FBAToolkit vs Seller Siren
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FBAToolkit
This app offers a suite of tools for Amazon sellers using Fulfillment By Amazon (FBA). It features product analysis, allowing users to scan barcodes or enter them manually to generate reports on offers, sales rates, profit, and markup to aid purchasing decisions.
- FBA seller tools
- Product analysis
- Barcode scanning
- Sales rate estimation
- Profit calculation
- Markup calculation
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FBAToolkit aims to provide a comprehensive set of tools for sellers using FBA (Fulfillment By Amazon). The main feature is the Product Analysis. You can scan a barcode with your cellphone's camera or type one manually and it'll generate a report with information that'll simplify your purchasing decisions (current offers, estimated sales rate, profit, markup).
Seller Siren
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.
- Live Amazon sales push notifications
- Optional sound effects for sales
- Customizable notification filters (SKU, marketplace, sales count)
- View detailed sales dashboard
- Worldwide marketplace support
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Seller Siren sends you live, instant push notifications whenever you make a sale on Amazon, along with an optional sound effect. Cha-Ching! Save time by not needing to open Seller Central to view your Amazon sales data. In fact, you don’t even need to unlock your phone! Simply view the Seller Siren push notifications on your home screen. Tired of constantly checking and refreshing the Seller Central app to see if you made any new sales? You can also add a bit of fun to your sales by adding one of our 20 optional sound effects. Cha-Ching! Notifications are fully customizable so you only get the updates you want. Filter by specific SKUs or marketplaces. You can also only get alerts every Xth sale. (If you don't want a notification for EVERY sale, but rather every 50th sale for example, you can do it.) You can also customize notifications to include only the item sold, or add sales amount/quantity data, and total sales for the day, week, or month. You can tap on a notification to open the app and view a more detailed sales dashboard within the app. Seller Siren is available in all marketplaces worldwide. App Features: - Get Live Push Notifications When Amazon Sales are Made. - Choose from Over 20 Optional Sound Effects. Cha-Ching! - Fully customizable so you only get the Notifications You Want. - Filter Notifications by SKU. (Get notified for some products but not others.) - Filter by Number of Sales. (Only get notified every 10th, 20th, 100th sale, etc) - Filter by Marketplace. (Only get notified for Canada, EU, etc) Privacy Policy: https://www.sellersiren.com/privacy-policy Terms of Use (Standard Apple License): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: FBAToolkit at 5.0 against Seller Siren's 4.3. FBAToolkit also leads on in-app purchases (none vs 4). Seller Siren's advantage is update cadence (every 5 weeks vs every 11 months) and review sentiment (51% vs 29%). On price, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Seller Siren sells 4 in-app purchases, starting at $5.99 per month. FBAToolkit asks for nothing beyond the download.
FBAToolkit holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Seller Siren has 128 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 29% of FBAToolkit's written reviews are positive against 51% of Seller Siren's, so the app with the better star average is not the one people write more warmly about.
FBAToolkit ships an update every 11 months, Seller Siren every 5 weeks. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.
| Parameter | FBAToolkit | Seller Siren |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.3 (128 ratings) |
| Positive reviews | 28.6% of reviews | 51.2% of reviews — better |
| Number of ratings | 2 | 128 — better |
| Update frequency | Every 11 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 15 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Pathfinding S.A. | Jason Childs |
Customer experience
FBAToolkit
Seller Siren
Bugs and requests
FBAToolkit
Not enough reviews yet to summarise bugs or requests.
Seller Siren
Reported bugs
8 issues- App not working / stops working
- Login screen issues (asking to sign up again)
- Notifications are delayed
- Sale price inaccurate
- App deactivates frequently
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- Cannot connect to account / invalid token errors
- App not updated for a long time
- Visual bugs
Requested features
5 requests- 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
In-app purchases
FBAToolkit
No in-app purchases
Seller Siren
- Monthly Subscription14 Days trial$5.991 Month
- Monthly Subscription (Promo)1 Month trial$5.991 Month
- Yearly Subscription14 Days trial$49.991 Year
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- Yearly Subscription (Promo)1 Month trial$49.991 Year
Questions
Is FBAToolkit free?
Is Seller Siren free?
Which has better reviews, FBAToolkit or Seller Siren?
Do FBAToolkit or Seller Siren have ads?
Which is updated more often, FBAToolkit or Seller Siren?
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