# Vaultt vs OnSiren

The clearest difference is update cadence: OnSiren at weekly against Vaultt's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

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

Vaultt ships an update fortnightly, OnSiren weekly. The most recent releases landed on October 27, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Vaultt | OnSiren |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 53.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | — | Free |
| Size | 77 MB | 128 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [StudentVenture](https://appshunter.io/developer/1803674142) | [OnSiren Limited](https://appshunter.io/developer/6795174860) |

## What reviewers say

### Vaultt

[App page](https://appshunter.io/ios/app/vaultt/id6738582949)

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

**In-app purchases:** none


### OnSiren

[App page](https://appshunter.io/ios/app/onsiren/id6795977065)

This platform provides real-time shared awareness and threat intelligence for UK security officers. It briefs users on local events, allows for quick incident reporting, and offers push-to-talk communication with nearby colleagues. Membership requires a valid SIA license.

**Highlights:** Real-time threat intelligence briefings, Quick incident reporting with location, Push-to-talk communication, Shared awareness network for security officers, AI-powered local event updates

**In-app purchases:** none


## Frequently asked questions

### Is Vaultt free?

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

### Is OnSiren free?

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

### Do Vaultt or OnSiren have ads?

Neither Vaultt nor OnSiren shows ads.

### Which is updated more often, Vaultt or OnSiren?

Vaultt ships an update fortnightly, and OnSiren weekly. Most recently, Vaultt was updated on October 27, 2026 and OnSiren 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.*