# Spider Evolution vs ERAIASON

The clearest difference is price: Spider Evolution at Free against ERAIASON's $4.99. Spider Evolution also leads on ratings volume (306 vs 1). ERAIASON's advantage is in-app purchases (none vs 14) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Spider Evolution is free to download; ERAIASON costs $4.99 up front. Spider Evolution sells 14 one-off in-app purchases. ERAIASON asks for nothing beyond the download.

ERAIASON holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Spider Evolution has 306 ratings behind it against 1, so its average is the more settled of the two.

Spider Evolution ships an update every 6 weeks, ERAIASON every 3 weeks. The most recent releases landed on October 19, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Spider Evolution | ERAIASON |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.8 (306 ratings)](https://appshunter.io/ios/app/spider-evolution-idle-game/id1645135841/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eraiason/id6751147600/reviews)** |
| Number of ratings | **306** | 1 |
| Positive reviews | 91.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 158 MB | 184 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [TPG TECNOLOGIA DA INFORMACAO LTDA](https://appshunter.io/developer/444343830) | [Christian Hahm](https://appshunter.io/developer/1833688520) |

## What reviewers say

### Spider Evolution

[App page](https://appshunter.io/ios/app/spider-evolution-idle-game/id1645135841)

Merge exotic spider species to create new mutant creatures with unique features. Discover different stages, unlock new breeds, and enjoy an open-ended gameplay experience with a humorous story. Earn coins by tapping spiders or using eggs to purchase new creatures and expand your collection.

**Highlights:** Merge spider species to create new mutants, Discover different stages and spider breeds, Earn coins by tapping or using spider eggs, Unlock new creatures and expand your collection, Experience a humorous story with twists, Enjoy open-ended, idle gameplay

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

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Alien Currency Pack 1 | $1.99 | one-time |
| Hard Currency Pack 1 | $1.99 | one-time |
| Hard Currency Pack Offer | $1.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Shop Bundle 1 | $2.99 | one-time |
| Promo Bundles Very High | $2.99 | one-time |
| Hard Currency Pack 2 | $4.99 | one-time |
| Alien Currency Pack 2 | $5.99 | one-time |
| Shop Bundle 2 | $5.99 | one-time |
| Promo Bundles High | $5.99 | one-time |
| Trinket | $6.99 | one-time |
| Hard Currency Pack 3 | $9.99 | one-time |
| Starter Bundle Discount | $9.99 | one-time |
| Premium Bundle Discount | $9.99 | one-time |


### ERAIASON

[App page](https://appshunter.io/ios/app/eraiason/id6751147600)

Oversee a population of evolving AI robots in a dynamic voxel landscape. Design robots, build terrains, and influence their evolutionary path as they learn, adapt, and compete in a simulated ecosystem.

**Highlights:** Evolving AI robots, Dynamic voxel landscape, Robot design and creation, Environment manipulation, Interactive evolutionary control, Simulated ecosystem

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

**In-app purchases:** none


## Frequently asked questions

### Is Spider Evolution free?

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

### Is ERAIASON free?

ERAIASON costs $4.99, with no in-app purchases.

### Which has better reviews, Spider Evolution or ERAIASON?

ERAIASON is rated higher. Spider Evolution averages 4.8 out of 5 from 306 ratings, while ERAIASON averages 5.0 from 1 ratings.

### Do Spider Evolution or ERAIASON have ads?

Spider Evolution shows ads; ERAIASON does not.

### Which is updated more often, Spider Evolution or ERAIASON?

Spider Evolution ships an update every 6 weeks, and ERAIASON every 3 weeks. Most recently, Spider Evolution was updated on October 19, 2026 and ERAIASON on October 6, 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.*