Bubble's agency account costs $85 per seat a month, and its apps can't go live until you transfer ownership to the client. That rule says a lot about how AI app builders for agencies should be scored: who logs in, whose brand they see, who bills whom, and what breaks at client number twenty.
Clients have never once asked to see the prompt.
The scores at a glance:
Assembly is the best AI app builder for agencies on client-facing criteria, because each client gets its own login and sees only the apps you allow, every app carries your branding, and billing sits in the same client experience, so nobody juggles a second login.
Bubble scores on visual depth, Lovable on fast coded apps, and Softr on portals over existing data. Replit brings full-stack range, GoHighLevel (HighLevel) brings sub-accounts and rebilling, and Bolt.new brings agency handoffs.
WeWeb adds self-hostable code exports, Base44 bundles payments with a full backend, and Adalo ships native iOS and Android store apps.
| Platform | Per-client logins | White label | Built-in billing | Paid from (as of Nov. 2026) |
|---|---|---|---|---|
| Assembly | Yes | Professional plan | Yes | $49/mo |
| Bubble | You configure | Custom domain | Not stated | $39/mo |
| Lovable | You configure | Pro plan | Stripe or Paddle | $25/mo |
| Softr | Client user groups | Pro plan | Not stated | $25/mo |
| Replit | You configure | Via Clerk Auth | Not stated | $20/mo |
| GoHighLevel | Sub-accounts | Unlimited plan | Yes | $97/mo |
| Bolt.new | You configure | Paid plans | Not stated | $25/mo |
| WeWeb | You configure | Via self-hosting | Not stated | $25/mo + hosting |
| Base44 | You configure | Custom domain | Wix or Stripe | $20/mo |
| Adalo | Not stated | Custom domain | Stripe | $65/mo |
Each column answers a question that gets harder as your client count climbs, so read every cell as if you had 20 clients logging in next week.
Per-client logins asks whether each client can sign in and see only their own work without you writing the access rules. "Yes" means the platform handles it, while "You configure" means the pieces (auth, a database, privacy rules) exist and you wire up and test the separation in every app.
White label asks what it takes for clients to see your brand and none of the vendor's. The cell names the plan or method where that starts (and nobody wants to explain a stray vendor logo to a client's finance lead).
Built-in billing asks whether you can invoice clients or take payments inside the platform. For an agency, that decides whether the app sits next to the invoice or becomes one more tab clients forget about.
Paid from is the lowest monthly-billed paid plan as of November 2026. It's the entry ticket only, and each section below breaks down how seats, credits, client users, and usage change the bill at scale. "Not stated" means the vendor's own pages don't claim the feature.
Scorecard read: The platform scores yes on per-client logins and billing, with white label from Professional and paid plans from $49/mo.
For agencies: It pairs a CRM for your team with a branded client experience, and the AI app builder adds custom apps on top. You describe an app, answer a few clarifying questions, approve a one-page plan, and publish, then change it later by continuing the conversation.
At 20+ clients, permissions are where it pulls ahead. Every app reads from one CRM of contacts, companies, and custom fields, and those custom fields decide which apps each client sees, so a new account inherits the right access without a rebuild.
Sign-in, permissions, and branding are platform infrastructure the AI never generates, and each app runs in its own sandbox with a dedicated database scoped to your workspace. New apps land with your logo and colors and stay hidden from clients until you make them visible.
Billing and payments, contracts with e-signatures, messaging, and files live in the same client experience, so a client can approve a deliverable and pay the invoice in one place. The platform is SOC 2 Type II certified and never uses client data to train AI models.
Ditto by DBC, a marketing firm, runs a white-labeled portal for data intake, approvals, and asset delivery across 60+ clients, and has generated 118K+ assets through it.
Cost: Free is $0 with 5 active contacts, 1 internal user, and 3 apps. Starter is $49/mo, Professional is $139/mo (custom domain and badge removal start here), Advanced is $599/mo, and Enterprise starts at $2,000/mo.
There are no per-client charges and no setup or hosting fees, every paid plan includes five apps (extra apps are $5/mo each), and clients using live apps never consume build credits.
Where it scores lower: Build credits set the pace when you're building for many clients in the same month. Paid plans include 200 a month, a typical app takes a few dozen to build from scratch, and extra credits are $0.60 each, so budget for heavy onboarding months.
