# Mozillion vs Restockalert

The clearest difference is in-app purchases: Mozillion at none against Restockalert's 4. Mozillion also leads on iOS requirement (15.1 vs 17.0). Restockalert's advantage is update cadence (every 6 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. Restockalert sells 4 in-app purchases, starting at $3.99 per month. Mozillion asks for nothing beyond the download.

Mozillion ships an update monthly, Restockalert every 6 days. Both last shipped on October 16, 2026.

## The numbers

| Metric | Mozillion | Restockalert |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 6 days** |
| Monetization | — | Freemium |
| Size | 30 MB | 17 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Mozillion](https://appshunter.io/developer/1867017862) | [RestockAlert](https://appshunter.io/developer/6793626378) |

## What reviewers say

### Mozillion

[App page](https://appshunter.io/ios/app/mozillion/id6757446641)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Restockalert

[App page](https://appshunter.io/ios/app/restockalert/id6793626376)

This app monitors product pages for sold-out items, notifying you instantly when your desired size becomes available. Simply paste a link, select your size, and receive a direct link to purchase when it's back in stock. It supports numerous popular retailers and offers various alert channels.

**Highlights:** Automatic restock monitoring, Direct purchase links, Supports many retailers, Email, Telegram, and Push alerts, Size-specific tracking, Live dashboard of tracked items

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Serious Plan | $3.99 | per month |
| Pro Plan | $7.99 | per month |
| Serious Plan | $29.99 | per year |
| Pro Plan | $59.99 | per year |


## Frequently asked questions

### Is Mozillion free?

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

### Is Restockalert free?

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

### Do Mozillion or Restockalert have ads?

Neither Mozillion nor Restockalert shows ads.

### Which is updated more often, Mozillion or Restockalert?

Mozillion ships an update monthly, and Restockalert every 6 days. Most recently, Mozillion was updated on October 16, 2026 and Restockalert on October 16, 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.*