AvaiBook vs iGMS: Head-to-Head Comparison
TL;DR: AvaiBook and iGMS both target short-term rental operators. Pick **[AvaiBook](/avaibook-review/)** if: Spanish-market property managers and owners who want a low per-unit PMS backed by the idealista brand, with native Booking.com/Airbnb/Vrbo channel management and Spanish-market payment processing. Pick **[iGMS](/igms-review/)** if: Airbnb-first hosts who want AI-drafted guest replies, a unified inbox, and basic team tools at a price point that doesn't require a sales call.
Category: Property Management Software · AvaiBook · iGMS
At a glance
| AvaiBook | iGMS | |
|---|---|---|
| Category | Spain-leading vacation rental PMS from the idealista group, with low per-unit pricing and 50+ channel integrations | Affordable AI-messaging-first PMS for individual Airbnb hosts and small portfolios |
| Founded | 2008 | 2015 |
| HQ | Madrid, Spain | North Vancouver, BC, Canada |
| Pricing | from $3/mo | from $20/mo |
| Best for | Spanish-market property managers and owners who want a low per-unit PMS backed by the idealista brand, with native Booking.com/Airbnb/Vrbo channel management and Spanish-market payment processing. | Airbnb-first hosts who want AI-drafted guest replies, a unified inbox, and basic team tools at a price point that doesn’t require a sales call. |
| Overall | 5.6/10 | 7.1/10 |
Feature-by-feature
| Feature | AvaiBook | iGMS |
|---|---|---|
| Channel manager | ✅ Native | ✅ Native |
| Unified inbox | ⚠️ Partial | ✅ Native |
| Direct booking site | ✅ Native | ⚠️ Partial |
| Task management | ⚠️ Partial | ✅ Native |
| AI guest messaging | — | ✅ Native |
| AI that takes actions | — | ⚠️ Partial |
| Automation rules | ⚠️ Partial | ✅ Native |
| Pricing optimizer | ✅ Native | 🔌 Via integration |
| Open API | ⚠️ Partial | ⚠️ Partial |
| Mobile app | ⚠️ Partial | ✅ Native |
| Multi-calendar | ✅ Native | ✅ Native |
| Accounting / reporting | ⚠️ Partial | ⚠️ Partial |
| Revenue management | ⚠️ Partial | ⚠️ Partial |
Scores by dimension
| Dimension | AvaiBook | iGMS |
|---|---|---|
| Ease of use | 5/10 | 8/10 🏆 |
| Features depth | 7/10 🏆 | 6/10 |
| Value for money | 8/10 | 8/10 |
| Support | 4/10 | 6/10 🏆 |
| AI capability | 2/10 | 7/10 🏆 |
| Scalability | 6/10 🏆 | 5/10 |
| Learning curve | 5/10 | 8/10 🏆 |
| Pricing transparency | 8/10 | 9/10 🏆 |
Where AvaiBook wins
- AvaiBook does not clearly out-score iGMS on any dimension in this directory.
Where iGMS wins
- Ease of use — 8/10 vs 5/10
- Support — 6/10 vs 4/10
- AI capability — 7/10 vs 2/10
- Learning curve — 8/10 vs 5/10
- AI guest messaging — native in iGMS, not in AvaiBook
Which one should you pick?
Pick AvaiBook if: Spanish-market property managers and owners who want a low per-unit PMS backed by the idealista brand, with native Booking.com/Airbnb/Vrbo channel management and Spanish-market payment processing. Pick iGMS if: Airbnb-first hosts who want AI-drafted guest replies, a unified inbox, and basic team tools at a price point that doesn’t require a sales call.
Pick by operator profile
| Profile | Winner | Why |
|---|---|---|
| Solo host (1-5 units) | iGMS | Higher profile fit (7.7 vs 5.6). |
| Boutique operator (6-20 units) | iGMS | Higher profile fit (7.4 vs 5.5). |
| Professional PM (20+ units) | iGMS | Higher profile fit (6.8 vs 5.5). |
| Enterprise (100+ units) | iGMS | Higher profile fit (6.5 vs 5.1). |
| Multi-market operator | iGMS | Higher profile fit (7.0 vs 4.9). |
| Tech-forward, AI-first | iGMS | Higher profile fit (7.5 vs 4.2). |
| Budget-conscious | iGMS | Higher profile fit (8.2 vs 7.3). |
AvaiBook in one paragraph
AvaiBook — Spain-leading vacation rental PMS from the idealista group, with low per-unit pricing and 50+ channel integrations. Strengths: Very low entry price (under €3/unit/month) relative to category; Native idealista group integration for Spanish-market distribution; 50+ channel connections including Booking, Airbnb, Vrbo, Expedia, Google Travel, Rentalia, HomeToGo. Weaknesses: No phone support — messaging-only contact with ~1-day response; Unavailable from Friday afternoon to Monday per user reports. Full AvaiBook review →
iGMS in one paragraph
iGMS — Affordable AI-messaging-first PMS for individual Airbnb hosts and small portfolios. Strengths: Airbnb Preferred Software Partner, Booking.com Certified Connectivity Partner, Vrbo Connected Partner; AI guest-messaging automation is the headline feature and it works on Airbnb’s native channel; Strong native mobile app (iOS + Android) with feature parity. Weaknesses: Messaging has a perceptible delay — not true real-time on incoming guest messages; 30-day multi-property calendar view missing; UX feels cramped at scale. Full iGMS review →
See also
- All Property Management Software comparisons
- 5stelle vs AvaiBook
- 5stelle vs iGMS
- AirDNA vs AvaiBook
- AirDNA vs iGMS
- Amenitiz vs AvaiBook
- Amenitiz vs iGMS
FAQ
Is AvaiBook or iGMS cheaper?
AvaiBook is cheaper at the entry level ($3/mo vs $20/mo).
Does AvaiBook have better AI than iGMS?
iGMS scores higher on ai capability — 7/10 vs 2/10.
Which is easier to use, AvaiBook or iGMS?
iGMS scores higher on ease of use — 8/10 vs 5/10.
Can I switch from AvaiBook to iGMS?
Yes, but plan for migration cost: channel reconnections, template rebuilds, automation recreation, and team retraining. Both AvaiBook and iGMS export reservation history; neither exports their automation rules cleanly. Run both in parallel for at least two weeks before cutting over.