Scorecard read: Bubble is strong on app depth and native mobile, with logins you configure, a custom domain on paid plans, and no built-in billing stated.
For agencies: One prompt generates a starting app with UI, logic, and database, and the AI Agent (in beta) adds features and troubleshoots. Most of the work still happens in a visual editor that covers frontend and backend logic, and web plus native iOS and Android apps share one database.
Per-client access comes from built-in authentication and privacy rules you write yourself. That's flexible, but it means testing every rule before a client logs in, and the security dashboard helps by flagging exposed API keys and privacy rule gaps before deploy.
The agency account gives you unlimited apps with Growth-plan features in development for $85 per seat a month. Each agency app includes two editors, one for you and one for the client, and apps stay password-protected until ownership transfers to the client.
Cost: As of November 2026, web plans are Starter at $39/mo, Growth at $134/mo, and Team at $399/mo, and Web and Mobile plans are $69, $249, and $649. Each plan covers one project, and workload units meter server activity, with overages billed unless you switch them off.
Where it scores lower: If every client gets its own app, that's a separate plan per client, paid by the client after transfer, and you lose access unless they invite you back. There's no code export, and no client billing feature is stated.
Scorecard read: Lovable is a quick route to a coded client web app, with logins you configure, white label on Pro, and Stripe or Paddle for payments.
For agencies: Plan mode writes a plan you review before any code exists, Build mode implements it, and Code mode lets you browse, edit, and download the source. Cloud, the built-in backend, covers database, storage, authentication, realtime, and functions.
Adding sign-up and login is listed at 1.20 credits on Lovable's pricing page, against 0.50 for making a button gray, so auth itself is cheap to generate.
Handoff is code-friendly, with two-way Git sync to GitHub, GitLab, and Bitbucket, codebase download on paid plans, and remixing to move a project to another account. A remix copies the schema and leaves database records and secrets behind.
Unlimited workspace members on every plan help when clients want to watch progress, and the partner program (Experts and Solution partners) feeds a public directory of builders for hire. On security, its trust center lists SOC 2 Type II and ISO 27001:2022.
Cost: As of November 2026, Free gives 5 credits a day (up to 30 a month), Pro is $25/mo for 100 credits, and Business is $50/mo for 100 credits with SSO and role-based access. Credits are pooled per workspace and expire two months after they're issued.
Where it scores lower: Per-client permissions are yours to design and test in every app, and apps with heavy traffic can incur costs beyond the included grant. Free and Pro workspaces must opt out of model training in settings.
Scorecard read: Softr scores well on client logins thanks to separately priced client users and user groups, with white label from Pro and no billing feature stated.
For agencies: Softr builds portals and internal tools with databases, workflows, and integrations included. You start with the AI Co-Builder, a template, or a blank canvas, the result stays editable in visual controls, and custom vibe-coded blocks fill gaps the standard blocks don't cover.
For a 20-client agency, the access model is the draw. Pro gives you 3 custom user groups, Business gives you 10 plus global data restrictions that enforce record-level access, and Business also adds a per-user logo so each client sees their own branding.
Data can live in Softr Databases or 21+ external sources, from Airtable and Google Sheets on every plan to HubSpot and SQL on Business. Pro and up can transfer projects to another workspace, and Softr is SOC 2 Type II compliant.
Cost: As of November 2026, plans are Free, Basic at $25/mo, Pro at $119/mo, and Business at $395/mo, with unlimited apps on all of them. Pro includes 50 client users and Business includes 100, with extra users from $1 and $2 a month respectively.
Where it scores lower: Client users are where the bill grows, since 20 clients with three users each already passes Pro's 50. Workflows pause at the monthly action cap, and SSO is Enterprise-only.
Scorecard read: Replit is strong on full-stack range and mobile, with branded logins available through Clerk Auth and no built-in billing stated.
For agencies: Replit Agent builds web apps, sites, and native iOS and Android apps via Expo from a chat, backed by managed PostgreSQL, object storage, and hosting. Free, Power, and Max modes trade model power against credits, and connected GitHub or GitLab repos let Agent open pull requests.
For client-facing apps, the login choice matters. Replit Auth shows a Replit-branded page, while Clerk Auth is fully customizable with the app's name, icon, and colors, and Enterprise lets you bring your own OAuth app for branded connectors.
