01
Scope before building.
Over one to two weeks, we clarify the scope, identify the risks and validate the target architecture. Development starts from a documented, costed foundation.
A selection of current projects
Product engineering,
from the Atlantic coast.
Mobile applications, web platforms, cloud architecture and applied AI: we design, deliver and evolve products from scoping through to production.
Studio Bidibou is now Black Tide Studio.
The same studio, under a new identity. Studio Bidibou SARL remains the legal entity operating Black Tide Studio.
capabilities.ts
hero.tsx
studio.ts
Explorer
blacktide
src
capabilities.ts
hero.tsx
studio.ts
package.json
README.md
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// capabilities.ts — Black Tide Studio
// 10 years of production engineering.
export const capabilities = {
mobile: ['Swift', 'Kotlin', 'Flutter'],
web: ['Next.js', 'React', 'TypeScript'],
cloud: ['AWS', 'NestJS', 'Postgres'],
ai: ['LLM', 'RAG', 'Agents'],
product: ['UX', 'Design system', 'Delivery'],
} as const;
export const studio = {
location: 'Île d\'Oléron, FR',
status: 'available',
};
main·production · monitored
TypeScript·Île d'Oléron · FR
Selected collaborations
A selection of collaborations that have shaped the studio.
- Vibly
- Blisterr
- Meduz
- Fred n' So
- Sur les traces d'Ularius
- Parkto
- Kaptn
- Fantasy Alley
- Reavox
Method
A clear method, from decision to operation.
Four stages: frame the risks, document the decisions, deliver iteratively and maintain the product over time.
01
Scope before building.
02
Documented architecture. Decisions explained.
03
Reviewed, tested and deployed.
04
Maintain the product over time.
Technology
Proven choices, matched to the product.
Technologies we use regularly on products in production.
Swift
Kotlin
Flutter
React Native
NestJS
Next.js
Node.js
TypeScript
PostgreSQL
Redis
MongoDB
S3
AWS
Cloudflare
Hetzner
Docker
Terraform
Anthropic
OpenAI
Mistral
Stripe
GitHub Actions
Linear
Sentry
Swift
Kotlin
Flutter
React Native
NestJS
Next.js
Node.js
TypeScript
PostgreSQL
Redis
MongoDB
S3
AWS
Cloudflare
Hetzner
Docker
Terraform
Anthropic
OpenAI
Mistral
Stripe
GitHub Actions
Linear
Sentry
Services
Three areas. One team.
Mobile and web engineering, cloud architecture and applied AI. One team to design and deliver the product.
Mobile apps
iOS, Android, Flutter, React Native.
from €35,000 excluding VAT
Web & cloud architecture
Next.js, NestJS, AWS, PostgreSQL.
from €45,000 excluding VAT
AI & data
RAG, agents, fine-tuning, MLOps.
from €25,000 excluding VAT
Commitments
Our commitments when working together.
Commitments defined in each commercial proposal.
A documented product, prepared for handover.
At delivery, the materials specified in the quote — source code, PostgreSQL schemas, architecture diagrams and operating guides — are provided and organised to support ongoing operation or handover to another team.
Progress you can see. Issues raised early.
Regular demos make progress tangible. Budget, schedule, risks and decisions are shared clearly. Any deviation is raised as soon as it appears, together with the available trade-offs.
Defined support after production launch.
The warranty scope and response times are set out in the quote. Issues attributable to the delivery are addressed at no extra cost within that agreed framework.
Technical challenges
Technical problems that call for precise engineering.
Four real situations, presented through their constraints, architectural decisions and outcomes.
AI · LLM
Multi-model LLM pipeline
On Meduz, a pipeline orchestrates a narrative model and an instruction-tuned model, with dynamic routing based on conversational context. Sub-second latency, controlled costs.
const pipeline = {
narrative: 'llama-3.1-70b',
instruct: 'gpt-4o-mini',
router: context-aware
};
narrative: 'llama-3.1-70b',
instruct: 'gpt-4o-mini',
router: context-aware
};
Hardware · BLE
Native Swift and Kotlin modules for real-time BLE
On Meduz, native modules built in Swift for iOS and Kotlin for Android connect a Bluetooth Low Energy device to Flutter. Real-time data, careful battery use and robust reconnection handling.
channel.invokeMethod('startScan', {
serviceUuid: 0xFE12,
notify: (bytes) => stream.add(bytes)
});
serviceUuid: 0xFE12,
notify: (bytes) => stream.add(bytes)
});
Streaming · Live
Sub-three-second live streaming at controlled cost
On Blisterr, a hybrid architecture combines LL-HLS for viewers with WebRTC for co-hosts. On-demand infrastructure follows the load while keeping latency below three seconds.
