the app collects data solely for research purposes.
- Contribute data for research studies
- Complete scheduled cognitive activities
- Activities resemble puzzles and memory tests
- Data used solely for research
- Protects user identity
- Developed by non-profit research organizations
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Open Bridge is for adults ages 18+ to collect data for research studies. The Open Bridge app lets you contribute data for research. It is used by many research organizations who study cognition. If you choose to join a Open Bridge study, you will use the free app to complete activities on your phone on a pre-set schedule. The activities may resemble puzzles, or they may test your memory. The data collected from the activities help researchers learn more about cognition. Your data will only be used for research. We will not collect your name through the app. This helps protect your identity. Every research study is different, but most studies will take about 30-40 minutes each week and will last for different lengths of time. If you are already part of a Mobile Toolbox study, you can contact your Study Coordinator if you have questions about the study you have joined. Sage Bionetworks, a non-profit research organization in the USA, developed the Open Bridge app. Washington University and Sage Bionetworks developed the activities on the app. Open Bridge supports research studies. It does not provide medical advice, diagnosis, or treatment.
Screenshots
Verdict
The clearest difference is update cadence: Open Bridge at every 5 weeks against М99 Test's every 2 months. М99 Test's advantage is iOS requirement (9.0 vs 16.4). 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.
М99 Test ships an update every 2 months, Open Bridge every 5 weeks. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.
| Parameter | М99 Test | Open Bridge |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 26 MB | 41 MB |
| Age rating | 12+ | 4+ |
| Developer | REMspace inc. | Sage Bionetworks, a Not-For-Profit Research Organization |
In-app purchases
М99 Test
No in-app purchases
Open Bridge
No in-app purchases
