# Keet Sentinel vs VitaSign

The clearest difference is update cadence: VitaSign at every 3 days against Keet Sentinel's monthly. Keet Sentinel's advantage is iOS requirement (9.0 vs 14.0). 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.

Keet Sentinel ships an update monthly, VitaSign every 3 days. The most recent releases landed on November 3, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Keet Sentinel | VitaSign |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 days** |
| Size | 25 MB | 103 MB |
| Requires iOS | **9.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Keet Inc.](https://appshunter.io/developer/1168354285) | [Ahmed Ameen](https://appshunter.io/developer/1879291935) |

## What reviewers say

### Keet Sentinel

[App page](https://appshunter.io/ios/app/keet-sentinel/id1507273777)

**Features:** macOS Compatibility

**In-app purchases:** none


### VitaSign

[App page](https://appshunter.io/ios/app/vitasign/id6760668385)

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

**In-app purchases:** none


## Frequently asked questions

### Is Keet Sentinel free?

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

### Is VitaSign free?

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

### Do Keet Sentinel or VitaSign have ads?

Neither Keet Sentinel nor VitaSign shows ads.

### Which is updated more often, Keet Sentinel or VitaSign?

Keet Sentinel ships an update monthly, and VitaSign every 3 days. Most recently, Keet Sentinel was updated on November 3, 2026 and VitaSign 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.*