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E-Commerce · head to head

Inventory Lab vs Memberful

Inventory Lab logo

Inventory Lab

E-Commerce

FBA inventory management made simple

From
Free
Rated
-
Full reviewWebsite
Memberful logo

Memberful

E-Commerce

Membership platform for creators to sell subscriptions, courses and gated content

From
$49/month
Rated
-
Full reviewWebsite

The short version

  • Only Inventory Lab has a free tier, so it costs nothing to try first.
  • Each has a real cost: Inventory Lab inventoryLab is no longer sold standalone and is now bundled into Three Colts' Seller 365 plans starting at $69 per month for a single user, rising to $199 per month for the Pro tier; Memberful charges a 4.9% transaction fee on top of the flat monthly fee on the Standard plan.
  • They diverge on capability: Inventory Lab covers FBA inventory tracking, Memberful covers Membership checkout.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Inventory Lab and Memberful actually diverge.

Attributes where Inventory Lab and Memberful differ
AttributeInventory LabMemberful
Starting priceFree$49/month
Free tierYesNo
PlatformsWebweb, api
Founded20112013

Identical on both: pricing model (subscription), user rating (Not yet rated), category (E-Commerce).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Inventory Lab

  • FBA inventory tracking
  • Repricing automation
  • Price monitoring
  • Sales analytics
  • Profit calculations
  • Supplier management
  • Alerts and notifications
  • Forecasting tools

Only in Memberful

  • Membership checkout
  • Flexible subscriptions
  • Member management
  • Landing page builder
  • Dynamic paywalls
  • Third-party integrations

What people use each for

The jobs each tool is most often brought in to do.

Inventory Lab

  • Amazon seller managementnot Memberful
  • multi-channel resellingnot Memberful
  • inventory trackingnot Memberful

Memberful

  • Selling paid membership subscriptions from an existing websitenot Inventory Lab
  • Gating podcast, newsletter or course content behind a paywallnot Inventory Lab
  • Running a WordPress site with paid member-only contentnot Inventory Lab
  • Offering one-time purchases alongside recurring membershipsnot Inventory Lab

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Inventory Lab

  • InventoryLab is no longer sold standalone and is now bundled into Three Colts' Seller 365 plans starting at $69 per month for a single user, rising to $199 per month for the Pro tier
  • Multichannel listing requires the separate UniCon add-on, priced from $49 to $449 per month depending on tier

Memberful

  • Charges a 4.9% transaction fee on top of the flat monthly fee on the Standard plan.
  • Requires a separate Stripe account, adding setup complexity compared to all-in-one checkout platforms.
  • Lacks built-in course-hosting depth found in dedicated learning management platforms.
  • No free plan beyond the pre-launch trial period; charges begin once payments go live.

Pricing, plan by plan

Inventory Lab

Free
  • Standard$69/month
    • access to 10 tools
    • 1 user account
    • designed for independent resellers
  • Teams$129/month
    • all 10 tools
    • up to 10 users
    • shared workflows and collaboration
  • Pro$199/month
    • all pro versions of 10 tools
    • up to 10 users
    • premium support under 30-minute response time
  • Enterprise$null/custom
    • more than 10 users
    • custom terms

Memberful

$49/month
  • Standard$49/month
    • 4.9% transaction fee
    • Full platform access
    • Free until you go live
  • Enterprise$undefined/mo
    • Custom volume-based rates
    • Premium services and success management
    • Dedicated migration support

Which should you pick?

Choose Inventory Lab if

  • You need fba inventory tracking.
  • You want to start without paying.
  • You also want repricing automation.
Inventory Lab review

Choose Memberful if

  • You need membership checkout.
  • You work on web, api.
  • You also want flexible subscriptions.
Memberful review

Questions people ask

Is Inventory Lab or Memberful better?
Neither clearly leads. Inventory Lab starts at Free and Memberful at $49/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Inventory Lab or Memberful?
Inventory Lab has a free tier; the other does not. Paid plans start at Free for Inventory Lab and $49/month for Memberful.
Does Inventory Lab or Memberful run on more platforms?
Inventory Lab runs on Web. Memberful runs on web, api.
Can I use Inventory Lab for free?
Yes. Inventory Lab has a free tier, so you can try it without paying. Memberful starts at $49/month.
What is Inventory Lab best used for?
Inventory Lab is most often used for amazon seller management, multi-channel reselling, inventory tracking. Of those, amazon seller management and multi-channel reselling are not what Memberful is typically brought in for.
What can Inventory Lab do that Memberful cannot?
Inventory Lab covers FBA inventory tracking, Repricing automation, Price monitoring, Sales analytics. Memberful covers Membership checkout, Flexible subscriptions, Member management, Landing page builder.

Answered from the vendors’ own pages

Inventory Lab: What is the free trial period for Inventory Lab?

Inventory Lab offers a 14-day free trial, with bonus days awarded when connecting Amazon accounts.

Source
Memberful: What does Memberful cost?

Memberful's Standard plan costs $49/month plus a 4.9% transaction fee, while larger organizations can get custom volume-based rates on the Enterprise plan.

Source
Inventory Lab: Can I save money on Inventory Lab with annual billing?

Yes, annual billing saves money: Standard saves $48/year, Teams saves $120/year, and Pro saves $192/year compared to monthly billing.

Source
Memberful: Is there a free plan, and what are its limits?

Memberful can be used for free while setting up a membership site, with no charges incurred until the creator goes live and starts accepting payments.

Source
Inventory Lab: Is there an add-on to use Inventory Lab on channels beyond Amazon?

Yes, the UniCon multichannel add-on is available starting at $49/month for expanding beyond Amazon.

Source
Memberful: What does Memberful integrate with?

Memberful integrates with WordPress, Mailchimp, Discord and Kit, among other tools, to connect membership data with existing sites and marketing systems.

Source
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