The project dashboard is a free tool that is only available to verified hoteliers to make adopting new technology easier by streamlining their research and simplifying their communication workflow.
TLDR
We analyzed 528 verified hotelier reviews, compared feature sets, pricing, and real-world case studies to break down where each platform delivers. The right choice depends on your property type and priorities:
HotelFlex shines .
Oaky by Plusgrade shines in ease of use and customer support — especially for brand properties (5.0/5) , with exclusive features like Multi-Channel Delivery (Email, SMS, WhatsApp, Chat).
Side-by-side ratings based on 528 verified hotelier reviews on HTR.
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| Starting Price | Contact sales | From $300/mo |
| Verified Reviews | 0 | 528 |
After analyzing 528 verified reviews, HotelFlex users most value its , while Oaky by Plusgrade users highlight upselling efficiency, user interface and system usability, customer support experience. Click any theme to see what reviewers say.
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Upselling Efficiency
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User Interface and System Usability
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Customer Support Experience
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Personalization and Targeted Promotions
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Reporting System Challenges
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Integration with PMS
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How each product ranks among Upselling Software vendors for different property sizes, types, and regions — based on verified reviews from hoteliers in each segment.
By Hotel Size
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| Small (10-24 rooms) ▾ | #21 0 reviews | #5 42 reviews |
| Mid-Size (25-74 rooms) ▾ | #26 0 reviews | #2 263 reviews |
| Large (75-199 rooms) ▾ | #20 0 reviews | #1 141 reviews |
| X-Large (200+ rooms) ▾ | #24 0 reviews | #2 57 reviews |
By Property Type
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| Boutique ▾ | #22 0 reviews | #2 216 reviews |
| Luxury ▾ | #23 0 reviews | #2 278 reviews |
| Branded / Chain ▾ | #25 0 reviews | #2 208 reviews |
| Extended Stay ▾ | #21 0 reviews | #3 33 reviews |
By Region
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| North America ▾ | — | #7 29 reviews |
| Europe ▾ | #22 0 reviews | #1 315 reviews |
| Asia Pacific ▾ | #13 0 reviews | #2 81 reviews |
| Middle East ▾ | #10 0 reviews | #2 52 reviews |
Choosing between HotelFlex by HotelFlex and Oaky by Plusgrade hinges on your hotel's specific needs and growth goals. Both products aim to boost revenue through different approaches—HotelFlex by optimizing inventory and Oaky by maximizing upselling opportunities—yet their core functionalities diverge significantly. Your decision should consider the primary problem you want to solve: inventory utilization or guest upselling.
HotelFlex specializes in filling unsold rooms by managing inventory to accommodate guests with irregular schedules, thus increasing occupancy and revenue. Oaky, on the other hand, focuses on increasing revenue per guest through targeted upsell offers, which can be implemented across multiple touchpoints in the guest journey. Do you need to optimize inventory or elevate guest spend?
HotelFlex and Oaky both serve the hospitality industry but tackle different revenue challenges. HotelFlex excels at managing unsold inventory by reallocating rooms that would otherwise go unoccupied, making it ideal for hotels with fluctuating occupancy rates and a high volume of unsold rooms. Oaky's strength lies in boosting revenue through personalized, automated upselling of upgrades and services, which is particularly effective for hotels with a keen focus on ancillary income and high guest interaction.
HotelFlex has a broad appeal for hotels seeking to maximize occupancy, especially those with unpredictable demand or highly variable check-in/check-out patterns. Oaky appeals more to hotels aiming to increase revenue from each booking by engaging guests with relevant offers, making it suitable for properties that prioritize guest experience and targeted marketing. Which problem is most pressing for your team: filling rooms or increasing guest spend?
If your hotel needs to better utilize its existing inventory and deal with irregular occupancy, HotelFlex is the more suitable choice. It’s designed to fill gaps in your room availability and enhance guest satisfaction by accommodating their travel schedules. Conversely, if your hotel aims to increase per-guest revenue through personalized offers, Oaky is the better fit, especially if you seek automation, segmentation, and dynamic pricing.
For hotels with a small, fluctuating occupancy base or those in markets with high no-show rates, HotelFlex can help generate immediate revenue from otherwise empty rooms. Larger, revenue-driven properties with a focus on ancillary sales will benefit more from Oaky’s extensive upselling features, including multi-channel delivery and offer experimentation.
Oaky’s user interface consistently receives a higher usability rating, standing at 4.84/5, with many reviews describing it as intuitive and quick to learn. Customers highlight that onboarding is straightforward, and staff adoption is high due to its simplicity. HotelFlex, with a 0/5 rating, provides no specific usability data, but its primary focus on inventory management suggests a more technical setup that might require more training.
Oaky’s support team is praised for quick responses and helpful guidance, which accelerates staff engagement and campaign execution. HotelFlex’s lack of recent reviews and rated support suggests less confidence in its ease of use. Edge: Oaky.
Oaky offers a comprehensive suite of 10 unique features beyond basic upselling, including offer experimentation, multi-channel delivery, dynamic upgrade pricing, offer templates, offer orchestration, automated task routing, segmentation, and ancillary product merchandising. HotelFlex provides only two core features—inventory management and revenue optimization through accommodation adjustments—without additional upselling capabilities.
