# NERV Disaster Prevention vs SACHET

The clearest difference is rating: NERV Disaster Prevention at 4.7 against SACHET's 1.0. NERV Disaster Prevention also leads on review sentiment (80% vs 56%) and ratings volume (47 vs 1). SACHET's advantage is in-app purchases (none vs 2) and update cadence (every 10 days vs every 6 weeks). On price, ads and device support there is nothing between them.

Both are free to download. NERV Disaster Prevention sells 2 in-app purchases, starting at $2.49 per month. SACHET asks for nothing beyond the download.

NERV Disaster Prevention holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: NERV Disaster Prevention has 47 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 80% of NERV Disaster Prevention's written reviews are positive against 56% of SACHET's.

NERV Disaster Prevention ships an update every 6 weeks, SACHET every 10 days. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | NERV Disaster Prevention | SACHET |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (47 ratings)](https://appshunter.io/ios/app/nerv-disaster-prevention/id1472338480/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/sachet/id6443882278/reviews) |
| Number of ratings | **47** | 1 |
| Positive reviews | **80.5% of reviews** | 56.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#31** | — |
| Size | 76 MB | 38 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gehirn Inc.](https://appshunter.io/developer/1451034052) | [CDOT](https://appshunter.io/developer/1257510255) |

## What reviewers say

### NERV Disaster Prevention

[App page](https://appshunter.io/ios/app/nerv-disaster-prevention/id1472338480)

**Currently charting:** #31 Top Free · Weather (US App Store)

This app provides critical disaster warnings for earthquakes, tsunamis, volcanic eruptions, and weather-related events like floods and landslides. It offers real-time information optimized for your current and registered locations, helping you make informed decisions during emergencies.

**Highlights:** Earthquake, tsunami, volcanic eruption warnings, Weather-related disaster prevention info, Location-optimized alerts, Real-time map interaction, Urgency-based notification sorting, Critical Alerts for imminent danger, Barrier-free design

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| E Plan | $2.49 | per month |
| EE Plan | $4.49 | per month |


### SACHET

[App page](https://appshunter.io/ios/app/sachet/id6443882278)

Receive real-time, geo-targeted disaster alerts and weather forecasts from official government sources. Access vital resources like helpline numbers and safety guidelines in multiple Indian languages.

**Highlights:** Real-time geo-targeted disaster alerts, Weather reports and forecasts, Official government warnings, Helpline numbers and resources, Multi-language support with read-out, Satellite receiver connectivity

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

**In-app purchases:** none


## Frequently asked questions

### Is NERV Disaster Prevention free?

NERV Disaster Prevention is free to download, with in-app purchases available.

### Is SACHET free?

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

### Which has better reviews, NERV Disaster Prevention or SACHET?

NERV Disaster Prevention is rated higher. NERV Disaster Prevention averages 4.7 out of 5 from 47 ratings, while SACHET averages 1.0 from 1 ratings.

### Do NERV Disaster Prevention or SACHET have ads?

Neither NERV Disaster Prevention nor SACHET shows ads.

### Which is updated more often, NERV Disaster Prevention or SACHET?

NERV Disaster Prevention ships an update every 6 weeks, and SACHET every 10 days. Most recently, NERV Disaster Prevention was updated on November 6, 2026 and SACHET on November 7, 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.*