--- title: "Application Revamp" description: "🔧 Structure your prototypes, modernise your legacy systems Turn your patched-together or outdated tools into reliable, maintainable and scalable web applications. A bespoke revamp takes your existing application (a fragile AI/No-Code prototype or an old PHP/Access/FileMaker system) and rebuilds it with a clean, documented, tested architecture, without starting from scratch or interrupting your business. The" url: "https://calamus.fr/en/application-revamp/" author: "contact@calamus.fr" date: "2026-08-08T12:24:29+02:00" modified: "2026-09-09T17:42:33+02:00" lang: "en_US" --- # Application Revamp ## 🔧 Structure your prototypes, modernise your legacy systems *Turn your patched-together or outdated tools into **reliable, maintainable and scalable** web applications.* A bespoke revamp takes your existing application (a fragile AI/No-Code prototype or an old PHP/Access/FileMaker system) and rebuilds it with a clean, documented, tested architecture, without starting from scratch or interrupting your business. The result: a tool you can grow without worrying it will break. --- ## 🔄 2 problems, 1 solution: a bespoke revamp Whether your tool is a recent prototype or a twenty-year-old system, the principle is the same: keep what works, rebuild what no longer holds up. | Your situation | My solution | Result | |---|---|---| | **⚠️ "My AI/No-Code prototype won't scale"** It's modern, but poorly structured, buggy, or impossible to maintain | Complete revamp with a **clean architecture** and documentation | A **maintainable**, scalable application with no technical debt | | **⚠️ "My legacy system is expensive to maintain"** PHP, Access, FileMaker… technologies from the 2000s | Progressive migration to a **modern webapp** | A **secure**, performant system compatible with today's tools | --- ## 🛠 How do you revamp an AI or No-Code prototype? By rebuilding its business logic in a clean, tested architecture, while keeping what already works on the interface and data side: expect one week for a basic revamp, two to three for a complete one. ### ⚠️ Does your prototype show these symptoms? - **It works... until it crashes** (and you don't know why) - **Impossible to add a new feature** without breaking everything - **Your "developer"** (a friend, an intern, yourself) isn't available anymore - **You spend more time fixing it** than using it - **The code is unreadable** (or non-existent, if it's pure no-code) - **It works for 10 users, but not for 100** ### ✅ What I offer for your prototype or AI application 1. **Free audit** (30 min): analysis of your current code/prototype, identifying the blocking points 2. **Complete revamp** with: - **Clean, commented and documented** code - **Modular and scalable** architecture - Automated tests to prevent regressions - **Structured** database (if needed) 3. **Training** so you're autonomous for small changes 4. **1 month of maintenance included** (bug fixes, adjustments) #### 💰 Pricing (Prototype revamp) - **Audit**: FREE (30 min) - **Basic revamp**: From €1,200 (1 week) - **Complete revamp**: €2,500 - €4,000 (2-3 weeks) - **Monthly support**: €200 to €800/month > "He helped me bring to life a project I'd had in mind for several years \[...\] Hervé built it brick by brick, step by step and page by page, with flawless organisation." (Robin, [Tennis Stats app, Switzerland](/temoignages/)) --- ## 🏛 How do you modernise a legacy system (PHP, Access, FileMaker)? Through a progressive migration in three phases (interface, then backend, then database), with no service interruption, to move off a technology no longer maintained by its vendor. ### ⚠️ Does your legacy system show these symptoms? - **It dates from the 2000s** (PHP 5, Access, FileMaker, old Java versions…) - **Maintenance costs keep rising** (developers charge a premium to touch old code) - **Impossible to hire** developers who want to work on it - **Your users complain** because of the outdated interface or recurring bugs - **It's not compatible** with modern tools (API, mobile, cloud…) - **Questionable security**: PHP versions older than 8.1 have received no security patches since late 2023 (source: [php.net, Supported Versions](https://www.php.net/supported-versions.php)) ### ✅ What I offer for your legacy system 1. **Full technical audit** (€200, refunded if you sign): - Compatibility analysis with modern technologies - Security risk assessment - Performance benchmark 2. **Progressive migration** (with no service interruption): - **Phase 1**: New user interface (modern frontend) - **Phase 2**: Backend revamp (REST API) - **Phase 3**: Database migration (if needed) 3. **Training** for your team on the new tools 4. **Post-migration support** (3 months included) #### 💰 Pricing (Legacy system revamp) - **Technical audit**: €200 (refunded if you sign) - **Basic migration**: From €2,000 (2-3 weeks) - **Complete migration**: €5,000 - €10,000 (1-2 months) - **Annual maintenance**: €1,200/year --- ## 🎯 Why choose a bespoke revamp? Because a revamp only rebuilds what's causing problems, without throwing away what already works: cheaper and less risky than starting a project from scratch. #### ✅ Accessible everywhere Browser, mobile, tablet… no installation needed #### ✅ Multi-user No data conflicts or overwrites #### ✅ Secure Automatic backups, data protection #### ✅ Scalable Add features without breaking everything #### ✅ Maintainable Clean, documented code, no technical debt #### ✅ Support Training included for your team --- ## 💡 What sets me apart 16 years of development experience, but a single person from the first conversation to delivery: no middleman, no diluted responsibility. - **Progressive approach**: I don't break what already works, I improve it in stages - **100% remote**: Easy communication on WhatsApp or Telegram - **Human support**: No technical jargon, training included so you're autonomous - **Flexible payment**: In instalments if needed (no extra fees) - **Total transparency**: You have access to the code, backups, and documentation --- ## 📞 Ready to revamp your applications? ### 🎁 Discovery offer - **For prototypes**: **Free** audit (30 min) - **For legacy systems**: Audit at **€200** (refunded if you sign) [ Contact me on WhatsApp](https://wa.me/33637066822?text=Hello%2C%20I%27d%20like%20to%20revamp%20my%20application%21) *Reply within 24h - flexible time zone* Want to know more? Also check out: [📊 Get out of Excel](/en/get-out-of-excel/) | [💼 Portfolio](/en/portfolio-en/) | [🛠 Services](/en/services-2/) --- *Source : [calamus.fr](https://calamus.fr/en/application-revamp/)* --- *Servi par WP Agent Ready* (https://wp-agent-ready.com)