# FLEX IoT vs UDP Sender

The clearest difference is update cadence: UDP Sender at fortnightly against FLEX IoT's every 10 months. FLEX IoT's advantage is iOS requirement (15.1 vs 17.6). 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.

FLEX IoT ships an update every 10 months, UDP Sender fortnightly. The most recent releases landed on October 19, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | FLEX IoT | UDP Sender |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Fortnightly** |
| Size | 31 MB | 4 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Z - Wave Tecnologia e Representacao de Aparelhos Eletronicos LTDA.](https://appshunter.io/developer/980639890) | [Jhonyfer Angarita](https://appshunter.io/developer/1847210034) |

## What reviewers say

### FLEX IoT

[App page](https://appshunter.io/ios/app/flex-iot/id6630393858)

**Features:** macOS Compatibility

**In-app purchases:** none


### UDP Sender

[App page](https://appshunter.io/ios/app/udp-sender/id6756079510)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is FLEX IoT free?

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

### Is UDP Sender free?

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

### Do FLEX IoT or UDP Sender have ads?

Neither FLEX IoT nor UDP Sender shows ads.

### Which is updated more often, FLEX IoT or UDP Sender?

FLEX IoT ships an update every 10 months, and UDP Sender fortnightly. Most recently, FLEX IoT was updated on October 19, 2026 and UDP Sender on October 5, 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.*