# 911sms vs centinics

The clearest difference is update cadence: centinics at every 6 weeks against 911sms's every 11 months. centinics also leads on iOS requirement (13.0 vs 15.6). 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.

911sms ships an update every 11 months, centinics every 6 weeks. The most recent releases landed on September 29, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | 911sms | centinics |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 weeks** |
| Size | 21 MB | 32 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [LifeGuard Global Inc.](https://appshunter.io/developer/1060701210) | [JAM INFOSYS, INC](https://appshunter.io/developer/919833617) |

## What reviewers say

### 911sms

[App page](https://appshunter.io/ios/app/911sms/id1181355084)

**Features:** macOS Compatibility

**In-app purchases:** none


### centinics

[App page](https://appshunter.io/ios/app/centinics/id1187304549)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 911sms free?

911sms is free to download, with no in-app purchases.

### Is centinics free?

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

### Do 911sms or centinics have ads?

Neither 911sms nor centinics shows ads.

### Which is updated more often, 911sms or centinics?

911sms ships an update every 11 months, and centinics every 6 weeks. Most recently, 911sms was updated on September 29, 2026 and centinics on October 2, 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.*