# RainAlertz vs Flash Weather

The clearest difference is review sentiment: Flash Weather at 65% against RainAlertz's 20%. Flash Weather also leads on rating (4.4 vs 2.5) and update cadence (fortnightly vs every 2 months). RainAlertz's advantage is in-app purchases (none vs 2). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Flash Weather sells 2 in-app purchases, starting at $3.99 per month. RainAlertz asks for nothing beyond the download.

Flash Weather holds the better App Store score, 4.4 against 2.5. Both are backed by a comparable volume of ratings — 36 and 105 respectively. Written reviews point the same way: 20% of RainAlertz's written reviews are positive against 65% of Flash Weather's.

RainAlertz ships an update every 2 months, Flash Weather fortnightly. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | RainAlertz | Flash Weather |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (36 ratings)](https://appshunter.io/ios/app/rainalertz/id946894386/reviews) | **[4.4 (105 ratings)](https://appshunter.io/ios/app/flash-weather-future-radar/id6462927563/reviews)** |
| Number of ratings | 36 | **105** |
| Positive reviews | 20.0% of reviews | **64.6% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Freemium |
| Best chart rank | — | **#173** |
| Size | 1 MB | 73 MB |
| Requires iOS | 18.2 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [AAA Innovations](https://appshunter.io/developer/946894385) | [Flash Scientific Technology](https://appshunter.io/developer/1703653310) |

## What reviewers say

### RainAlertz

[App page](https://appshunter.io/ios/app/rainalertz/id946894386)

Receive customized text reminders for potential rain, ensuring you never forget your umbrella. The app's design is themed around purchasing a logoed umbrella.

**Highlights:** Rain probability alerts, Customized text reminders, Themed graphics for umbrella purchase, Free to download and use

**Features:** Vision Pro support

**In-app purchases:** none


### Flash Weather

[App page](https://appshunter.io/ios/app/flash-weather-future-radar/id6462927563)

**Currently charting:** #173 Top Grossing · Weather (US App Store)

This app uses advanced algorithms and deep learning to predict lightning strikes before they happen. It provides real-time and future radar, smart push notifications, and heat stress forecasting for outdoor safety. Get hourly and 7-day forecasts for temperature, precipitation, and more.

**Highlights:** Predictive lightning alerts, Live Activities on Lock Screen, Future radar up to 18 hours, Smart push notifications, Heat and WBGT forecasting, 7-day hourly and daily forecasts

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flash Premium Monthly | $3.99 | per month |
| Flash Premium Yearly | $39.99 | per year |


## Frequently asked questions

### Is RainAlertz free?

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

### Is Flash Weather free?

Flash Weather is free to download, with in-app purchases available.

### Which has better reviews, RainAlertz or Flash Weather?

Flash Weather is rated higher. RainAlertz averages 2.5 out of 5 from 36 ratings, while Flash Weather averages 4.4 from 105 ratings.

### Do RainAlertz or Flash Weather have ads?

Neither RainAlertz nor Flash Weather shows ads.

### Which is updated more often, RainAlertz or Flash Weather?

RainAlertz ships an update every 2 months, and Flash Weather fortnightly. Most recently, RainAlertz was updated on October 24, 2026 and Flash Weather on October 30, 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.*