Two Dutch systems for installation and service businesses, laid side by side on AI, job sheets, estimating, price and implementation. Including where Syntess is stronger.
Flixer Pro and Syntess Atrium solve different halves of the same problem. Syntess is a full ERP for installation, service and maintenance: estimating, project management, work preparation, service contracts and financial administration run from one project administration, built for mid-sized to large businesses. Flixer Pro starts one step earlier, at the request: an AI phone assistant takes every call and puts it in the right customer record, an AI agent drafts quotes and job sheets, and you are live the same week from € 65 per month with no implementation project. Syntess does not publish prices and does not mention AI features on the product site. Choose Flixer Pro if you do not want to miss another request and want to start quickly; choose Syntess if you need deep estimating, project management and contract management and can take on an implementation project.
Price and best fit for both systems, without sales talk.
Flixer Pro and Syntess side by side, by feature area.
| Feature | | |
|---|---|---|
| AI & automation | ||
| AI phone assistant (call logging) Records incoming calls, transcribes them and links them automatically to the right customer record. | Yes | No |
| AI agent for tasks & automation An AI agent that carries out tasks in the system itself, rather than loose fixed workflow rules. | Yes | No No AI features are mentioned on the product site. |
| AI-generated job sheets Job sheets drafted automatically from the call and the job. | Yes | No |
| Automatic lead follow-up New requests are followed up automatically so no lead sits idle. | Yes | No |
| Work & scheduling | ||
| Digital job sheet (photo + signature) | Yes | Yes Web job-sheet app: work, hours, checklists and materials on site. |
| Scheduling & calendar Shared scheduling with drag-and-drop rescheduling. | Yes Kept deliberately simple. | Yes Work preparation, scheduling and logistics module. |
| Time tracking | Yes | Yes Time-tracking app on tablet, smartphone and desktop, booked straight to project, task or job sheet. |
| Quotes | Yes | Yes Via the projects and estimating module. |
| Invoicing | Yes | Yes Sales and purchase invoices, payments and bank statements in the system itself. |
| Offline mobile app | Yes | Unknown Offline working is not described on the product pages. |
| Money & integrations | ||
| Online payment on the invoice (iDEAL/PayPal/credit card) Built-in pay button on the invoice, not only via an accounting integration. | Yes | Partial iDEAL via the UnifiedPost/Z-factuur integration, not built into the invoice itself. |
| Dutch accounting integrations | Yes Moneybird, Exact Online, e-Boekhouden, SnelStart, Twinfield, WeFact. | Partial Has its own integrated financial administration instead of a link to external accounting packages; bank transactions via Bizcuit. |
| Large number of integrations (50+) | Partial Connects to the main NL tools, but less broad than the largest suites. | Partial Partner integrations including Bizcuit and UnifiedPost; no published number of integrations. |
| Management | ||
| Stock management | No On the roadmap. | Partial Materials and logistics within work preparation; no separate stock module found on the product site. |
| Estimating / project budgeting | Partial | Yes Projects and estimating is a core module. |
| Contract & SLA management | Partial | Yes Service and maintenance with recurring contracts as their own module. |
Data on Syntess verified on 12 August 2026 via Syntess Atrium — homepage en modules , Syntess — digitale werkbon-app , Syntess — online urenregistratie , Syntess — financiële administratie en Bizcuit , Syntess — partners en integraties , Syntess — Atrium Business editie , Syntess Software wordt onderdeel van Aceve (dec 2025) . Vendor features can change.
For installation and service businesses that mainly lose time to missed calls, quotes that sit unfinished and administration after the job, Flixer Pro is the stronger choice: the AI phone assistant logs every request, the AI agent takes over the drafting work, and you run this week at a price that is on the site. If your business runs on multi-year projects with deep estimating, post-calculation and a large base of service contracts, Syntess Atrium already offers that ERP depth today, with a correspondingly heavier path to get there.
Syntess Atrium is a serious package with a clear place in the Dutch installation sector. Anyone who runs on multi-year projects, sharp estimating and a large base of maintenance contracts finds depth there that Flixer Pro does not offer today.
The difference is where the system starts. Syntess starts with work you already have in: the estimate, the schedule, the job sheet, the invoice. Flixer Pro starts at the phone. The AI phone assistant takes the call you could not take yourself, puts it in the right customer record and turns it into a request ready to quote. A missed call is a missed job, and that loss sits before every ERP process.
So mainly weigh where your time leaks now. If you lose margin in estimating and post-calculation, Syntess is the logical choice. If you lose revenue to requests that sit unfinished and evenings of administration after the job, Flixer Pro solves exactly that, this week still and at a price that is simply on the site.
Syntess Atrium is a full ERP for installation, service and maintenance, with estimating, project management, work preparation, service contracts and financial administration in one system. Flixer Pro is an AI-first system that starts one step earlier, at the incoming request: the AI phone assistant takes calls and logs them, and the AI drafts quotes, job sheets and invoices. Syntess goes deeper on delivery and administration; Flixer Pro goes further on winning and automating work.
The Syntess product site does not mention AI features. There is no phone assistant that records calls and puts them in the customer record, no AI agent that takes over administrative work and no auto-generated job sheet. That is the clearest difference with Flixer Pro.
Syntess does not publish prices. There are three editions, Professional, Business and Enterprise, and the price follows from a demo or advisory conversation, depending on edition, modules and implementation. Flixer Pro starts at € 65 per month, or effectively € 52 per month when paying six months in advance, with 14 days free to try and no implementation costs.
In ERP depth. Estimating and post-calculation, work preparation with materials and logistics, extensive contract and maintenance management and your own integrated financial administration are core Syntess modules. Businesses that run on those parts get more from Syntess today.
Flixer Pro starts with a free trial and typically runs the same week, without an implementation project and without setup costs. Syntess is implemented through a project with advice and configuration, which fits the size of the package but asks for more time and budget.
Yes. You can import customers and projects from Excel, and the Flixer Pro team helps with larger migrations through a guided import. If you still have a contract or implementation with Syntess, running side by side during the trial is the safest route.
Flixer Pro connects to the software you already run. No double entry, no replatforming, just your current stack joined up.
And more through our open API and webhooks. Connect Flixer Pro to any system.
Try Flixer Pro free for 14 days. No credit card, cancellable monthly from € 65 per month.
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