Every customer gets its own isolated Google Cloud project, even on the free tier, and Replit holds SOC 2 Type II certification. Its Solution Partners program supports consulting, implementation, and reselling at no cost to join.
Cost: As of November 2026, Core is $20/mo with 5 collaborators, and Pro runs from $100 to $2,050 a month with up to 15. Usage beyond included credits follows effort-based pricing, so a complex request costs more than a simple one.
Where it scores lower: There's no Teams plan, so a growing agency lands on Pro tiers or Enterprise. Forecasting spend across 20 client apps is hard when each request is priced by effort, and SSO and audit logs are Enterprise-only.
Scorecard read: GoHighLevel scores yes on billing and per-client sub-accounts, with white label from the $297 Unlimited plan, though its app builders are still in Labs or beta.
For agencies: Each client gets a sub-account with CRM and pipelines, funnels and websites, workflows, SMS and email, calendars, reputation tools, and payments. Snapshots clone a pre-built setup by industry, which is how you avoid configuring client twenty from scratch.
Billing is the standout. On Unlimited and the $497 Founder plan you can rebill phone, SMS, email, and AI usage to clients with markup, and SaaS mode on the $497 plan lets you sell HighLevel as your own software with Stripe-based plans you price yourself.
App building is the newer piece. Client App Builder (branded web portals and Android apps) sits in Labs, the AI App Builder for client portal apps is in private beta, and AI Studio builds sites and landing pages from prompts.
Cost: As of November 2026, Starter is $97/mo with 3 sub-accounts, Unlimited is $297/mo, and the $497 Founder plan adds SaaS mode. Add-ons include a $49/mo branded client portal app per sub-account, a $497/mo white label mobile app, and $297/mo for HIPAA compliance.
Where it scores lower: As an app builder it's early, since the AI tools that build client apps are still in Labs or private beta and the mobile output is Android-only. Telecom and AI usage is metered on top of the plan, and sub-account AI use is paid.
Scorecard read: Bolt.new scores yes on white label (paid plans) and on handoff, with logins you set up in Bolt Cloud and no built-in billing stated.
For agencies: Bolt runs a dedicated agencies page built around briefing, building, and handing off client work, and it describes client portals "white-labeled to their brand, with no third-party logo in the corner." Projects can transfer to another workspace or to a different user entirely.
You build in chat with Plan mode or Build now, starting from a prompt, a Figma frame, a Google Stitch design, a GitHub repo, or a template. Bolt Cloud supplies hosting, domains, a database with authentication, file storage, and server functions, and the Expo integration covers native mobile.
Bolt is SOC 2 Type 2 certified, and Enterprise customers can deploy into their own AWS or Azure tenant.
Cost: As of November 2026, Free includes 1M tokens a month, Pro is $25/mo starting at 10M tokens, and Teams is $30 per member per month with centralized billing. Pro hosting covers up to 30 GB of bandwidth and 1 million requests, with pay-as-you-go overage.
Where it scores lower: Teams tokens aren't pooled between members, so one busy builder can run dry while another sits on a surplus. Per-client permissions are yours to build in each project, and web projects don't easily switch to mobile later.
Scorecard read: WeWeb scores on handoff and ownership, with a Partner plan built for client transfers, logins you configure through WeWeb Auth, and no billing feature stated.
For agencies: WeWeb AI generates the UI, a database in WeWeb Tables, auth through WeWeb Auth, file storage, and logic, and then you edit in a drag-and-drop editor with custom JavaScript and CSS. Data can stay in WeWeb Cloud or connect to Supabase, Xano, REST, GraphQL, or SQL.
The Partner plan is the agency hook, with staging on a WeWeb subdomain, free access to client workspaces, project transfers to clients, and a directory listing. Partners also earn a 20% recurring referral commission.
Code export starts on Essential, and WeWeb's export page describes a standalone Vue.js app you can self-host with zero WeWeb dependencies, plus GitHub sync. Your app's users never need a seat, so there's no per-end-user charge.
Cost: As of November 2026, workspace plans are Free, Essential at $25/mo, Pro at $60/mo per developer, and Partner from $95/mo per developer. Each live app also needs its own WeWeb Cloud plan, from $15/mo for front-end only up to $249/mo for Scale+.
Where it scores lower: That per-app hosting layer adds up across 20 client apps, and team collaboration starts at Pro. Output is responsive web apps, with no native mobile claimed.
