# i.Spider vs Kitty Falling Blocks

The clearest difference is in-app purchases: i.Spider at none against Kitty Falling Blocks's 2. i.Spider also leads on iOS requirement (9.0 vs 13.0). Kitty Falling Blocks's advantage is update cadence (every 3 months vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Kitty Falling Blocks sells 2 one-off in-app purchases. i.Spider asks for nothing beyond the download.

i.Spider ships an update every 6 months, Kitty Falling Blocks every 3 months. The most recent releases landed on October 12, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | i.Spider | Kitty Falling Blocks |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 6 months | **Every 3 months** |
| Size | 17 MB | 34 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Manuel Lopez Lopez](https://appshunter.io/developer/1158531173) | [Mihoko Araki](https://appshunter.io/developer/1476136915) |

## What reviewers say

### i.Spider

[App page](https://appshunter.io/ios/app/ispider/id1531352696)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kitty Falling Blocks

[App page](https://appshunter.io/ios/app/kitty-falling-blocks/id6450643251)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Infinite Life | $0.99 | one-time |
| Kitty with no ads | $0.99 | one-time |


## Frequently asked questions

### Is i.Spider free?

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

### Is Kitty Falling Blocks free?

Kitty Falling Blocks is free to download, with in-app purchases available.

### Do i.Spider or Kitty Falling Blocks have ads?

Both i.Spider and Kitty Falling Blocks show ads.

### Which is updated more often, i.Spider or Kitty Falling Blocks?

i.Spider ships an update every 6 months, and Kitty Falling Blocks every 3 months. Most recently, i.Spider was updated on October 12, 2026 and Kitty Falling Blocks on October 3, 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.*