# 地灾智防 vs Potdeco

The clearest difference is update cadence: 地灾智防 at every 11 days against Potdeco's every 7 months. 地灾智防 also leads on iOS requirement (9.0 vs 11.0). 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.

地灾智防 ships an update every 11 days, Potdeco every 7 months. The most recent releases landed on October 11, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | 地灾智防 | Potdeco |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 7 months |
| Size | 29 MB | 33 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zhejiang Provincial Institute of Geological Environmental Monitoring](https://appshunter.io/developer/1240028704) | [Tom Rombaut](https://appshunter.io/developer/1199569601) |

## What reviewers say

### 地灾智防

[App page](https://appshunter.io/ios/app/id1240028705)

**Features:** macOS Compatibility

**In-app purchases:** none


### Potdeco

[App page](https://appshunter.io/ios/app/potdeco/id1438455380)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 地灾智防 free?

地灾智防 is free to download, with no in-app purchases.

### Is Potdeco free?

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

### Do 地灾智防 or Potdeco have ads?

Neither 地灾智防 nor Potdeco shows ads.

### Which is updated more often, 地灾智防 or Potdeco?

地灾智防 ships an update every 11 days, and Potdeco every 7 months. Most recently, 地灾智防 was updated on October 11, 2026 and Potdeco on August 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*