Review
Assembly Studio review: AI apps inside a client portal (not AssemblyAI)
Key takeaways
- Assembly Studio at studio.assembly.com is an AI app builder for professional service firms. Apps publish into Assembly’s branded client portal with CRM, auth, workflows, and payments.
- Free forever: 5 contacts, 50 build credits/mo, 3 apps. Starter $29/mo annual ($49 monthly). Professional $99. Advanced $499 (HIPAA/BAA path). Extra apps $5/mo. Extra build credits $0.60.
- Not AssemblyAI (speech-to-text). Different company and product. Our directory already has AssemblyAI under speech tools.
- Compare Lovable, Base44, Hercules, or Softr only after you decide whether you need Assembly’s portal primitives.
Table of contents
What Assembly Studio is
Assembly Studio turns plain-language app descriptions into client/internal apps that live inside Assembly’s authenticated portal, not as orphan public marketing sites.
Auth is platform-managed. Live app usage does not burn build credits; create/edit does.
Pricing
| Plan | Price (annual where noted) | Limits |
|---|---|---|
| Free | $0 | 5 contacts, 1 user, 50 build credits/mo, 3 apps |
| Starter | $29/mo annual ($49 monthly) | 50 contacts, 200 credits/mo |
| Professional | $99/mo annual | 500 contacts, 3 users, 200 credits |
| Advanced | $499/mo annual | Unlimited contacts, 5 users, HIPAA/BAA, MFA |
Source: assembly.com/pricing and studio launch materials (Aug 2026). Last verified: August 2026. Credits refresh monthly without rollover. Public launch was mid-August 2026; treat longevity as early.
Who it is for
Good fit: accounting, agency, and consulting firms that want custom client portals without stitching five SaaS tools.
Weak fit: founders who want a public Lovable/Bolt-style marketing app URL, or pure speech-to-text buyers looking for AssemblyAI.
5 curated tools below.
Assembly Studio
Assembly Studio is an AI app builder for professional service firms that generates client-facing and internal apps in plain language, then publishes them into Assembly's existing branded client portal with CRM, auth, permissions, workflows, and payments already in place. It is deliberately not a public marketing-site builder; apps are for authenticated team and client experiences.
Base44
Base44 is an AI app builder that generates full-stack web apps from natural language: frontend, backend, auth, database, payments, and hosting included. It targets founders and teams who want to ship internal tools, client portals, and SaaS MVPs without configuring infrastructure. "Superagents" add workflow automation on top of built apps (vendor claim).
Hercules
Hercules is a no-code AI app builder for business software: describe what you want in chat, such as "build a CRM for my 75-person sales team," and Hercules builds a working application in real time, with auth, hosting, backend, database, payments, email, and API integrations built in rather than requiring separate setup. Finished apps can publish to a custom domain or to the iOS App Store and Google Play instantly. This is a different product from TestZeus's open-source "Hercules" testing agent (github.com/test-zeus-ai/testzeus-hercules), same name, unrelated companies.
Lovable
Online AI website creator, builds websites from scratch using prompts, no code required
Softr Studio
Softr lets teams build client portals, internal tools, and membership apps on top of Airtable, Google Sheets, SQL, and Softr Databases—without code. Built-in AI generates copy and images, powers Ask AI blocks, and supports vibe-coding-style app building for non-developers.
| Tool | Best for | Pricing | Billing note |
|---|---|---|---|
| Assembly Studio | Low-code / No-code | Paid | Paid Service |
| Base44 | Low-code / No-code | Freemium | Free Trial |
| Hercules | Low-code / No-code | Freemium | Free Trial |
| Lovable | Low-code / No-code | Freemium | Free Trial |
| Softr Studio | Low-code / No-code | Freemium | Free Trial |
Frequently asked questions
Is this AssemblyAI?
No. AssemblyAI is a speech intelligence API. Assembly Studio is an AI app builder on assembly.com for service firms.
Assembly Studio vs Lovable?
Lovable is a general product prototype builder with Git paths. Assembly Studio assumes you want apps glued to Assembly’s CRM/portal. Different buyer.
Is Free enough to try with real clients?
Yes for a tiny contact list and light iteration. Heavy rebuild loops will burn the 50 monthly credits quickly.