Scorecard read: Base44 scores yes on payments and bundles auth with a backend, with logins you configure and a custom domain from Starter.
For agencies: Base44, owned by Wix, builds full apps from plain-language prompts, covering frontend, backend, database, user auth, and payments. You refine in a responsive visual editor, and paid plans unlock in-app code edits.
Payments run through Base44 Payments (powered by Wix) or Stripe, and Superagents automate workflows across your tools. End users can sign in with SSO through Google Workspace, Microsoft, GitHub, Okta, or OIDC, and the platform runs on Wix infrastructure with SOC 2 Type II and ISO 27001.
For agency work, a workspace-level design system keeps client apps consistent, a CLI command moves an app to another workspace, and a "Hire a partner" directory lists Base44 experts by tier.
Cost: As of November 2026, Free includes 25 message credits and up to 5 apps, Starter is $20/mo, Builder is $50/mo, Pro is $100/mo, and Elite is $200/mo. Message credits cover AI building, integration credits cover integration actions, and services like Stripe bill you directly.
Where it scores lower: Mobile apps are web views inside a native wrapper, so iOS apps can't sell digital content through In-App Purchase. Per-client data rules are yours to set up and test, and code editing is paid-only.
Scorecard read: Adalo scores on native mobile and flat pricing, with Stripe and custom domains from Builder and no white-label or login details stated.
For agencies: Adalo builds database-driven web apps and native iOS and Android apps from one version. Ada, its AI builder, generates screens, database, logic, and navigation with Magic Start, and you refine on a visual multi-screen canvas.
Builds are true native IPA and AAB files, and Builder plans publish to the App Store and Google Play with Stripe, maps, push, and custom actions. Business adds the Collections API, external databases, and unlimited instant updates.
Builder caps instant updates at one a month, so a client who wants weekly tweaks pushes you toward Business. The Adalo Experts network matches projects with freelancers and agencies, which can feed you new client work.
Cost: As of November 2026, Free covers unlimited test apps with 500 records each, Builder is $65/mo for 2 published apps and 5 editors, and Business is $200/mo for 5 published apps and 10 editors. There are no usage-based charges and no per-seat pricing, which makes the bill easy to predict.
Where it scores lower: Five published apps on Business is a hard ceiling for an agency with 20 clients. The pricing page shows no agency plan, white label, or transfer feature.
Read across each row for the columns you'll feel every month. A retainer agency with 20+ clients logging in weekly should weight per-client logins and white label above everything, because rebuilding access rules for each client is where hours disappear.
If clients pay you for the app itself, billing matters less than handoff. Bubble's ownership transfer, WeWeb's Partner plan, and Bolt's project transfers all score well on that front.
Marketing agencies selling leads should read GoHighLevel's row through its billing column, since rebilling and SaaS mode are the reason to pick it. Mobile-first clients point toward Adalo, Replit, or Bubble.
Then run the 20-client math. Price the plan, the seats or client users, any per-app hosting, and usage for your real client count, because "Paid from" is only the entry ticket. I'd put one real client through a trial and read the bill before onboarding the rest.
Some agencies shouldn't build client apps at all, and no score on this page changes that.
If most engagements are one-off projects that last a couple of months, an app adds handoff and maintenance work nobody is paying for. A shared folder and a solid kickoff doc may cover what those clients need.
If there's no maintenance budget, the app will age badly. Client processes change, fields get renamed, and someone has to own the fixes, so if that person doesn't exist on your team, wait until they do.
And if your clients won't log in, a beautiful portal won't change their habits. Ask before you build and believe the answer (a client who has ignored three password-reset emails has already given it).
Look for per-client logins, white label on a plan you can afford, billing in the same place, and pricing that still makes sense at 20 clients. Run one real client workflow through a free plan or trial before committing, since permission gaps show up fastest with real data.
Few charge per client by name, but per-user, per-seat, per-app, and per-sub-account pricing often works out the same. Softr prices client users separately, GoHighLevel sells its client portal app per sub-account, and WeWeb charges hosting per live app but never per end user.
GoHighLevel includes payments plus usage rebilling and SaaS billing, while Base44, Lovable, and Adalo let you add payments to the apps you build. Base44 offers payments powered by Wix or Stripe, Lovable integrates Paddle or Stripe, and Adalo adds Stripe from its Builder plan.