FJ Functions and Promo Builder for Shopify

FJ Functions and Promo Builder

Build advanced Functions for discounts, bundles, promos & more

Rating

5.0

feedback

8

Reviews

chart

#3,314

Shopify

Reviews Over Time

App Ranking

Time spent using app

  • Less than an hour
    0%
  • Less than a day
    0%
  • Less than a month
    38%
  • Less than a year
    12%
  • More than a year
    0%

Reviews Summary

Users are highly satisfied with the app, giving it a perfect 5-star rating. The app is praised for its ease of use, responsiveness of the team, and exceptional performance. Users appreciate the seamless transition from Shopify Scripts and the ability to set up custom bundle discounts effortlessly. The support team is highlighted for going above and beyond to assist users with more complex setups. Overall, the app is considered an outstanding alternative to other discount apps available on Shopify, making it highly recommended by users.

Highlights

Ease of use and user-friendly interface
Responsive and helpful support team
Seamless transition from Shopify Scripts
Custom bundle discounts setup
Exceptional performance

Rating Breakdown

  • 5
    100% (8 ratings)
  • 4
    0% (0 ratings)
  • 3
    0% (0 ratings)
  • 2
    0% (0 ratings)
  • 1
    0% (0 ratings)

Reviews with Text

  • 100% (8)
Review RSS Feed Review RSS Feed

All reviews

5 / 5 Share

Jan. 8, 2026

Great app that's super user friendly. They also have the best support team!

Store

Rails

Using app

--

Total reviews

2

Average rating

5.0

5 / 5 Share

Jan. 8, 2026

We’ve run several discounting functions through this app, including more complex logic that we previously handled with Shopify Scripts. As we transition fully to Shopify Functions, FJ makes it easy to manage and maintain these promotions without needing ongoing developer support. The interface is straightforward, and it gives us confidence that we can continue evolving our discount strategy without custom code. It’s been especially helpful as Scripts are deprecated and Functions become the standard. Great tool for teams that want powerful discount logic without adding too much dev overhead.

Store

OUAI

Using app

--

Total reviews

1

Average rating

5.0

5 / 5 Share

Jan. 8, 2026

If you need serious control over discounts, Function Junction is the way to go. It unlocks advanced Shopify Functions without sacrificing performance, and it’s become our go-to solution for complex promo rules.

Using app

--

Total reviews

4

Average rating

5.0

5 / 5 Share

Jan. 7, 2026

Function Junction has been a great replacement for Shopify Scripts. It gives us far more control over complex discount logic while staying fast and reliable. Setup was straightforward and it’s become a core part of our store’s promo stack.

Using app

--

Total reviews

8

Average rating

5.0

5 / 5 Share

Nov. 25, 2025

Incredibly helpful with getting the app installed and ready in-time for our sale (with 1 day notice)! Performance of the app has been fantastic.

Using app

15 days

Total reviews

3

Average rating

5.0

All reviews

Sign up to receive AppNavigator updates

Find out when we add keyword-monitoring, review RSS feeds and more