iGMS vs Rentals United: Head-to-Head Comparison
TL;DR: iGMS and Rentals United both target short-term rental operators. 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. Pick **[Rentals United](/rentals-united-review/)** if: Operators on a PMS who need one integration to reach 60+ channels — including long-tail European OTAs most competitors don't cover.
Category: Property Management Software · iGMS · Rentals United
At a glance
| iGMS | Rentals United | |
|---|---|---|
| Category | Affordable AI-messaging-first PMS for individual Airbnb hosts and small portfolios | Global vacation rental channel manager connecting PMS software to 60+ booking channels |
| Founded | 2015 | 2013 |
| HQ | North Vancouver, BC, Canada | Barcelona, Spain |
| Pricing | from $20/mo | quote-based |
| Best for | 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. | Operators on a PMS who need one integration to reach 60+ channels — including long-tail European OTAs most competitors don’t cover. |
| Overall | 7.1/10 | 5.4/10 |
Feature-by-feature
| Feature | iGMS | Rentals United |
|---|---|---|
| Channel manager | ✅ Native | ✅ Native |
| Unified inbox | ✅ Native | — |
| Direct booking site | ⚠️ Partial | — |
| Task management | ✅ Native | — |
| AI guest messaging | ✅ Native | — |
| AI that takes actions | ⚠️ Partial | — |
| Automation rules | ✅ Native | ⚠️ Partial |
| Pricing optimizer | 🔌 Via integration | — |
| Open API | ⚠️ Partial | ✅ Native |
| Mobile app | ✅ Native | — |
| Multi-calendar | ✅ Native | ✅ Native |
| Accounting / reporting | ⚠️ Partial | — |
| Revenue management | ⚠️ Partial | — |
Scores by dimension
| Dimension | iGMS | Rentals United |
|---|---|---|
| Ease of use | 8/10 🏆 | 6/10 |
| Features depth | 6/10 | 8/10 🏆 |
| Value for money | 8/10 🏆 | 6/10 |
| Support | 6/10 🏆 | 5/10 |
| AI capability | 7/10 🏆 | 2/10 |
| Scalability | 5/10 | 8/10 🏆 |
| Learning curve | 8/10 🏆 | 5/10 |
| Pricing transparency | 9/10 🏆 | 3/10 |
Where iGMS wins
- Ease of use — 8/10 vs 6/10
- Value for money — 8/10 vs 6/10
- AI capability — 7/10 vs 2/10
- Learning curve — 8/10 vs 5/10
- Pricing transparency — 9/10 vs 3/10
- Unified inbox — native in iGMS, not in Rentals United
Where Rentals United wins
- Features depth — 8/10 vs 6/10
- Scalability — 8/10 vs 5/10
Which one should you pick?
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 Rentals United if: Operators on a PMS who need one integration to reach 60+ channels — including long-tail European OTAs most competitors don’t cover.
Pick by operator profile
| Profile | Winner | Why |
|---|---|---|
| Solo host (1-5 units) | iGMS | Higher profile fit (7.7 vs 5.1). |
| Boutique operator (6-20 units) | iGMS | Higher profile fit (7.4 vs 5.4). |
| Professional PM (20+ units) | iGMS | Higher profile fit (6.8 vs 6.1). |
| Enterprise (100+ units) | iGMS | Higher profile fit (6.5 vs 6.0). |
| Multi-market operator | iGMS | Higher profile fit (7.0 vs 5.7). |
| Tech-forward, AI-first | iGMS | Higher profile fit (7.5 vs 4.7). |
| Budget-conscious | iGMS | Higher profile fit (8.2 vs 5.3). |
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 →
Rentals United in one paragraph
Rentals United — Global vacation rental channel manager connecting PMS software to 60+ booking channels. Strengths: Broadest channel catalog in the category — 60+ OTAs including long-tail European channels; Mature two-way XML/REST API used by most major PMSes as their connectivity backbone; Strong coverage of regional European channels (HomeToGo, Holidu, Atraveo, e-domizil). Weaknesses: Not a standalone PMS — requires an underlying system for operations, guest comms, and tasks; Setup can be slow; channel certifications vary in speed. Full Rentals United review →
See also
- All Property Management Software comparisons
- 5stelle vs iGMS
- 5stelle vs Rentals United
- AirDNA vs iGMS
- AirDNA vs Rentals United
- Amenitiz vs iGMS
- Amenitiz vs Rentals United
FAQ
Is iGMS or Rentals United cheaper?
iGMS publishes entry-level pricing; Rentals United requires a sales call, so the answer depends on the quote you get.
Does iGMS have better AI than Rentals United?
iGMS scores higher on ai capability — 7/10 vs 2/10.
Which is easier to use, iGMS or Rentals United?
iGMS scores higher on ease of use — 8/10 vs 6/10.
Can I switch from iGMS to Rentals United?
Yes, but plan for migration cost: channel reconnections, template rebuilds, automation recreation, and team retraining. Both iGMS and Rentals United export reservation history; neither exports their automation rules cleanly. Run both in parallel for at least two weeks before cutting over.