# CERTAS multicall vs Alertify

The clearest difference is update cadence: Alertify at every 8 days against CERTAS multicall's every 6 months. CERTAS multicall's advantage is iOS requirement (15.0 vs 17.0). 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.

CERTAS multicall ships an update every 6 months, Alertify every 8 days. The most recent releases landed on September 20, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | CERTAS multicall | Alertify |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 8 days** |
| Size | 81 MB | 13 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Certas AG](https://appshunter.io/developer/1488740270) | [Sertus Group SA](https://appshunter.io/developer/1704980209) |

## What reviewers say

### CERTAS multicall

[App page](https://appshunter.io/ios/app/certas-multicall/id6446119719)

**Features:** macOS Compatibility

**In-app purchases:** none


### Alertify

[App page](https://appshunter.io/ios/app/alertify/id6463781481)

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

**In-app purchases:** none


## Frequently asked questions

### Is CERTAS multicall free?

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

### Is Alertify free?

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

### Do CERTAS multicall or Alertify have ads?

Neither CERTAS multicall nor Alertify shows ads.

### Which is updated more often, CERTAS multicall or Alertify?

CERTAS multicall ships an update every 6 months, and Alertify every 8 days. Most recently, CERTAS multicall was updated on September 20, 2026 and Alertify 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.*