# AoToRoBo vs Premium Invention Security

AoToRoBo and Premium Invention Security are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

AoToRoBo ships an update fortnightly, Premium Invention Security every 2 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | AoToRoBo | Premium Invention Security |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Size | 65 MB | 158 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Casstime Technologies Co., Ltd.](https://appshunter.io/developer/1238561221) | [Premium Invention Limited](https://appshunter.io/developer/6780796844) |

## What reviewers say

### AoToRoBo

[App page](https://appshunter.io/ios/app/aotorobo/id6761795151)

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

**In-app purchases:** none


### Premium Invention Security

[App page](https://appshunter.io/ios/app/premium-invention-security/id6780796842)

**In-app purchases:** none


## Frequently asked questions

### Is AoToRoBo free?

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

### Is Premium Invention Security free?

Premium Invention Security is free to download, with no in-app purchases.

### Do AoToRoBo or Premium Invention Security have ads?

Neither AoToRoBo nor Premium Invention Security shows ads.

### Which is updated more often, AoToRoBo or Premium Invention Security?

AoToRoBo ships an update fortnightly, and Premium Invention Security every 2 weeks. Most recently, AoToRoBo was updated on October 24, 2026 and Premium Invention Security 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.*