# Concrete Evap vs InstAlert

The clearest difference is ads: InstAlert at none against Concrete Evap's shown. InstAlert also leads on monetization model (free vs ad-supported) and ratings volume (4 vs 1). Concrete Evap's advantage is iOS requirement (18.2 vs 26.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for Concrete Evap against 5.0 for InstAlert. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

## The numbers

| Metric | Concrete Evap | InstAlert |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/concrete-evap/id6743004622/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/instalert-panic-button/id6757727008/reviews) |
| Number of ratings | 1 | **4** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Every 3 weeks |
| Monetization | Ad-supported | **Free** |
| Size | 5 MB | 31 MB |
| Requires iOS | **18.2** | 26.0 |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Chad Wallace](https://appshunter.io/developer/1653657586) | [Parker Toney](https://appshunter.io/developer/1845003401) |

## What reviewers say

### Concrete Evap

[App page](https://appshunter.io/ios/app/concrete-evap/id6743004622)

This tool helps construction professionals assess the risk of plastic shrinkage cracking in concrete. It analyzes real-time weather data to calculate evaporation rates and provide risk assessments, enabling preventative measures for concrete quality.

**Highlights:** Calculates evaporation rate, Assesses plastic shrinkage cracking risk, Analyzes real-time weather data, Provides risk assessment, Supports construction professionals, Ensures concrete quality

**Features:** macOS Compatibility

**In-app purchases:** none


### InstAlert

[App page](https://appshunter.io/ios/app/instalert-panic-button/id6757727008)

Instantly send safety alerts to your trusted contacts with a single tap. This app provides a quick and reliable way to notify family or colleagues during urgent situations, ensuring help is on the way.

**Highlights:** One-tap alert sending, Customizable contact groups, Real-time location sharing, Reliable alert delivery, Simple and intuitive interface, Privacy and security focused

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Concrete Evap free?

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

### Is InstAlert free?

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

### Which has better reviews, Concrete Evap or InstAlert?

Concrete Evap and InstAlert are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do Concrete Evap or InstAlert have ads?

Concrete Evap shows ads; InstAlert does not.

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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.*