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E-Commerce · head to head

Instacart vs OpenCart

Instacart logo

Instacart

E-Commerce

US and Canada grocery delivery and pickup marketplace with a paid membership tier

From
Free
Rated
-
Full reviewWebsite
OpenCart logo

OpenCart

E-Commerce

Self-hosted open source shopping cart written in PHP, released under the MIT licence

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Instacart item prices shown in the app are frequently higher than the same items in the physical store, and this markup is not clearly separated from delivery and service fees at checkout, making true cost comparison difficult.; OpenCart extensions modify core behaviour through an XML patching system, so two modules that patch the same file conflict in ways that surface as broken checkout rather than as an installation error, and resolving that requires a developer reading both patches.
  • They diverge on capability: Instacart covers Multi-retailer marketplace, OpenCart covers MIT licensed source.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Instacart and OpenCart actually diverge.

Attributes where Instacart and OpenCart differ
AttributeInstacartOpenCart
Pricing modelFree to download; item markups plus delivery and service fees per order, optional subscriptionopen-source
PlatformsiOS, Android, WebWeb
FoundedUnknown2009

Identical on both: starting price (Free), free tier (Yes), 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 Instacart

  • Multi-retailer marketplace
  • Instacart+ membership
  • Same-day and scheduled delivery
  • Pickup option
  • Item substitution controls
  • Instacart Ads and retail media

Only in OpenCart

  • MIT licensed source
  • Self-hosted PHP and MySQL
  • No transaction fees
  • Multi-store
  • Extension marketplace
  • Multi-currency and multi-language
  • OCMod modification system
  • Full data access

What people use each for

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

Instacart

  • A household with limited time wanting groceries delivered same day from a familiar supermarket chainnot OpenCart
  • A frequent orderer comparing whether an Instacart+ subscription pays off against per-order feesnot OpenCart
  • Someone using SNAP EBT benefits at a participating retailer through the appnot OpenCart
  • A shopper who wants to order ahead and collect at pickup to avoid the delivery fee entirelynot OpenCart

OpenCart

  • A merchant with volume high enough that a percentage transaction fee costs more than a developernot Instacart
  • An agency building client stores where the client must own the code and the data outrightnot Instacart
  • A store with unusual catalogue or pricing logic that a hosted platform will not permitnot Instacart
  • Selling in a market where the local payment gateway is not supported by the mainstream SaaS platformsnot Instacart

Where each one falls short

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

Instacart

  • Item prices shown in the app are frequently higher than the same items in the physical store, and this markup is not clearly separated from delivery and service fees at checkout, making true cost comparison difficult.
  • Shoppers are a mix of employees and independent contractors depending on market and retailer, and gig-classified shoppers have raised pay and working-condition complaints that have drawn regulatory attention in several US states.
  • The service fee and delivery fee combination means a small grocery order can carry a large proportional surcharge, making Instacart uneconomical for frequent small top-up shops.
  • Item substitutions chosen by a shopper when stock runs out can differ meaningfully from what was ordered, and refund handling for a poor substitution requires customer support intervention.
  • Availability is limited to the US and Canada, and even within those countries, delivery zones and retailer coverage vary block by block in a way that is not obvious until you enter an address.

OpenCart

  • Extensions modify core behaviour through an XML patching system, so two modules that patch the same file conflict in ways that surface as broken checkout rather than as an installation error, and resolving that requires a developer reading both patches.
  • Major version upgrades have broken third party extension compatibility, so moving between them means re-purchasing or re-commissioning modules and effectively rebuilding parts of the store rather than clicking update.
  • Hosting, patching, backups and PCI scope are all your responsibility, so a security update you postpone is a breach you own, and there is no vendor obligation to notify or protect you.
  • Extension quality on the marketplace is uneven and modules are sold as one-off purchases with no guaranteed maintenance, so a module central to your store can simply stop being updated and leave you holding the code.
  • The core project is maintained by a very small team relative to the platforms it competes with, so security fixes, compatibility with new PHP versions and feature work all arrive at a pace you cannot influence or pay to accelerate.

Pricing, plan by plan

Instacart

Free
  • Pay per orderFree
    • Item prices often marked up versus in-store
    • Delivery fee varying by store and delivery window
    • Service fee of roughly 5 percent of order subtotal
  • Instacart+$9.99/month
    • Delivery fees waived on orders over a store minimum
    • Reduced service fees
    • Also offered at a discounted annual rate

OpenCart

Free
  • Open SourceFree
    • Core ecommerce features
    • Free support
    • Extensions available

Which should you pick?

Choose Instacart if

  • You need multi-retailer marketplace.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want instacart+ membership.
Instacart review

Choose OpenCart if

  • You need mit licensed source.
  • You want to start without paying.
  • You also want self-hosted php and mysql.
OpenCart review

Questions people ask

Is Instacart or OpenCart better?
Neither clearly leads. Instacart starts at Free and OpenCart at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Instacart or OpenCart?
Instacart starts at Free and OpenCart at Free.
Does Instacart or OpenCart run on more platforms?
Instacart runs on iOS, Android, Web. OpenCart runs on Web.
Can I use Instacart for free?
Both have a free tier, so you can try either at no cost before committing.
What is Instacart best used for?
Instacart is most often used for a household with limited time wanting groceries delivered same day from a familiar supermarket chain, a frequent orderer comparing whether an instacart+ subscription pays off against per-order fees, someone using snap ebt benefits at a participating retailer through the app, a shopper who wants to order ahead and collect at pickup to avoid the delivery fee entirely. Of those, a household with limited time wanting groceries delivered same day from a familiar supermarket chain and a frequent orderer comparing whether an instacart+ subscription pays off against per-order fees are not what OpenCart is typically brought in for.
What can Instacart do that OpenCart cannot?
Instacart covers Multi-retailer marketplace, Instacart+ membership, Same-day and scheduled delivery, Pickup option. OpenCart covers MIT licensed source, Self-hosted PHP and MySQL, No transaction fees, Multi-store.

Answered from the vendors’ own pages

Instacart: Are Instacart prices the same as in the store?

Often not. Many retailers set higher item prices for Instacart orders than for in-store purchase, on top of delivery and service fees.

OpenCart: Is OpenCart really free?

The software is MIT licensed with no paid edition. The costs are hosting, extensions, and a developer, and for a low volume store those can exceed a SaaS subscription.

Instacart: Does Instacart+ pay for itself?

Only for households ordering often enough that the waived delivery fees exceed the subscription cost; occasional orderers usually do not break even.

OpenCart: Does it charge transaction fees?

No. There is no platform cut and no surcharge for using your own payment gateway, which is the main financial argument for self-hosting at volume.

Instacart: Are Instacart shoppers employees?

It depends on the market and retailer; Instacart uses a mix of directly employed and independent contractor shoppers.

OpenCart: How hard is customisation?

Theme changes are ordinary PHP templates and are approachable. Changing behaviour means the OCMod patching system, which conflicts between extensions and needs a developer.

OpenCart: What is the biggest hidden cost?

Upgrades. Version transitions have broken extension compatibility before, so budget for a partial rebuild rather than assuming updates are routine maintenance.

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