# A Deeper Map vs Biosphere 2

The clearest difference is review sentiment: A Deeper Map at 100% against Biosphere 2's 22%. A Deeper Map also leads on rating (4.9 vs 3.5) and iOS requirement (13.0 vs 15.1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

A Deeper Map holds the better App Store score, 4.9 against 3.5. Both are backed by a comparable volume of ratings — 15 and 30 respectively. Written reviews point the same way: 100% of A Deeper Map's written reviews are positive against 22% of Biosphere 2's.

A Deeper Map ships an update every 6 months, Biosphere 2 every 3 months. The most recent releases landed on September 8, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | A Deeper Map | Biosphere 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (15 ratings)](https://appshunter.io/ios/app/a-deeper-map/id1495257851/reviews)** | [3.5 (30 ratings)](https://appshunter.io/ios/app/biosphere-2/id1512454025/reviews) |
| Number of ratings | 15 | **30** |
| Positive reviews | **100.0% of reviews** | 22.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 49 MB | 132 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [The Gartrell Group, Inc.](https://appshunter.io/developer/1495257850) | [University of Arizona](https://appshunter.io/developer/437682109) |

## What reviewers say

### A Deeper Map

[App page](https://appshunter.io/ios/app/a-deeper-map/id1495257851)

Explore the ancient agricultural legacy of the Salt River Valley through a map-based app. Compare contemporary and prehistoric maps to understand how the landscape has transformed over time. Learn about the sophisticated prehistoric irrigation systems that shaped the modern desert metropolis.

**Highlights:** Map-based public art project, Juxtaposes ancient and modern maps, Three map view modes (opaque, translucent, satellite), Reveals prehistoric irrigation and agriculture, Culturally sensitive and accurate content, Content explaining historical relevance

**Features:** macOS Compatibility

**In-app purchases:** none


### Biosphere 2

[App page](https://appshunter.io/ios/app/biosphere-2/id1512454025)

Explore the history, architecture, and science of a unique research facility. This family-friendly guide offers an accessible way to learn about its groundbreaking discoveries and 30 years of operation.

**Highlights:** Explore facility history, Learn about architecture, Discover groundbreaking science, Family-friendly guide, Accessible educational content

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is A Deeper Map free?

A Deeper Map is free to download, with no in-app purchases.

### Is Biosphere 2 free?

Biosphere 2 is free to download, with no in-app purchases.

### Which has better reviews, A Deeper Map or Biosphere 2?

A Deeper Map is rated higher. A Deeper Map averages 4.9 out of 5 from 15 ratings, while Biosphere 2 averages 3.5 from 30 ratings.

### Do A Deeper Map or Biosphere 2 have ads?

Neither A Deeper Map nor Biosphere 2 shows ads.

### Which is updated more often, A Deeper Map or Biosphere 2?

A Deeper Map ships an update every 6 months, and Biosphere 2 every 3 months. Most recently, A Deeper Map was updated on September 8, 2026 and Biosphere 2 on June 11, 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.*