# Kumii vs Backyard Biome

The clearest difference is price: Kumii at Free against Backyard Biome's $2.99. Kumii also leads on update cadence (every 6 days vs every 4 weeks). Backyard Biome's advantage is in-app purchases (none vs 10). On ads, device support and iOS requirement there is nothing between them.

Kumii is free to download; Backyard Biome costs $2.99 up front. Kumii sells 10 one-off in-app purchases. Backyard Biome asks for nothing beyond the download.

Kumii ships an update every 6 days, Backyard Biome every 4 weeks. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Kumii | Backyard Biome |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/kumii/id6790106605/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 4 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 108 MB | 55 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dev Dreams LLC](https://appshunter.io/developer/6790106607) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### Kumii

[App page](https://appshunter.io/ios/app/kumii/id6790106605)

Care for and evolve a unique mythical pet in this cozy virtual adventure. Nurture your companion through daily interactions, dress them up, and uncover hidden secrets as your bond grows. This gentle game rewards consistent care and exploration.

**Highlights:** Choose unique mythical pets, Daily care and interaction, Pets evolve through stages, Customize pet's appearance, Daily surprises and rewards, Companion's journal and memories, Discover hidden secrets

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Iron Fang Badge | $2.49 | one-time |
| Storm Medallion | $2.49 | one-time |
| Iron Spire Crown | $2.99 | one-time |
| Storm Crown | $2.99 | one-time |
| Drake Horn Crest | $2.99 | one-time |
| Obsidian Crest | $2.99 | one-time |
| Void Eclipse | $3.49 | one-time |
| Stormforge Glow | $3.49 | one-time |
| Ember Collection | $6.99 | one-time |
| Stormforged Collection | $6.99 | one-time |


### Backyard Biome

[App page](https://appshunter.io/ios/app/backyard-biome-ecosystem-sim/id6795263430)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kumii free?

Kumii is free to download, with in-app purchases available.

### Is Backyard Biome free?

Backyard Biome costs $2.99, with no in-app purchases.

### Do Kumii or Backyard Biome have ads?

Neither Kumii nor Backyard Biome shows ads.

### Which is updated more often, Kumii or Backyard Biome?

Kumii ships an update every 6 days, and Backyard Biome every 4 weeks. Most recently, Kumii was updated on October 24, 2026 and Backyard Biome on October 31, 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.*