mrrlens
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Shopify appwhat they say

ECF

ECF: Contact Form Builder

Create custom forms with our Custom Contact Form Builder app. Generate user-friendly forms on your online store with fully responsive.

★★★★★4.9 (43)
$4.99/moBasic$9.99/moPremium$12.99/moAdvanced
Shopify App Store ↗
what mrrlens sees
MRR · Estimated$225–2k
Opportunity—
Buyer threads · 30 d0
“But then we realized it redirects users to malware / virus sites.”
#1 complaint · Bugs/Reliability · 2 of 2 complaints read · analysed Nov 1, 2026 · source

01Revenue

$225–2k

A month · the formula and every input are below

How this range is computed

reviews × installs-per-review × paying share × entry price

  • reviews: 43
  • entry price: $5
  • 7–20 active installs per published review (measured: median 12 on the 20 most-installed apps)
  • 15%–35% of installs on a paid plan

A range from public signals and the listed price, not a claim about the company’s books. Methodology.

Store data from the Shopify App Store listing, refreshed daily. Updated 1 d ago. Listed since 2020.

02Why users leave ECF

Bugs/Reliability2 reviews · 2 of 2

Users report the app redirects visitors to malware/virus sites once per device, hard to notice; reviewer warns against use.

“But then we realized it redirects users to malware / virus sites.” source ↗

Sample: 2 recent complaints (1–3★ reviews) · clustered Nov 1, 2026 · complaints from Apr 2020–Mar 2021, none in the last 24 months — history, not today · each review labelled by a model, quotes verbatim

03How to build a better ECF

Build difficultyLowSimple form builder; main factors are secure hosting, input sanitization, and avoiding malicious third-party redirects.
Three build ideas that answer these complaintsIncluded in the day pass and Pro.
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04Who wants a better ECF

0 buyer threads in the last 30 days name ECF, and 4 more are in the same market.

05Questions about ECF

How much revenue does ECF make?

MRRLens estimates ECF at $225–2k a month (low confidence). The range comes from public signals (reviews × installs-per-review × paying share × entry price), not from the company's books; the formula and its inputs are shown on this page.

What do users complain about most in ECF?

Across 2 recent complaints, the most common is bugs/reliability (2 of 2). Users report the app redirects visitors to malware/virus sites once per device, hard to notice; reviewer warns against use.

What are the best ECF alternatives?

The closest alternatives MRRLens found are Pify AI Contact Form Builder, AI Contact Form Builder by ZB and K: Contact Form Builder. The full list, with why users leave, is on the ECF alternatives page.

See the full x-ray of ECF

Full 1-star breakdown with verbatim quotes, the build blueprint and every live thread — on every product.