Open Bridge vs Opia Nova
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Opia Nova
Easily plan and schedule your classes directly from your device. View class schedules, sign up for sessions, and find the studio's location. Optimize your time and maximize convenience.
- View class schedules
- Sign up for classes
- View studio location
- Optimize time
- Convenient scheduling
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Download the Opia Nova App today to plan and schedule your classes! From this mobile App, you can view class schedules and sign up for classes as well as view the studio’s location. Optimize your time and maximize the convenience of signing up for classes from your device! Download this App today!
Screenshots
Verdict
The clearest difference is update cadence: Open Bridge at every 5 weeks against Opia Nova's every 3 months. Open Bridge also leads on monetization model (free vs ad-supported) and ratings volume (5 vs 1). On price, rating, 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.
On the App Store both sit at effectively the same score — 5.0 for Open Bridge against 5.0 for Opia Nova. That said, the two scores are not equally well evidenced: Open Bridge has 5 ratings behind it against 1, so its average is the more settled of the two.
Open Bridge ships an update every 5 weeks, Opia Nova every 3 months. The most recent releases landed on September 18, 2026 and September 13, 2026 respectively.
| Parameter | Open Bridge | Opia Nova |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) | 5.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.4 | 16.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 197 MB |
| Age rating | 4+ | 4+ |
| Developer | Sage Bionetworks, a Not-For-Profit Research Organization | Opia Nova LLC |
Customer experience
Open Bridge
Opia Nova
In-app purchases
Open Bridge
No in-app purchases
Opia Nova
No in-app purchases
