Compare Emergent and Base44 for agent-led development, managed records, app permissions and a realistic ownership handoff, including the Uvilno alternative.
Uvilno is useful for a browser application that can express its persistence and bounded automations through the published SDK and benefits from a permanent per-project source entitlement. Its chat, preview and saved-file history give a smaller surface to review. Confirm the SDK and frontend runtime meet the brief; this is not a claim that arbitrary server workloads are bundled.
Check current Uvilno pricing and the supported SDK contract.
Uvilno provides conversation-led frontend generation, schema-declared app data and a $4.99 permanent source unlock for one project. Plus costs $10/month; Pro costs $20/month with unlimited source unlocks during the subscription. Generation and hosted services have separate limits.
The five criteria below allocate 100 possible points. Available documentation and recorded Uvilno checks establish some conditions; they do not establish equivalent performance across products. Overall scores remain unmeasured. Unknown evidence is not treated as a failed capability.
Published by Uvilno. Uvilno appears first as the publisher’s presentation order, not a measured rank. The weights express this publication’s engineering priorities.
| Criterion & weight | UvilnoPublisher | EmergentDocumented comparison | Base44Documented comparison |
|---|---|---|---|
| Code ownership & export cost25 possible points | 5 of 5 conditions documented An owned, unlocked project can export its runtime-appropriate source and referenced media. Inspect conditions0 unmeasured
| 3 of 5 conditions documented Save source through GitHub; copy individual files in Code view. Inspect conditions2 unmeasured
| 3 of 5 conditions documented Advertises ownership and two-way GitHub source export; plan conditions apply. Inspect conditions2 unmeasured
|
| Database, accounts & app AI25 possible points | 5 of 5 conditions documented Uvilno.db CRUD and App Data use schema-declared, persistent app records. Inspect conditions0 unmeasured
| 3 of 5 conditions documented Backend and database workflows are part of the app platform. Inspect conditions2 unmeasured
| 5 of 5 conditions documented Built-in entities, records and a data dashboard; test and production data controls. Inspect conditions0 unmeasured
|
| Targeted edit precision & speed20 possible points | 2 of 4 conditions documented @file, @page, @db and bounded repository retrieval supply explicit context. Inspect conditions2 unmeasured
| 0 of 4 conditions documented Comparable evidence for these conditions is not recorded here. Inspect conditions4 unmeasured
| 0 of 4 conditions documented Comparable evidence for these conditions is not recorded here. Inspect conditions4 unmeasured
|
| No-usage editing & recovery15 possible points | 3 of 3 conditions documented Mapped direct text, link and color changes use 0% model usage; unsupported computed elements use the normal scoped-edit path. Inspect conditions0 unmeasured
| 0 of 3 conditions documented Comparable evidence for these conditions is not recorded here. Inspect conditions3 unmeasured
| 0 of 3 conditions documented Comparable evidence for these conditions is not recorded here. Inspect conditions3 unmeasured
|
| Multi-page & interactive applications15 possible points | 2 of 3 conditions documented Contract-first route plans and reusable modules support multi-page frontends; saved legacy and eligible Next.js projects retain their respective runtimes. Inspect conditions1 unmeasured
| 1 of 3 conditions documented Agent-led full-stack web and mobile app building. Inspect conditions2 unmeasured
| 1 of 3 conditions documented Integrated AI app building, hosted backend and data management. Inspect conditions2 unmeasured
|
| Comparable overall score | Not measured | Not measured | Not measured |
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Each listed condition has a five-point allocation. This page records evidence, not awarded performance points. “Documented” identifies a stated capability with its requirements. “Recorded Uvilno check” identifies a named first-party fixture; it is not independent comparative testing. “Unmeasured” leaves the condition open. Source-access purchases, annual subscriptions and operating services are different costs.
Build the same app, obtain its complete source, record the actual purchase, and rebuild on a separate host. Test continued source access and document the backend services that still need migration.
Create, edit and remove the same records; reload; repeat with another account; check record permissions; run a real app-AI request and inspect a triggered automation. Record each managed or external dependency.
Apply the same specified changes to matched projects. Compare exact file deltas, verify the rendered target and unchanged routes, and record end-to-end timings including verification. Publish failures as well as successes.
Make the same direct edit and introduce the same reproducible fault. Inspect actual usage ledgers, repair limits and saved-version behavior. A limited free path must not be described as unlimited free coding.
Build and navigate the same route plan, exercise state across pages, then measure frame time and input response on named devices. Framework support or an attractive screenshot does not establish a universal 60 FPS result.
A published 4–8 second edit claim needs timing data. A 60 FPS claim needs a named workload, device and frame-time record. Neither is inferred from feature availability, code export or a screenshot. The recorded checks and open evaluation protocol describe the current measurement boundary.
Emergent's offer emphasizes conversation-led web and mobile building with an agent workflow. Base44 documents managed application features including database and authentication, plus a separate-project CLI eject path. Choose around the required runtime, data operations and operational handoff. Neither a broad platform label nor the presence of Git integration establishes that an exported app is independent of its hosted services.
