# MGP Tsunamis vs DecidePeru

The clearest difference is update cadence: DecidePeru at every 4 days against MGP Tsunamis's fortnightly. 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.

MGP Tsunamis ships an update fortnightly, DecidePeru every 4 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | MGP Tsunamis | DecidePeru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/mgp-tsunamis/id1073374799/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 63.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free | — |
| Size | 188 MB | 10 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | +4 | 4+ |
| Developer | [Marina de Guerra del Perú](https://appshunter.io/developer/1073374798) | [Unholster](https://appshunter.io/developer/405114992) |

## What reviewers say

### MGP Tsunamis

[App page](https://appshunter.io/ios/app/mgp-tsunamis/id1073374799)

This app provides real-time tsunami inundation zone maps for the Peruvian coast, based on seismic simulations. It also offers national seismic reports, downloadable flood maps, and essential tsunami prevention tips and information.

**Highlights:** Tsunami inundation zone visualization, National seismic reports, Downloadable flood maps, Tsunami prevention tips, Informative videos

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

**In-app purchases:** none


### DecidePeru

[App page](https://appshunter.io/ios/app/decideperu/id6760347213)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MGP Tsunamis free?

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

### Is DecidePeru free?

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

### Do MGP Tsunamis or DecidePeru have ads?

Neither MGP Tsunamis nor DecidePeru shows ads.

### Which is updated more often, MGP Tsunamis or DecidePeru?

MGP Tsunamis ships an update fortnightly, and DecidePeru every 4 days. Most recently, MGP Tsunamis was updated on October 24, 2026 and DecidePeru on October 24, 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.*