# Build i vs Bird Versus Evil

The clearest difference is rating: Bird Versus Evil at 5.0 against Build i's 3.7. Build i's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Bird Versus Evil sells 5 one-off in-app purchases. Build i asks for nothing beyond the download.

Bird Versus Evil holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Build i ships an update every 2 months, Bird Versus Evil every 40 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Build i | Bird Versus Evil |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (3 ratings)](https://appshunter.io/ios/app/build-i-bot/id1319079814/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bird-versus-evil/id1506039518/reviews)** |
| Number of ratings | **3** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 40 months |
| Monetization | Free | — |
| Size | 31 MB | 1.2 GB |
| Requires iOS | **8.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Beta Software Technologies Co., Ltd](https://appshunter.io/developer/440648438) | [L&L Programming LLC](https://appshunter.io/developer/1289929597) |

## What reviewers say

### Build i

[App page](https://appshunter.io/ios/app/build-i-bot/id1319079814)

This app introduces users to robotics through a flexible kit that can be transformed into six different configurations. It offers a proven STEM education experience, designed to interact with the robot and build user confidence. The smart components are simple and easy to connect for a smooth assembly process.

**Highlights:** Learn robotics basics, Flexible robot kit with 6 configurations, Proven STEM education, Interactive smart app, Simple component assembly

**Features:** macOS Compatibility

**In-app purchases:** none


### Bird Versus Evil

[App page](https://appshunter.io/ios/app/bird-versus-evil/id1506039518)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skip build time | $0.99 | one-time |
| Skip portal wait | $3.99 | one-time |
| Purchase Package Three | $9.99 | one-time |
| Buy Package One | $29.99 | one-time |
| Purchase Package Two | $49.99 | one-time |


## Frequently asked questions

### Is Build i free?

Build i is free to download, with no in-app purchases.

### Is Bird Versus Evil free?

Bird Versus Evil is free to download, with in-app purchases available.

### Which has better reviews, Build i or Bird Versus Evil?

Bird Versus Evil is rated higher. Build i averages 3.7 out of 5 from 3 ratings, while Bird Versus Evil averages 5.0 from 1 ratings.

### Do Build i or Bird Versus Evil have ads?

Bird Versus Evil shows ads; Build i does not.

### Which is updated more often, Build i or Bird Versus Evil?

Build i ships an update every 2 months, and Bird Versus Evil every 40 months. Most recently, Build i was updated on October 24, 2026 and Bird Versus Evil on October 24, 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.*