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How much does a Lovable/Bolt project takeover cost?
Lovable/Bolt project takeover: discover the real prices, from €1,500 to €30,000+, depending on deployment, auth, data, and performance
You built a V0 in vibe code. In a few hours, you had a screen, a flow, sometimes even a payment. Then comes the time to “go live,” and everything gets complicated.
The question isn’t “does it work on my browser.” The real question is: can it handle real users, real data, proper authentication, and a clean deployment. That’s when the app redesign cost becomes unclear, and the web app agency price varies tenfold depending on what needs to be fixed.
If you’re still comparing tools before this step, you can also read our article on Lovable vs Bolt to better understand the differences between the two approaches.
The goal of this article: give you realistic price ranges, explain what drives up the cost, and show you a simple approach to unblock without starting from scratch.
Lovable/Bolt project takeover: what exactly are we talking about?
A takeover isn’t “redesigning the UI.” It’s putting a vibe-code-generated base on “production” tracks.
Concretely, a Lovable/Bolt project takeover (and the same for v0) can include:
- secure auth and access
- stabilize data (schema, migrations, constraints)
- fix deployment and infra (environment, variables, CI)
- improve performance (load times, queries, caching)
- add safeguards (logs, monitoring, error handling)
- prepare for the next steps (technical roadmap, conventions, handover)
It’s rarely just one issue. Often, you think you have “a deployment bug,” but the real blocker is a combination: fragile auth + inconsistent data + dependencies that break the build.
Why a vibe code prototype hits a wall at production time
Lovable, Bolt, and v0 are great for moving fast. Their business models even encourage rapid prototyping and iteration through monthly subscriptions.
The problem is that “prototype speed” often comes at the cost of compromises that surface later:
1) Code that works, but not “maintainable” code
Vibe code can produce duplication, tightly coupled components, scattered API calls, and business logic strewn everywhere. It’s fine when you’re working alone. As soon as you add a dev or fix 10 things, it becomes unstable.
2) Auth and roles: the one area you can’t cut corners
A prototype can “simulate” login. In production, you need to handle sessions, refresh tokens, password resets, permissions, GDPR, and sometimes multi-tenancy. This is often where the app refactor cost emerges.
3) Data: prototypes tolerate ambiguity, production does not
In production, poorly defined data is expensive: bugs, support, impossible exports, billing errors. A proper fix often requires a real data model and migrations.
4) Deployment and performance: the reality of infrastructure
Locally, everything is fast. In production, you deal with networks, caching, builds, quotas, 500 errors, environment variables, and monitoring.
If you’re still at the stage of defining the right product foundation, our guide how to develop a web application can also help you distinguish between a quick prototype and a production-ready app.
The 4 blocks that impact app refactor cost
If you’re looking for a rough estimate, you’ll get it wrong. The right approach is to measure the effort across 4 blocks. This is exactly why the web app agency price can sometimes be very low, sometimes very high.
Block 1: Deployment and environment
What we often see in Lovable/Bolt takeovers:
- builds that break depending on the environment
- missing variables, poorly managed secrets
- no CI/CD, no clean preview environment
- unstable hosting configuration
Typical effort: 1 to 5 days if the code is clean, 1 to 3 weeks if the architecture is inconsistent.
Block 2: Authentication and permissions
“It works in demo” isn’t enough. In production, you usually need:
- robust auth (provider, sessions, error handling)
- roles and permissions
- route, API, and data protection
- forgotten flows (logout, expirations, multiple devices)
Typical effort: 2 to 10 days depending on the expected security level.
Block 3: Data and integrations
This is the most underestimated block in vibe coding.
- data model to stabilize
- migrations
- validation rules
- integrations (CRM, billing, email, analytics)
- file, export, and backup management
Typical effort: 3 to 15 days. It escalates quickly if data already exists and needs to be restructured without losing history.
Block 4: Performance, quality, observability
This block turns a “nice” app into a “reliable” one.
- query optimization
- caching
- clean error handling
- actionable logs
- monitoring, alerts
- targeted tests (not necessarily 100% coverage, but key user journeys)
Typical effort: 2 to 10 days, more if the app has many screens and edge cases.
Price ranges: what you actually pay
Let’s be clear: without an audit, no one can give you “the price” for your takeover. However, we can provide scenarios that reflect market reality.
One key point: rates depend on the provider. Daily rates for tech freelancers in France often range in the several hundreds of euros per day, and agencies charge more based on seniority and specialization.
Scenario A: Targeted fix (the prototype is sound)
You have a solid foundation. There’s one real friction point (deployment, auth, data, or performance) and we fix it properly.
