Studio composer with live reveal
Prompt, negative prompt, FLUX schnell/dev/pro, size preset and a 1-4 image count, all on one /studio screen. The generating card polls every second and reveals each image the moment fal finishes — no refresh.
AI image studio starter
Launch an AI image studio.
A complete fal.ai image generator — a gorgeous studio and gallery that open free in the sidebar app, then meter each render by credit balance.
Prompt in, owned pixels out
Type a line. Watch it develop.
A credit-metered FLUX pipeline with a live render reveal — the prompt types itself, the canvas resolves out of noise, and one credit clicks off the meter. Every result is re-fetched into storage you own.
PROMPT TO PIXEL
A fal.ai image studio, already wired
Type a prompt, pick a FLUX model and size, spend a credit per image. Every render lands in your own private R2 bucket behind a gallery you own — keys, billing and credit metering all included.
Gallery with folders and lightbox
A /gallery masonry grid with likes, folders you create and rename, and a lightbox that does prev/next, copy-prompt and download. Filter by liked or collection; move images between folders.
Free to open, gated by credits
/studio and /gallery live in the member sidebar app and open for any signed-in user — no hard paywall. Each generation spends 1 credit up front; hit zero and you're routed to top-up. If fal fails or the submit throws, the credits are refunded automatically.
Remix any result
Hit Remix on a gallery image and its prompt, model, seed and size load straight back into the studio. Lock the seed or randomise it.
Your own R2 bucket
Every image is downloaded from fal and uploaded into your private Cloudflare R2 bucket. No SDK — a plain cURL S3 Sig V4 signer in bootstrap.php.
Off until you add a FAL_KEY
The whole pipeline is dormant until FAL_KEY and your R2 keys are set, so the rest of the stack runs clean without it. A built-in dev mock paints gradient PNGs so you can click through the full studio and gallery before you spend a penny on fal.
Render, reconcile, own
Watch a batch land in storage you own
Type a prompt, pick a FLUX model, spend a credit per image — and every result is re-fetched server-side and self-hosted in your private R2 before it hits the grid.
low-angle ember-lit foundry, molten sparks, volumetric haze, cinematic 35mm — negative: text, watermark
FLUX dev · 4cr
seed 4471
seed 4472
reconciling…
fal → your private R2 (S3 Sig V4 PUT) → presigned GET, expires in hours
Prompt in, owned pixels out
The whole render pipeline, by the numbers
Every figure here is how the pipeline actually behaves — not a sales number.
1
credit per image, charged up front and auto-refunded if fal fails
3
FLUX models on tap — schnell, dev and pro, switchable per render
0
paywalls at the door — /studio and /gallery open free in the sidebar member app, gated only by your credit balance; a zero balance routes to top-up
0
renders left on fal's CDN — every result is re-fetched into your own private R2
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 you're here
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
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
Most SaaS dies of complexity, not competition.
Indie builders like Pieter Levels (@levelsio) run profitable products on exactly this shape — PHP · SQLite · jQuery · a cheap VPS per project.
50,000+
SQLite reads / sec
| daily_hits | 100,000+ |
| cost / 10k logins | $1 |
| whole_stack / month | < $10 |
| reads_block_writes | never · WAL mode |
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
Live on a real VPS in an afternoon.
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
unzip → live on a VPS — one afternoon.
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.
Whatever you decide — a generation, an API call, an export, a render minute. Plans grant credits; each action spends them through one ledger via consume_credits_for_action().
Your call per plan. Period credits top up to a fresh allowance each period by default, and you can switch to rollover in the plan config.
Yes — combine recurring plans that grant credits with one-time purchases for top-up packs.
Yes — parameterised SQL throughout, signed Stripe webhooks, CSRF, rate limiting and session hardening, all security-reviewed. Real plumbing, not a toy.
One small VPS runs the whole stack for a few dollars a month, and passwordless login emails on Amazon SES are about $1 per 10,000 sign-ins. Prefer Apple or Google sign-in? Both are built in with no per-login cost — Google's is free, and Apple's only needs an Apple Developer account ($99/yr) you likely already have to ship an app — so you can skip login emails entirely. No per-seat platform bills.
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.