# Open Bridge vs Opia Nova

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.

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.

## The numbers

| Metric | Open Bridge | Opia Nova |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (5 ratings)](https://appshunter.io/ios/app/open-bridge/id1578358408/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/opia-nova/id6737476520/reviews) |
| Number of ratings | **5** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | **Free** | Ad-supported |
| Size | 41 MB | 197 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Sage Bionetworks, a Not-For-Profit Research Organization](https://appshunter.io/developer/972180603) | [Opia Nova LLC](https://appshunter.io/developer/1776601978) |

## What reviewers say

### Open Bridge

[App page](https://appshunter.io/ios/app/open-bridge/id1578358408)

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.

**Highlights:** 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

**In-app purchases:** none


### Opia Nova

[App page](https://appshunter.io/ios/app/opia-nova/id6737476520)

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.

**Highlights:** View class schedules, Sign up for classes, View studio location, Optimize time, Convenient scheduling

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Open Bridge free?

Open Bridge is free to download, with no in-app purchases.

### Is Opia Nova free?

Opia Nova is free to download, with no in-app purchases.

### Which has better reviews, Open Bridge or Opia Nova?

Open Bridge and Opia Nova are both rated 5.0 out of 5 on the App Store, from 5 and 1 ratings respectively.

### Do Open Bridge or Opia Nova have ads?

Neither Open Bridge nor Opia Nova shows ads.

### Which is updated more often, Open Bridge or Opia Nova?

Open Bridge ships an update every 5 weeks, and Opia Nova every 3 months. Most recently, Open Bridge was updated on September 18, 2026 and Opia Nova on September 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*