# Orion Sentry vs OneTap Call

The clearest difference is update cadence: Orion Sentry at weekly against OneTap Call's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Orion Sentry sells 2 in-app purchases, starting at $0.99 per month and OneTap Call sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Orion Sentry ships an update weekly, OneTap Call every 3 weeks. The most recent releases landed on October 27, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Orion Sentry | OneTap Call |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/orion-sentry/id1594469593/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 7 MB |
| Requires iOS | 18.5 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lithium ehf](https://appshunter.io/developer/1583999127) | [金花 许](https://appshunter.io/developer/1635148421) |

## What reviewers say

### Orion Sentry

[App page](https://appshunter.io/ios/app/orion-sentry/id1594469593)

Receive instant alerts on your iPhone when your Mac's security is breached. Browse and save motion-triggered photos stored in iCloud through a clean interface. This free companion app enhances your Mac's security system.

**Highlights:** Instant alarm alerts on iPhone, Browse motion-triggered photos, Save security photos to iPhone, Clean, modern interface, Free to use

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Orion Sentry Pro Monthly | $0.99 | per month |
| Orion Sentry Pro (Forever) | $9.99 | one-time |


### OneTap Call

[App page](https://appshunter.io/ios/app/onetap-call/id6757780737)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Care (Monthly) | $1.99 | per month |


## Frequently asked questions

### Is Orion Sentry free?

Orion Sentry is free to download, with in-app purchases available.

### Is OneTap Call free?

OneTap Call is free to download, with in-app purchases available.

### Do Orion Sentry or OneTap Call have ads?

Neither Orion Sentry nor OneTap Call shows ads.

### Which is updated more often, Orion Sentry or OneTap Call?

Orion Sentry ships an update weekly, and OneTap Call every 3 weeks. Most recently, Orion Sentry was updated on October 27, 2026 and OneTap Call on October 15, 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.*