const player = {
protocol: 'll-hls',
latency: '< 3s',
fallback: webrtc
};
protocol: 'll-hls',
latency: '< 3s',
fallback: webrtc
};
Cloud · AWS
Multi-AZ AWS infrastructure for 50 student associations
On Vibly, a multi-AZ AWS architecture supported 50 student associations, each with feeds, paid events and real-time messaging. Express and MongoDB on Elastic Beanstalk, S3 for media and Firebase for notifications.
aws.elasticBeanstalk({
runtime: 'node-express',
datastore: 'mongodb',
multiAz: true
});
runtime: 'node-express',
datastore: 'mongodb',
multiAz: true
});
10yrs
of production engineering
5/5
client satisfaction
3yrs
average client engagement
Oléron
studio based in France
Work
Products designed, delivered and supported over time.
Products at different stages of their lifecycle, presented with their context and current status.
Live auction marketplace
Blisterr
Live auction marketplace for collectibles: sellers host a stream and buyers bid on each lot in real time. We took over the existing Flutter application and backend to deliver a faster version, supported by a hybrid LL-HLS and LiveKit architecture and infrastructure provisioned on demand.
Flutter · NestJS · PostgreSQL · LiveKit · LL-HLS · Hetzner · Cloudflare
Ongoing · since 2026
Conversational AI mobile app
Meduz
Flutter · NestJS
Ongoing
Student social network
DiscontinuedVibly
Flutter · Express
3 years 4 months
Technical audit and recovery
Parkto
Flutter · NestJS
1 month
Showcase site · Event caterer
Fred n' So
Nuxt · Vue
Delivered
Showcase & booking site · Leisure
Sur les traces d'Ularius
Nuxt · Vue
Delivered
Reading platform & community
Fantasy Alley
Flutter · NestJS
Ongoing
Cross-platform gaming platform
DiscontinuedReavox
Flutter · Node.js
2-year engagement
Testimonials
What our clients say.
« Responsive, efficient and highly capable. Their advice is sound, and they meet deadlines. I recommend them. »
Vincent
Sur les traces d'Ularius
« Professional, committed and creative. They go beyond delivering the expected result and genuinely care about our project's success. »
Maxime Peigney
Vibly
« They have supported us from the beginning and continue to be there when we need them. They know their field and are committed to their work. »
Sophie D.
Fred n' So
Qualifications and approval
An AWS certification, a Google Professional Certificate and French CII approval.
Three distinct forms of recognition, each presented on its own terms.
AWS Solutions Architect
AWS Certified Solutions Architect – Associate certification. Cloud architecture audits by a certified architect.
Google UX Design
Google UX Design Professional Certificate. Art direction and UX/UI across products supported by the studio.
French Innovation Tax Credit approval
Studio approved by the French government under the CII scheme. Project eligibility and tax treatment must be confirmed with your tax adviser.
FAQs
Budget, timing and ways of working together.
Answers to the questions that usually come up before a first conversation.
What budget should I plan for a project with Black Tide Studio?
Our reference ranges are €12k to €25k excluding VAT for a prototype, €35k to €70k for an MVP and €80k to €160k for a scale-ready product. These are indicative ranges: scope, technical risks and the level of support determine the final quote after scoping.
How long does it take to build a mobile app?
Timing depends on scope, external dependencies and the risks that need to be resolved. Technical scoping produces a realistic schedule with explicit milestones and trade-offs before the build starts.
Native (Swift/Kotlin) or cross-platform (Flutter/React Native), which to choose?
Flutter or React Native share a substantial part of the product across iOS and Android. Native Swift and Kotlin provide direct control over each platform. The choice depends on the expected experience, hardware integrations, performance constraints and the skills of the team that will own the product; we make it during scoping.
How should I choose between Black Tide Studio and a freelancer?
Black Tide brings product design, development, cloud architecture, testing, deployment and follow-up into one engagement. A freelancer can be especially well suited to a focused requirement or to strengthening an existing team. The right choice depends on scope, the responsibilities to cover and the organisation already in place.
Why a studio on Île d'Oléron instead of Paris?
Our published daily rate is €750 ex VAT. We work remotely from Île d'Oléron, with regular check-ins and travel when the project requires it. The quote sets out the scope, estimated days and any third-party costs.
How does budget estimation work?
The 30-minute discovery call is free. If it confirms a good fit, a one- to two-week technical scoping phase is billed at our day rate. It produces an itemised quote, delivery plan and target architecture. The engagement begins when the quote is signed.
Next step
Let's discuss your project.
A 30-minute conversation to understand the context, constraints and next step. Technical scoping follows if it is relevant.