1
K
Klaviyo
61% of Flex stores
2
G
Geolocation
33% of Flex stores
3
T
TrustShop: Product Reviews
32% of Flex stores
4
S
Shop
27% of Flex stores
5
G
GOAFFPRO ‑ Affiliate Marketing
23% of Flex stores
6
J
Judge.me
21% of Flex stores
7
G
Gorgias
15% of Flex stores
8
i
instafeed
15% of Flex stores
9
m
mailchimp
15% of Flex stores
10
Y
Yotpo
15% of Flex stores
11
S
Simprosys Google Shopping Feed
13% of Flex stores
12
T
Triple Whale
10% of Flex stores
13
l
loox
10% of Flex stores
14
s
shogun
9% of Flex stores
15
g
google
8% of Flex stores
16
L
Loop Returns & Exchanges
8% of Flex stores
17
p
pagefly
8% of Flex stores
18
o
omnisend
8% of Flex stores
19
b
back-in-stock-restock-alerts
8% of Flex stores
20
S
SMSBump
7% of Flex stores
App categories used by Flex stores
Other
20
Frequently Asked Questions
What apps do most Flex stores use?
Klaviyo is the most common app among Flex stores, installed on 61% of the 100 stores we analyzed. Geolocation (33%) and TrustShop: Product Reviews (32%) are also widely used.
Are these app recommendations specific to Flex?
Yes. These apps are ranked by how frequently they appear on real Shopify stores that run the Flex theme — not by general popularity. Stores running Flex tend to have similar needs, so this list reflects what actually works for Flex merchants.
Do all these apps work with Flex?
All apps listed are actively used by Flex stores, which means they're compatible. However, always check each app's requirements and test in a dev environment before going live.
Which free apps are most popular with Flex stores?
Most top apps used by Flex stores are paid tools. Check individual app pages for pricing details.
