# ALERTABLU vs Plugfield

The clearest difference is review sentiment: Plugfield at 100% against ALERTABLU's 17%. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ALERTABLU ships an update fortnightly, Plugfield every 2 weeks. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | ALERTABLU | Plugfield |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 17.1% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 69 MB | 99 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [Prefeitura Municipal de Blumenau](https://appshunter.io/developer/1066281687) | [Plugfield Tecnologia em Agronegócios](https://appshunter.io/developer/1781935229) |

## What reviewers say

### ALERTABLU

[App page](https://appshunter.io/ios/app/alertablu/id1066281688)

Monitor critical events in Blumenau with real-time river levels and weather forecasts. Receive personalized alerts for your registered locations and access emergency information, including escape routes during floods.

**Highlights:** Real-time river level monitoring, Flood prediction alerts, Personalized location monitoring, Detailed weather and flood data, Incident reporting to Civil Defense, Flood escape route planning

**Features:** macOS Compatibility

**In-app purchases:** none


### Plugfield

[App page](https://appshunter.io/ios/app/plugfield/id1438103349)

Monitor real-time environmental data from your Plugfield stations and sensors. Track weather conditions, air and water quality, and agricultural metrics directly on your mobile device. Includes local weather forecasts.

**Highlights:** Real-time data tracking, Weather condition monitoring, Air and water quality, Agricultural sensors, Local weather forecasts

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

**In-app purchases:** none


## Frequently asked questions

### Is ALERTABLU free?

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

### Is Plugfield free?

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

### Do ALERTABLU or Plugfield have ads?

Neither ALERTABLU nor Plugfield shows ads.

### Which is updated more often, ALERTABLU or Plugfield?

ALERTABLU ships an update fortnightly, and Plugfield every 2 weeks. Most recently, ALERTABLU was updated on October 12, 2026 and Plugfield on October 8, 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.*