# Ontech SMS vs Ferroamp

The clearest difference is update cadence: Ferroamp at every 9 days against Ontech SMS's every 9 months. Ontech SMS's advantage is iOS requirement (8.1 vs 16.4). 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.

Ontech SMS ships an update every 9 months, Ferroamp every 9 days. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Ontech SMS | Ferroamp |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 9 days** |
| Size | 16 MB | 75 MB |
| Requires iOS | **8.1** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Onvako AB](https://appshunter.io/developer/1799962438) | [Ferroamp AB](https://appshunter.io/developer/1685154836) |

## What reviewers say

### Ontech SMS

[App page](https://appshunter.io/ios/app/ontech-sms/id520173130)

**In-app purchases:** none


### Ferroamp

[App page](https://appshunter.io/ios/app/ferroamp/id6458734783)

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

**In-app purchases:** none


## Frequently asked questions

### Is Ontech SMS free?

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

### Is Ferroamp free?

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

### Do Ontech SMS or Ferroamp have ads?

Neither Ontech SMS nor Ferroamp shows ads.

### Which is updated more often, Ontech SMS or Ferroamp?

Ontech SMS ships an update every 9 months, and Ferroamp every 9 days. Most recently, Ontech SMS was updated on October 4, 2026 and Ferroamp on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*