Short answer
For booking at your own net profit floor, the Amazon Relay extension to use is NudoIQ, which adds net profit per load and scorecard dispute letters for $49.99 a month. The other main extensions are LoadFetcher and Rocket Relay.
Why You Need a Relay Extension
Amazon says the Relay load board auto-refreshes new spot freight matches every 30 seconds, and Relay now shows its own auto-refresh control. Good loads can still go fast, and watching the board all day isn't practical if you're driving, managing dispatch or running your business. An extension reloads the board for you and alerts you or books loads by your rules, so you don't have to watch the screen.
Besides the bigger names, there are a dozen or so smaller refreshers in the category. Understanding what to look for helps you pick the right one.
Looking at one tool, not a list? See our Amazon Relay Chrome extension guide for features and setup, and our Amazon Relay refresher guide for speed and modes.
What to Look For in a Relay Extension
Refresh Control: Can you set the interval (how often it reloads) yourself, and start or stop it right from the load board?
Booking Rules: Can you set rules to book only certain loads? Look for the ability to filter by lane, price range, load type, distance, and equipment. A tool that books only loads matching your rules books fewer loads you didn't want.
Profit Floor and Max-Books Cap: Does it let you set a minimum profit and a maximum number of books? These guardrails protect you from booking loads you didn't intend to take. A profit floor means "don't book anything below $X net profit." A max-books cap means "stop booking once I've booked 5 loads."
Rate Data and Decision Support: Does it show you lane history, net profit per load, or other rate context? Or does it just alert you when a load posts and let you decide? Tools that surface rate data help you make faster decisions.
Alerts: Can it alert you when a load matching your rules posts? NudoIQ sounds an alert on the page and sends a Telegram message to your phone if you connect Telegram.
Data Handling and Privacy: Where does your data go? Some tools store booking rules on your computer only. Others upload to a server. Ask yourself: do I want my lane preferences, profit targets, and booking history on someone else's server?
Updates and Support: Is the tool actively maintained? An extension that hasn't been updated in months might break when Chrome or Relay changes. Look for tools with recent updates and a way to report problems.
Cost: Free tools exist. Paid tools add more features. Decide whether the features are worth the cost for your operation.
The Top Extensions
LoadFetcher
LoadFetcher lists auto refresh, load pricing and history, backhaul search, Post Truck Manager and Telegram alerts. Not listed: automatic booking, net profit per load or scorecard dispute letters (checked October 4, 2026).
Auto booking, net profit and free trials in one table: NudoIQ vs LoadFetcher.
Rocket Relay and Rocket Pro
Rocket Relay, from West Wanted (listed as Relay Auto Booker Refresher Rocket Pro), advertises auto-refresh, alerts, FastBook, Pro auto-booking by payout and $/mile, and Post A Truck tools. Not listed: a net profit floor after your costs, net profit per load or scorecard dispute letters (checked October 9, 2026).
SwiftRelay and FlashRelay
SwiftRelay, from Premier IT Solutions, refreshes the board, and auto-books on its Pro plan and up. FlashRelay lists auto booking and Telegram alerts. Its most-used Chrome Web Store listing was last updated December 3, 2024 (version 2024.5.9, checked October 16, 2026). Neither lists a net profit floor, net profit per load or scorecard dispute letters (SwiftRelay checked October 9, 2026, FlashRelay October 5, 2026).
Cardamon
Cardamon, from Cardamon Inc., lists auto-refresh, load filters, payout-change alerts and Pro auto-booking. Not listed: a net profit floor after your costs, net profit per load or scorecard dispute letters (checked October 16, 2026).
NudoIQ
NudoIQ is a browser extension that runs inside the Relay load board and includes every feature in one monthly subscription. Try it free for 7 days. No card required. Only $49.99 after the trial is over.
Refresh Control: Set the interval and press START or STOP on the NudoIQ bar.
Three Booking Modes: A match clears your Min Net Profit and Min $/Mile. ALERT sounds an alert on the page when one appears. SEARCH quietly refreshes the board and floats new and price-up matches. AUTOBOOK books matches, up to your Max books. Lane and equipment come from Relay.
