# MONITORING & TIMER RELAY vs FLEX IoT

The clearest difference is update cadence: MONITORING & TIMER RELAY at every 4 months against FLEX IoT's every 10 months. MONITORING & TIMER RELAY also leads on iOS requirement (12.0 vs 15.1). 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.

MONITORING & TIMER RELAY ships an update every 4 months, FLEX IoT every 10 months. The most recent releases landed on September 24, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | MONITORING & TIMER RELAY | FLEX IoT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 10 months |
| Size | 195 MB | 31 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Phoenix Contact GmbH & Co. KG](https://appshunter.io/developer/426916392) | [Z - Wave Tecnologia e Representacao de Aparelhos Eletronicos LTDA.](https://appshunter.io/developer/980639890) |

## What reviewers say

### MONITORING & TIMER RELAY

[App page](https://appshunter.io/ios/app/monitoring-and-timer-relay/id1505993143)

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

**In-app purchases:** none


### FLEX IoT

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MONITORING & TIMER RELAY free?

MONITORING & TIMER RELAY is free to download, with no in-app purchases.

### Is FLEX IoT free?

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

### Do MONITORING & TIMER RELAY or FLEX IoT have ads?

Neither MONITORING & TIMER RELAY nor FLEX IoT shows ads.

### Which is updated more often, MONITORING & TIMER RELAY or FLEX IoT?

MONITORING & TIMER RELAY ships an update every 4 months, and FLEX IoT every 10 months. Most recently, MONITORING & TIMER RELAY was updated on September 24, 2026 and FLEX IoT on October 1, 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.*