# Disaster Prep & Stockpile vs PrepNotify

The clearest difference is ads: PrepNotify at none against Disaster Prep & Stockpile's shown. Disaster Prep & Stockpile's advantage is iOS requirement (16.4 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Disaster Prep & Stockpile sells 2 in-app purchases, starting at $1.99 per month and PrepNotify sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Disaster Prep & Stockpile ships an update every 9 days, PrepNotify every 2 weeks. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Disaster Prep & Stockpile | PrepNotify |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Size | 75 MB | 24 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Jimpei Negishi](https://appshunter.io/developer/1868338438) | [Pei Yang Jhang](https://appshunter.io/developer/6793039246) |

## What reviewers say

### Disaster Prep & Stockpile

[App page](https://appshunter.io/ios/app/disaster-prep-and-stockpile/id6757696537)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月額プラン | $1.99 | per month |
| 年額プラン | $14.99 | per year |


### PrepNotify

[App page](https://appshunter.io/ios/app/prepnotify-supply-tracker/id6793039244)

**Features:** iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One bubble tea a month | $1.99 | per month |
| A year of bubble tea | $14.99 | per year |
| Buy me a bubble tea | $1.99 | one-time |


## Frequently asked questions

### Is Disaster Prep & Stockpile free?

Disaster Prep & Stockpile is free to download, with in-app purchases available.

### Is PrepNotify free?

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

### Do Disaster Prep & Stockpile or PrepNotify have ads?

Disaster Prep & Stockpile shows ads; PrepNotify does not.

### Which is updated more often, Disaster Prep & Stockpile or PrepNotify?

Disaster Prep & Stockpile ships an update every 9 days, and PrepNotify every 2 weeks. Most recently, Disaster Prep & Stockpile was updated on November 5, 2026 and PrepNotify on November 6, 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.*