# MEGA地震予測 vs ポタポタクラブ

The clearest difference is in-app purchases: ポタポタクラブ at none against MEGA地震予測's 1. ポタポタクラブ also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. MEGA地震予測 sells 1 in-app purchase, starting at $3.49 per month. ポタポタクラブ asks for nothing beyond the download.

MEGA地震予測 ships an update every 3 months, ポタポタクラブ every 2 months. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | MEGA地震予測 | ポタポタクラブ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 10.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Subscription | — |
| Size | 42 MB | 94 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JESEA](https://appshunter.io/developer/1252972114) | [Club Eco Water](https://appshunter.io/developer/1628232090) |

## What reviewers say

### MEGA地震予測

[App page](https://appshunter.io/ios/app/mega/id1252972115)

This app provides earthquake predictions based on a unique surveying approach. It analyzes data from nationwide electronic reference points and private observation points to detect precursor phenomena. Predictions are visualized by area and updated weekly.

**Highlights:** PUSH notifications for updates, Graph display of electronic reference point fluctuations, Area-specific earthquake predictions, Access to past articles and predictions, Weekly forecast delivery

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MEGA地震予測 | $3.49 | per month |


### ポタポタクラブ

[App page](https://appshunter.io/ios/app/id6499583083)

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

**In-app purchases:** none


## Frequently asked questions

### Is MEGA地震予測 free?

MEGA地震予測 is free to download, with in-app purchases available.

### Is ポタポタクラブ free?

ポタポタクラブ is free to download, with no in-app purchases.

### Do MEGA地震予測 or ポタポタクラブ have ads?

Neither MEGA地震予測 nor ポタポタクラブ shows ads.

### Which is updated more often, MEGA地震予測 or ポタポタクラブ?

MEGA地震予測 ships an update every 3 months, and ポタポタクラブ every 2 months. Most recently, MEGA地震予測 was updated on September 25, 2026 and ポタポタクラブ on September 18, 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.*