Monthly and yearly tiers
Define plans in app/subscriptions.php with a Stripe price ID, access level and per-period credit allowance. Checkout drops the customer onto the right plan; the dashboard reads their level on every request.
Launch a subscription
SaaS this week.
Stripe-powered tiers, access levels, and monthly credits gating a left-sidebar member app — for SaaS products and paid memberships/communities alike. Passwordless auth and a dedicated admin app already wired, on plain PHP and SQLite.
1 dependency
No build step
Built for AI agents
Stripe + SES ready
Watch MRR compound while the billing loop does the work
Stripe tiers, proration, dunning and a self-serve portal — every transition lands as one signed row, and the dashboard just goes up and to the right.
Monthly recurring revenue
$
RECURRING REVENUE, WIRED
The charge-monthly base, already plumbed
Stripe tiers, renewals, dunning and proration on plain PHP and SQLite. The boring billing machinery is done; you build the product on top.
Renewals and dunning
invoice.paid tops up the period's credit allowance and extends access; payment_failed flips the account to past_due and starts the retry clock. Both arrive as signed Stripe webhooks, verified before anything writes.
Proration on switch
Upgrades and downgrades go through Stripe with proration on, so the next invoice carries the credit or charge. Access level updates the moment the subscription does.
A real sidebar app to live in
Subscribers land in a left-sidebar member app — dashboard, account, billing, downloads — with a Stripe Billing Portal link to swap card, change plan or cancel without emailing you. The marketing top-nav drops away; you build the product inside the shell.
Tier-gated, with an upsell built in
route_required_tier marks the paid routes; a free user who hits one is shown an inline pricing gate instead of a dead end, and the member sidebar puts a lock badge on what they can't reach yet. Guests bounce to login.
Stripe is the source of truth for status
active, past_due, canceled and the current period end all live in the subscriptions table, kept in sync by webhooks. Cancel-at-period-end is honoured: the customer keeps access until the date they paid through, then access lapses on its own. No nightly job guessing who still owes you.
The subscription lifecycle
One subscriber, four states, zero cron jobs
From checkout to lapse, every transition is a signed Stripe webhook writing one row — the rail below is the loop you don't have to build.
01
Subscribe
checkout.session.completed → active
02
Renew
invoice.paid → credits reset, period extends
03
Fail / dunning
payment_failed → past_due, Stripe retries
04
Cancel at period end
access until paid-through, then lapses
Recurring revenue, by the numbers
The whole subscription rides on a handful of moving parts
Not traction numbers — this is how the billing machinery behaves the moment you deploy it.
4
subscriber states: active, past_due, canceled, cancel-at-period-end
3
webhook events run the recurring core — checkout, invoice.paid, payment_failed
3
layout shells route every request — public marketing site, the left-sidebar member app, the admin app
1 row
every transition writes a single signed, verified subscriptions row
Try before you buy — no card, nothing saved
Click through all seven live demos — including a whole client site built in the CMS.
You're in one now. Hop straight to any other site type — same tab, still a demo: no card needed, no payment is real, and nothing you do is saved.
Each site-type demo is one of the seven ready-to-run profiles in the download — copy the folder, add your keys, ship.
AI Image Studio
Sell credit-metered AI image generation with a gallery and storage you own
images.getsimplestack.com
No-code CMS
Hand clients a site they edit themselves in a visual page builder
cms.getsimplestack.com
Mobile App Backend
Includes native iOS + Android apps, already wired to a backend with verified sign-in and a JSON API — no Firebase bill
app.getsimplestack.com
Subscriptions you're here
Launch a recurring-revenue SaaS with Stripe tiers and tier-gated access already wired
saas.getsimplestack.com
Digital Downloads
Take one-time payments for files that stay protected and never leak a public URL
downloads.getsimplestack.com
Credits & Usage
Charge per action with a usage ledger that always balances to the row
credits.getsimplestack.com
API Product
Ship a metered, rate-limited /v1 REST API with self-serve bearer keys
api.getsimplestack.com
Keep the infrastructure small. Make the product yours.
This store and its demos use the same PHP and SQLite foundation included in your download.
1
SQLite database
| web_build_step | none |
| source_code | included |
| hosting | your own server |
| database_mode | SQLite WAL |
Superadmin, not a spreadsheet
A real admin console — have a poke around.
Every install ships with this. Search users, replay webhooks, inspect billing and revoke keys — server-rendered, access-gated, no second app.
MRR£4,820▲ 12%
Active subs138▲ 6
Credits today29,400spent
Signups · 7d52▲ 18%
| User | Plan | Status | Joined |
|---|---|---|---|
| ada@example.com | Pro | active | 2d ago |
| grace@example.com | Scale | active | 5d ago |
| linus@example.com | Starter | past due | 3w ago |
| margaret@example.com | Pro | active | 1mo ago |
| blocked@example.com | Free | blocked | 1mo ago |
processed
invoice.paidevt_1Q8x…a3processed
customer.subscription.updatedevt_1Q8w…f1processed
checkout.session.completedevt_1Q8w…7cretrying
invoice.payment_failedevt_1Q8v…02refunded
charge.refundedevt_1Q8u…9dcurl -H "Authorization: Bearer ss_live_••••" \ https://app.yoursaas.com/api.php?resource=notes { "ok": true, "data": [ "note_18f2", "note_18f9" ], "rate_limit": "58/60", "credits_left": 1840 }
From download to charging cards
Preview locally. Connect services. Launch.
01
Unzip & copy
copy a template folder
02
Install & connect
composer install · Stripe + SES
03
Ask your agent
rebrand · plans · run doctor
04
Deploy & charge
NGINX + PHP-FPM · take cards
Try the local app before configuring billing or email. Provider approval and deployment take additional time.
Pricing you control
Tiers, access levels and credits from one config file.
Define plans in app/subscriptions.php, attach Stripe price IDs, and the checkout flow stays generic across every project.
Included
Free
£0Default access for new users and trial accounts.
Subscription
Starter
$19/moFor a small paid SaaS tier.
Subscription
Pro
$49/moFor heavier usage and premium features.
Subscription
Scale
$149/moFor power users and high-credit products.
Questions
The honest FAQ.
Stripe Checkout handles monthly and yearly plans, upgrades are prorated, downgrades are scheduled for period end, and the billing portal lets members manage their card and cancellation. Failed-payment (dunning) handling is built in.
Yes — each plan sets an access level and an optional monthly credit grant, so you lock a page or action behind a tier with one check.
They open the Stripe billing portal from their dashboard to update payment details, switch plan, or cancel — no support ticket needed.
The starter includes prepared queries, signed Stripe webhooks, CSRF checks, rate limiting, session hardening, setup diagnostics and regression tests. Configure the enabled providers, verify backups and test your own product before launch.
You pay your hosting and service providers directly. Budget for a PHP server, domain, transactional email and payment processing. Image generation/storage and native app store accounts add costs if you enable them. Check provider pricing for your region and expected usage; the template itself is a one-time purchase.
Get started
You’re already inside.
This is a live, fully interactive demo — explore every screen. Nothing you do is saved and no payments are real.