# Seller Siren vs DataFuel

The clearest difference is in-app purchases: DataFuel at none against Seller Siren's 4. Seller Siren's advantage is iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Seller Siren sells 4 in-app purchases, starting at $5.99 per month. DataFuel asks for nothing beyond the download.

Seller Siren ships an update every 5 weeks, DataFuel monthly. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Seller Siren | DataFuel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (128 ratings)](https://appshunter.io/ios/app/seller-siren/id1406513010/reviews)** | — |
| Number of ratings | **128** | — |
| Positive reviews | 51.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 8 MB | 44 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jason Childs](https://appshunter.io/developer/1406513009) | [DATAFUEL LABS PRIVATE LIMITED](https://appshunter.io/developer/6795230806) |

## What reviewers say

### Seller Siren

[App page](https://appshunter.io/ios/app/seller-siren/id1406513010)

Receive instant push notifications for Amazon sales directly on your phone, with optional sound effects. Avoid constantly checking Seller Central and customize alerts by SKU, marketplace, or sales volume. View detailed sales data within the app.

**Highlights:** Live Amazon sales push notifications, Optional sound effects for sales, Customizable notification filters (SKU, marketplace, sales count), View detailed sales dashboard, Worldwide marketplace support

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $5.99 | per month |
| Monthly Subscription (Promo) | $5.99 | per month |
| Yearly Subscription | $49.99 | per year |
| Yearly Subscription (Promo) | $49.99 | per year |

**What reviewers like**

- 🔔 Instant sale notifications
- 🎶 Fun notification sounds (Cha-Ching!)
- 🌍 Supports all marketplaces worldwide
- 📊 Provides sales data (daily/weekly/monthly totals)
- 📸 Includes product images in notifications

**What reviewers complain about**

- 💸 Too expensive / Outrageous pricing
- 💰 Significant price increases
- 🚫 Login issues / Can't access app
- 📉 Unreliable / Works intermittently
- ⏳ Delayed notifications

**Reported bugs**

- App not working / stops working
- Login screen issues (asking to sign up again)
- Notifications are delayed
- Sale price inaccurate
- App deactivates frequently

**Requested features**

- Improve notification accuracy and speed
- More customization for alerts
- Better support responsiveness
- Grandfathering in existing users for subscription changes
- Improve the 'Cha-Ching!' sound quality


### DataFuel

[App page](https://appshunter.io/ios/app/datafuel/id6795230804)

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

**In-app purchases:** none


## Frequently asked questions

### Is Seller Siren free?

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

### Is DataFuel free?

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

### Do Seller Siren or DataFuel have ads?

Neither Seller Siren nor DataFuel shows ads.

### Which is updated more often, Seller Siren or DataFuel?

Seller Siren ships an update every 5 weeks, and DataFuel monthly. Most recently, Seller Siren was updated on October 26, 2026 and DataFuel on October 25, 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.*