# Ocean 4D+ vs Teacher Meter

The clearest difference is rating: Teacher Meter at 4.3 against Ocean 4D+'s 1.0. Teacher Meter also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 2 months). Ocean 4D+'s advantage is iOS requirement (11.0 vs 15.5). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Ocean 4D+ sells 1 one-off in-app purchase. Teacher Meter asks for nothing beyond the download.

Teacher Meter holds the better App Store score, 4.3 against 1.0. That said, the two scores are not equally well evidenced: Teacher Meter has 20 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Ocean 4D+ ships an update every 2 months, Teacher Meter weekly. The most recent releases landed on September 9, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Ocean 4D+ | Teacher Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/ocean-4d-plus/id1484774384/reviews) | **[4.3 (20 ratings)](https://appshunter.io/ios/app/teacher-meter/id6753925253/reviews)** |
| Number of ratings | 1 | **20** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 251 MB | 53 MB |
| Requires iOS | **11.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Octagon Studio Ltd](https://appshunter.io/developer/998405180) | [Reva Kasula](https://appshunter.io/developer/1843236787) |

## What reviewers say

### Ocean 4D+

[App page](https://appshunter.io/ios/app/ocean-4d-plus/id1484774384)

Explore a vibrant underwater world with augmented reality. Bring marine creatures to life in your environment, interact with them, and learn fascinating facts about their habitats and conservation status.

**Highlights:** Cardless Augmented Reality, Interactive 3D marine creatures, Realistic animations, Digital Encyclopedia of marine animals, Conservation status information, Habitat and diet details

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Marine Animals | $2.99 | one-time |


### Teacher Meter

[App page](https://appshunter.io/ios/app/teacher-meter/id6753925253)

This tool allows students to provide feedback on their teachers' effectiveness and gauge the difficulty of subjects based on the instructor. It helps students compare classes in advance to set realistic expectations and prepare accordingly.

**Highlights:** Teacher effectiveness rating, Class difficulty assessment, Compare classes, Prepare for classes, Set realistic expectations, Assignment notifications

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

**In-app purchases:** none


## Frequently asked questions

### Is Ocean 4D+ free?

Ocean 4D+ is free to download, with in-app purchases available.

### Is Teacher Meter free?

Teacher Meter is free to download, with no in-app purchases.

### Which has better reviews, Ocean 4D+ or Teacher Meter?

Teacher Meter is rated higher. Ocean 4D+ averages 1.0 out of 5 from 1 ratings, while Teacher Meter averages 4.3 from 20 ratings.

### Do Ocean 4D+ or Teacher Meter have ads?

Neither Ocean 4D+ nor Teacher Meter shows ads.

### Which is updated more often, Ocean 4D+ or Teacher Meter?

Ocean 4D+ ships an update every 2 months, and Teacher Meter weekly. Most recently, Ocean 4D+ was updated on September 9, 2026 and Teacher Meter on September 10, 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.*