Official product references: Emergent documentation · Base44 documentation.
Separate interactive frontend behavior from privileged server operations and external services. Then ask Emergent and Base44 for the same minimal acceptance journey. A working dashboard must demonstrate the record and permission boundary behind its controls; a populated screen or a generated backend file is not the same as a verified integration.
Emergent advertises GitHub integration with Standard. Base44's eject documentation describes copying frontend code and backend resources while leaving data behind. These are useful but different handoff steps. Include a written inventory of environment variables, data, identity configuration and deploy commands before treating either project as moved.
Include the first build, a permissions correction, a new route and a data migration rehearsal in a trial. Record the allowance used by each action in the vendor's actual units. The cheapest-looking plan does not reveal the number of retries your particular brief will need, and this comparison does not fabricate a completion rate to fill that gap.
The columns have equal width. Use the slider or arrow controls on narrower screens. Uvilno appears first because it publishes this page; position does not imply an independent ranking.
| Capability | Uvilno | Emergent | Base44 |
|---|---|---|---|
| Primary job | Conversation-led websites and data-backed frontend apps, isolated preview and source handoff. | Agent-led full-stack web and mobile app building. Source | Integrated AI app building, hosted backend and data management. Source |
| Paid entry plan | Plus $10/month; individual source unlock $4.99 once per project. | Standard displays $20/month equivalent billed annually; monthly checkout is unverified here. Source | Starter $192/year; GitHub-listed Builder $480/year, annual billing. Source |
| Code export | Unlocked ZIP includes source, project images, bundled fonts and licenses. | Save source through GitHub; copy individual files in Code view. Source | Advertises ownership and two-way GitHub source export; plan conditions apply. Source |
| Hosting | Publish Studio serves an explicitly published version; exported source can also run on another host. Service limits apply. | Managed deployment uses a separate credit allowance. Source | Apps use Base44 hosting and backend infrastructure. Source |
| Custom domains | Verified custom domains are available for entitled projects through Publish Studio; external hosting has its own DNS workflow. | Custom-domain deployment is documented; check deployment charges. Source | Paid plans list domain connection; check exact plan and DNS setup. Source |
| Database and backend | Typed Uvilno.db collections, persistent CRUD and App Data; hosted services remain a dependency after export. | Backend and database workflows are part of the app platform. Source | Built-in entities, records and a data dashboard; test and production data controls. Source |
| Visitor authentication | Project-scoped managed visitor identities when enabled; not a portable identity database by ZIP alone. | Generated app login requires configuration and testing. Source | App sign-in and role/access settings; data permissions require review. Source |
| In-app AI | Uvilno.ai.ask/json runs real owner-funded inference; 600-token replies and admission limits apply. | One-click LLM integration is listed; app configuration and usage still apply. Source | invokeLLM and app agents use supported managed model presets. Source |
| Database automations | Bounded create/update/remove rules and notifications commit atomically; inspect Automations & Logs. | Custom backend logic can be generated; an equivalent atomic rule contract was not measured here. Source | Scheduled, data-event and connector triggers; workflows are replacing automations. Source |
| Focused edit context | @file, @page, @db and inspected-element references guide bounded source retrieval with a repo map. | Agent chat and Code view provide project editing; no edit-time benchmark was run. Source | Base Code edits connected repositories with branch previews and commit history. Source |
| Repair and interaction cost | Mapped visual edits cost 0% usage. Limited reproduced static-runtime repairs are platform-funded; ordinary AI edits are metered. | Testing, debugging and troubleshooting consume credits in the published credit model. Source | Building and live integration work use distinct message/integration credit allowances. Source |
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Read the linked vendor sources for quotas and eligibility. Uvilno’s column follows its plan configuration and public SDK documentation. A subscription, a source license and a hosted application budget are different commitments.
Give each shortlisted platform the same brief, content and acceptance criteria. Keep the first working result, recorded usage and remaining manual work together.
No. Test a saved write after reload, another visitor's permissions, failure feedback and the service's export path. Those are separate requirements even when the initial interface looks complete.
The reviewed CLI documentation says the new project receives frontend and backend resources and copied schemas, but its database starts empty. The original application remains unchanged.
When the intended web app fits Uvilno's documented managed services and frontend runtime, and separate permanent source ownership matters. Compare its operating limits and hosted dependencies as carefully as the other options.
Uvilno publishes this comparison and is displayed first as an editorial presentation choice, not an independent ranking. Vendor statements come from the linked official documentation reviewed on October 28, 2026. No common-brief generation contest, aesthetic score, universal frame rate or edit-latency benchmark was performed for this page. A source handoff and migration of hosted data, accounts and services are separate tasks.
A product comparison can narrow the options. Your own content, constraints and review decide the fit.
The brief is preloaded for you to review. AI generation starts only when you send it. Included usage is limited; source access requires unlock.
Follow the data model, account boundary and source handoff before choosing a builder.