Lane Intelligence: For each load, NudoIQ shows the 90-day rate history for that lane, a target rate, an expected range, and a confidence level. Example: "$483 target next to a $407 board price." This is decision support, not a guarantee: Amazon rates change based on season, time of day, volume, and other factors.
Net Profit Per Load: Instead of just the posted rate, NudoIQ calculates the dollars you keep after subtracting driver pay, fuel, maintenance, and deadhead to pickup. You see the net profit and net $/mile for every load.
Scorecard Dispute Drafting: NudoIQ drafts a dispute letter from the violation on your Relay scorecard. You review, edit, and submit. Amazon makes the final decision.
Backhaul Finder: Search for loads from your current drop-off back toward home within your radius and time window. Sort by total pay, rate per mile, pickup time, or distance home.
Post A Truck Helper: When posting availability, NudoIQ shows origin, destination, distance, and board price alongside your minimums, then posts with one click.
Other Features: Telegram alerts if you connect Telegram.
Best for: Carriers who want a full-featured refresher, rate history, profit calculation, dispute support, and backhaul finding all in one tool.
You can see what NudoIQ adds to your Relay board, and how to set it up, on our NudoIQ Chrome extension page.
Comparison Table
| Feature | NudoIQ | LoadFetcher | Rocket Relay | SwiftRelay | FlashRelay |
|---|---|---|---|---|---|
| Auto-refresh | |||||
| Auto booking | Pro | Pro and up | |||
| Profit floor, max cap | Trip cap only, Pro | ||||
| Lane rate history | |||||
| Net profit per load | |||||
| Scorecard dispute drafting | |||||
| Backhaul finder | Plus plan | ||||
| Post A Truck helper | Pro | ||||
| Telegram alerts | Plus plan |
Shows features NudoIQ offers. Check: advertised on its store listing or website. Dash: not advertised.
Checked on: LoadFetcher October 4, 2026. Rocket Relay and SwiftRelay listings and prices October 9, 2026, ratings October 5, 2026. FlashRelay October 5, 2026.
How to Choose
If you want loads booked for you at your number: NudoIQ's AutoBook books only loads that clear your Min Net Profit, up to your Max books.
If you want rate history and profit calculation: NudoIQ includes both. The 7-day free trial lets you test whether the extra features save you time.
If you want everything in one place: NudoIQ is built for carriers who also want to dispute scorecards, find backhauls, and post availability: all from the same extension.
All of these tools are independent of Amazon Relay. They're browser extensions published by third parties. The carrier is responsible for its Relay account and for following Relay's terms, so read them before you install any extension.
Testing and Switching
You can install multiple extensions and test them before deciding. Just remember that running two refresher extensions at the same time might cause conflicts. Test one, then another.
If you're currently using one extension and want to test NudoIQ, install NudoIQ, try the 7-day free trial, and see if the extra features (rate history, profit calculation, dispute drafting, backhaul finding) are worth $49.99 a month. Cancel anytime from your Stripe portal if they're not.
What Makes a Good Extension Choice
A good extension for you is one that:
- Automates what you do manually: If you refresh constantly, it should refresh for you. If you struggle to judge rates, it should show you rate history.
- Includes guardrails: Set a profit floor, set a max-books cap, and the tool respects those limits so you don't accidentally book unprofitable work.
- Stays updated: Recent updates mean the developers are actively maintaining it and fixing issues.
- Respects your data: Whether it stores locally or on a server, you should know what happens to your booking preferences and history.
- Fits your budget: Free is good if it does what you need. Paid is worth it if the extra features speed up your decisions.
Why NudoIQ Stands Out
NudoIQ does two things no other Relay extension lists: AutoBook that books only to your own minimum net profit after your own costs, and scorecard dispute letters (checked October 5, 2026, across 52 other Relay listings on the Chrome Web Store). No other listing shows net profit per load after your own driver pay, fuel, maintenance and deadhead.
The extension is rated 5.0 on the Chrome Web Store and used by 300+ carriers. It costs $49.99 a month for every feature. Try it free for 7 days. No card required. Only $49.99 after the trial is over.
For a side-by-side of NudoIQ and six other Relay extensions, with prices and what each one lists publicly (checked October 5, 2026), see why carriers choose NudoIQ.