Accon ERP vs STACK Construction Technologies: Complete Comparison 2026
An in-depth comparison of features, pricing, and user experience to help you make the right choice.
Accon ERP
Cloud ERP from Madrid for Spanish SMEs: accounting, CRM, warehouse, field service, time tracking and AI agents in one system.
STACK Construction Technologies
8.0(480 reviews)
Cloud-based construction takeoff and estimating platform that eliminates paper plans. Free tier available for basic measurements.
Quick Comparison
| Aspect | Accon ERP | STACK Construction Technologies |
|---|---|---|
| Best For | Spanish distribution, manufacturing and field service SMEs of 10-200 employees | Estimators and pre-construction teams doing 20+ bids per month |
| Pricing Model | Contact Sales | Freemium |
| Starting Price | Contact Sales | Free |
| Deployment | cloud | cloud |
| Platforms | WEB | WEB |
| Rating | 9.4/10 | 8.0/10 |
Pros & Cons
Accon ERP
Pros
- One integrated system: accounting, CRM, warehouse, field service and time tracking share the same data
- Sector-specific setups for distribution, manufacturing and technical service companies
- AI agents included in the family: invoice capture (Smart Finance) and 24/7 phone support (Smart Care)
- Accounting adapted to the SII, with automatic bank synchronisation
- Local implementation and support team in Madrid, plus the Accon Academy training portal
Cons
- No public pricing for the suite: you need a quote
- Not self-service: implementation runs through consulting
- Focused on Spain; limited use for multi-country groups
- Confirm connectors, data migration and applicable implementation costs in writing
STACK Construction Technologies
Pros
- Genuinely useful free tier for basic takeoff—not a stripped-down demo
- Browser-based with zero installation means any device with Chrome works
- Assembly library accelerates measurement of complex construction elements
- Takeoff-to-estimate workflow eliminates manual quantity transfer
- Plan overlay and comparison tools catch design changes between revisions
Cons
- Pre-construction only—no project management after you win the bid
- Annual pricing at $2,499-$4,999/yr is steep for occasional estimators
- No native integrations with popular construction PM platforms
- Assembly customization has a learning curve for first-time users
Pricing Comparison
| Product | Pricing Model | Starting Price |
|---|---|---|
| Accon ERP | contact sales | Contact Sales |
| STACK Construction Technologies | freemium | Free0 |
Our Verdict
Choose Accon ERP if...
Spanish distribution, manufacturing and field service SMEs of 10-200 employees
Choose STACK Construction Technologies if...
Estimators and pre-construction teams doing 20+ bids per month
Still Not Sure?
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