WP Simple Pay is a solid plugin — if the only payment company you’ll ever use is Stripe. The moment you want PayPal for the customers who insist on it, Mollie for European methods, or Paystack for African markets, you’ve hit its ceiling: WP Simple Pay is a Stripe plugin, by design.
That’s the main reason people search for a WP Simple Pay alternative, and it’s the first thing WP Smart Pay does differently. It’s a full Stripe integration for WordPress and a multi-gateway payment plugin — Stripe, PayPal, Mollie, Paystack, Razorpay, and more, behind the same drag-and-drop payment forms.
In this comparison we’ll look at where the two plugins genuinely differ, where they’re equivalent, and who should honestly stick with WP Simple Pay.
The Short Version
| WP Smart Pay | WP Simple Pay | |
|---|---|---|
| Payment gateways | Stripe, PayPal, Mollie, Paystack, Razorpay + more | Stripe only |
| Payment forms | Drag-and-drop Gutenberg blocks | Form templates |
| Subscriptions & recurring | Yes (Pro) | Yes (Pro) |
| Donation campaigns with goals | Yes | Payment forms only — no campaigns |
| Invoicing from WordPress | Yes, with status tracking | No built-in invoicing |
| AI agent control (MCP + CLI) | Yes — Claude, ChatGPT, Cursor | No |
| Free version | Yes (PayPal Standard + manual payments) | Yes (Stripe, with a platform fee on free-tier payments) |
Where WP Smart Pay Wins
1. You’re Not Married to Stripe
Stripe is excellent — until it isn’t available in your country, suspends an account, or simply isn’t what your customers use. With WP Smart Pay you connect the gateway that fits your market and switch later without rebuilding your forms. If most of your buyers are in the Netherlands, run Mollie and offer iDEAL. Selling in Lagos? Paystack. Your forms, products, and customer records stay put.
2. Real Donation Campaigns, Not Just Payment Forms
WP Simple Pay can take a donation the way it takes any payment. WP Smart Pay treats fundraising as a first-class feature: campaigns with goals and progress bars, suggested amounts, recurring giving, donor management, and PDF receipts. If donations are part of your model — nonprofits, creators, community projects — this is the deciding difference.
3. Invoices Without Another Plugin
WP Smart Pay creates, sends, and tracks invoices from the WordPress admin — draft, sent, paid, overdue — with your logo and business details. With WP Simple Pay you’d bolt on a separate invoicing tool.
4. Your AI Agent Can Run It
This one has no equivalent anywhere in the WP Simple Pay world: WP Smart Pay ships an MCP server and CLI, so Claude, ChatGPT, or Cursor can build and manage your payment forms and campaigns from a prompt. “Create a $29/month membership form with a free trial” is a sentence, not a settings safari.
Where WP Simple Pay Holds Its Own
Honesty matters in a comparison you found on the competitor’s blog, so:
- Stripe depth. As a Stripe-only plugin, WP Simple Pay exposes some Stripe-specific niceties very directly. If you’re deeply invested in Stripe’s ecosystem and want nothing else, that focus shows.
- Maturity and install base. WP Simple Pay has been around a long time, with a large user base and extensive documentation.
- Buy-now-pay-later options. Its Stripe integration surfaces BNPL methods like Klarna and Affirm, which matter for higher-ticket sales.
If that list covers everything you need and you’ll never leave Stripe, WP Simple Pay is a reasonable choice. The switching argument starts the day you need a second gateway, a fundraising campaign, or an invoice.
Pricing
Both plugins have free versions and paid tiers, and both change pricing often enough that quoting numbers here would age badly — check the current pricing pages. Two structural differences worth knowing:
- WP Simple Pay’s free version applies an additional platform fee to payments; upgrading removes it. WP Smart Pay adds no per-transaction platform fee of its own.
- WP Smart Pay’s free version uses PayPal Standard; Stripe is part of Pro. WP Simple Pay’s free version is Stripe-only.
So the free tiers are mirror images: pick the one whose free gateway matches how you get paid today, and compare Pro pricing for the long run.
Frequently Asked Questions
Is WP Smart Pay a drop-in replacement for WP Simple Pay? There’s no automated migration, but rebuilding payment forms takes minutes with Gutenberg blocks, and your Stripe account carries over untouched — customers and subscriptions live in Stripe, not the plugin.
Can I keep using Stripe if I switch? Yes. Stripe support in WP Smart Pay Pro covers one-time payments, subscriptions, and donations, with Apple Pay and Google Pay through Stripe’s checkout.
Which is better for a nonprofit? WP Smart Pay, and it isn’t close — campaign goals, recurring giving, donor tracking, and receipts are built in. See the WordPress donation plugin page for the full toolkit.
Bottom Line
Choose WP Simple Pay if you want a Stripe-only tool and nothing more. Choose WP Smart Pay if you want the same Stripe capability plus the freedom to add gateways, run donation campaigns, send invoices, and let your AI agent do the clicking. The free version is on wordpress.org — try it against your current setup this afternoon.