- Typical budget: 1,500 to 6,000 euros
- Typical timeline: 2 to 10 days
We even see offers “starting at 1,500 euros” for highly targeted takeovers, when the scope is clear and the foundation is usable.
Scenario B: Serious production readiness (multiple blocks to address)
The most common case in code mode: it works, but 2 to 4 blocks need securing.
- Typical budget: 6,000 to 15,000 euros
- Typical timeline: 2 to 4 weeks
This is often the best trade-off. You keep the prototype’s speed but remove major risks.
Scenario C: Partial rebuild (keep the product, redo the foundations)
Here, we preserve the product intent, sometimes the UI, but we rebuild part of the architecture, data model, or auth.
- Current budget: 15,000 to 30,000 euros
- Current timeline: 1 to 2 months
At this level, budgets align with classic custom web app costs, especially if your app evolves into a full business application or a mini SaaS.
Scenario D: Full rebuild (the prototype shouldn’t go further)
It happens. The vibe code prototype proved the concept, but the code is too unstable, too tightly coupled, or too risky.
- Current budget: 30,000 euros and above
- Current timeline: 2 months and beyond
This is the scenario we aim to avoid with a proper diagnosis—it’s expensive and demoralizing.
What drives up the cost of a web app agency takeover for Lovable/Bolt projects
If you receive two widely different quotes, it’s not necessarily a scam. It’s often due to differing implicit scopes.
Here are the most common “multipliers”:
There are already users and data
Taking over an empty database is simple. Taking over one with history, permissions, and data that must not be broken is another story. This is often the real core of app redesign costs.
You need a high “production-grade” level
B2B, sensitive data, payments, compliance, SLAs. The bar rises quickly, especially for auth, logs, and security.
The prototype relies on fragile integrations
A makeshift Zapier, an unstable API, a webhook without retries. In production, every integration must be hardened.
Deployment must be industrialized
This is often where teams get stuck: build, environments, secrets, monitoring. Code isn’t the only issue.
A simple method to estimate your app refactoring cost in 15 minutes
Without complicated tools, you can scope your takeover with 6 questions. Answer honestly, and you’ll already have an idea of scenario A, B, C, or D.
- Can someone explain the architecture in 5 minutes?
- Is the auth real, with roles and complete user journeys?
- Is the data model clear, with constraints and readable business logic?
- Is the deployment reproducible, or is it just “it works on my machine”?
- In case of an error, do we have useful logs, or nothing?
- If we add 10 features, does it hold, or does it break everywhere?
If you answer “no” to 3 or more questions, you’re probably in scenario B or C.
Dr Lovable: a takeover designed to unblock fast, without overpaying
At Scroll, we created Dr Lovable to address exactly that make-or-break moment: between vibe code prototype and production.
The principle is intentionally simple:
- Diagnosis : we review your project, identify the real blocker, and give you a clear plan.
- Targeted fix : we only step in where it’s truly stuck, on one of the 4 major topics: deployment, auth, data, performance.
- Clean handover : we leave you with a stable foundation, documented just enough, and ready for the next steps.
And yes, despite the name, it’s not just for Lovable: we also work with Bolt and v0, because the symptoms are the same when moving from vibe code to prod.
To see what this kind of intervention looks like in a real case, you can also read how Scroll Agency unlocked a SaaS business AI prototype. It’s a good addition to reassure a reader who’s still torn between a targeted fix and a more structured overhaul.
Three concrete budget examples (to help you gauge)
“We have a V0, but can’t deploy it”
Often a mix of dependencies, environment variables, build issues, and server/client routes.
Typical budget: €2,000 to €6,000, depending on repo cleanliness and industrialization needs.
“Users can log in, but permissions aren’t reliable”
It’s a classic. Once you have roles, workspaces, or per-client data, you need to secure it.
Typical budget: €4,000 to €12,000.
“Data is all over the place”
Unclear schema, changing fields, impossible exports, cascading bugs.
Typical budget: €6,000 to €18,000, especially if migration without data loss is required.
To regain full control of your Lovable app, see our guide Jailbreak Lovable.
The next logical step if you want a reliable estimate
The simplest way to get a serious quote is to start with a short diagnosis, then price a targeted fix. That’s exactly the Dr Lovable approach: avoid the massive “just in case” estimate, and also avoid the small quote that blows up mid-project.
If your code-heavy prototype is stuck, we can review your project, identify the real bottleneck, and quickly tell you whether you’re in scenario A, B, C, or D. Then, we only intervene on what gets you closer to production—without turning your recovery into an endless rebuild.
If you’d like, you can reach out via our Dr Lovable by Scroll offer: diagnosis, bottleneck identification, then a targeted fix on deployment, auth, data, or performance.
