Comparison

FBAToolkit vs Seller Siren

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • FBA seller tools
  • Product analysis
  • Barcode scanning
  • Sales rate estimation
  • Profit calculation
  • Markup calculation
Features
Read full description

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).

About

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.

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
Read full description

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

FBAToolkit2 screens
Seller Siren4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
FBAToolkit versus Seller Siren: the parameters behind the verdict, then further details
ParameterFBAToolkitSeller Siren
PriceFreeFree
Rating5.0 (2 ratings) — better4.3 (128 ratings)
Positive reviews28.6% of reviews51.2% of reviews — better
Number of ratings2128 — better
Update frequencyEvery 11 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size15 MB8 MB
Age rating4+4+
DeveloperPathfinding S.A.Jason Childs

Customer experience

FBAToolkit

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive28.6%
Neutral0.0%
Negative71.4%

Seller Siren

All ratings127 ratings
Positive82.7%
Neutral2.4%
Negative15.0%
Written reviews43 reviews
Positive51.2%
Neutral2.3%
Negative46.5%

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
Show 3 more
  • 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

None

FBAToolkit

No in-app purchases

4 purchases

Seller Siren

Subscriptions4
  • Monthly Subscription14 Days trial$5.991 Month
  • Monthly Subscription (Promo)1 Month trial$5.991 Month
  • Yearly Subscription14 Days trial$49.991 Year
Show 1 more
  • Yearly Subscription (Promo)1 Month trial$49.991 Year

Questions

Is FBAToolkit free?
FBAToolkit is free to download, with no in-app purchases.
Is Seller Siren free?
Seller Siren is free to download, with in-app purchases available.
Which has better reviews, FBAToolkit or Seller Siren?
FBAToolkit is rated higher. FBAToolkit averages 5.0 out of 5 from 2 ratings, while Seller Siren averages 4.3 from 128 ratings.
Do FBAToolkit or Seller Siren have ads?
Neither FBAToolkit nor Seller Siren shows ads.
Which is updated more often, FBAToolkit or Seller Siren?
FBAToolkit ships an update every 11 months, and Seller Siren every 5 weeks. Most recently, FBAToolkit was updated on October 24, 2026 and Seller Siren on October 26, 2026.

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