If your goal is to run sophisticated, segmented campaigns with multiple communication channels, Oaky’s feature set clearly outperforms. HotelFlex’s limited feature scope makes it less suitable if you want to diversify your upsell strategies. Edge: Oaky.
Oaky’s customer support is rated at 4.87/5, with reviews emphasizing friendly, knowledgeable teams that resolve issues quickly. One reviewer highlights, “Prompt assistance is a particular strength,” which enables hotels to deploy features confidently. HotelFlex has no recent support ratings or reviews, raising questions about the quality and responsiveness of its service.
Given the importance of ongoing support for complex integrations and feature management, Oaky’s support reputation makes it the safer choice. Edge: Oaky.
Oaky boasts 54 verified integrations with major PMS and hotel technology providers, including SiteMinder, Oracle Hospitality, and Mews. HotelFlex has only three verified partners, with shared integrations limited to SiteMinder, Oracle Hospitality, and Mews. The extensive integration network of Oaky facilitates smoother deployment and more reliable data flow.
If your hotel relies on multiple integrated systems, Oaky’s broader ecosystem reduces friction and enhances operational efficiency. HotelFlex’s limited options may require manual workarounds. Edge: Oaky.
Oaky’s more recent reviews and high ratings (4.84/5 overall, 9.65/5 NPS) reflect strong hotelier satisfaction, especially among independent and branded hotels. Larger properties and chains in Europe, North America, and Asia Pacific frequently commend Oaky’s automation and revenue uplift.
HotelFlex, with no recent reviews or ratings, cannot compete in confidence or reputation. The volume and recency of Oaky’s positive feedback make it the preferred choice for hoteliers prioritizing proven results. Edge: Oaky.
HotelFlex’s pricing details are not publicly available, suggesting a bespoke or enterprise-level model. Oaky charges a base price of $300 per month, with no free tier, offering transparent, predictable costs suitable for budgeting.
If you require clarity on investment, Oaky’s straightforward pricing makes it easier to evaluate ROI. HotelFlex’s opaque pricing might be a barrier for smaller properties or those seeking clear cost expectations.
Not ideal if your goal is to increase revenue through guest engagement rather than inventory management.
Not ideal if your property relies solely on occupancy rates and does not prioritize ancillary revenue.
Oaky and HotelFlex address different revenue challenges; your choice should align with your hotel’s primary focus. HotelFlex offers a strong inventory management solution for filling unsold rooms, particularly useful if your occupancy fluctuates significantly. Oaky is an all-in-one upselling platform, ideal if your goal is to increase revenue from each booking, improve guest experience, and automate communication.
If your hotel’s priority is maximizing occupancy and managing irregular demand, HotelFlex might be more appropriate. But if boosting ancillary revenue through personalized, multi-channel upselling is your goal, Oaky’s proven features and extensive support make it the clear winner. For most hotels looking for proven, recent reviews and a broad ecosystem, Oaky is the stronger option.
Upselling Software pricing is rarely straightforward. Here is what we know from each vendor's public pricing data. Always request a custom quote for your property size.
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| Starting Price | — | From $300/mo |
According to HTR's product database, HotelFlex and Oaky by Plusgrade share 2 features. Here are the key differences — features one has that the other lacks.
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| Automated Fulfillment Task Routing | ||
| Dynamic Upgrade Pricing | ||
| Multi-Channel Delivery (Email, SMS, WhatsApp, Chat) | ||
| Offer Experimentation & A/B Testing | ||
| Offer Orchestration (Booking → Pre-Arrival → Arrival → In-Stay → Post-Stay) | ||
| Offer Templates Library |
We analyzed 8 verified case studies to compare what hotels actually achieve with each platform across four key business objectives.
No published case study for this goal yet.
"With Oaky, guests can clearly see what extra services or products we have to offer. By looking through all our services they can choose to add things they did not even know they wa..."
No published case study for this goal yet.
"Oaky allows us to be creative and feature relevant and exciting offers to our guests. The solution is extremely flexible and easy to use, helping our teams to offer unique services..."
What hoteliers love
Reviewers consistently commend Oaky's ability to streamline and enhance the upselling process, making it easier to generate additional revenue. Users... Reviewers consistently commend Oaky's ability to streamline and enhance the upselling process, making it easier to generate additional revenue. Users appreciate the ease of promoting room upgrades and packages, contributing significantly to boosting hotel revenue.
The platform's user-friendly design is repeatedly praised, allowing both new and experienced users to engage effectively with the software. This acces... The platform's user-friendly design is repeatedly praised, allowing both new and experienced users to engage effectively with the software. This accessibility helps hotels employ upselling strategies without extensive training.
Oaky's customer support is largely praised for its efficiency and knowledge, with special mention of certain team members who consistently ensure a po... Oaky's customer support is largely praised for its efficiency and knowledge, with special mention of certain team members who consistently ensure a positive experience. Prompt assistance is highlighted as a particular strength.
Where hoteliers push back
Several reviews identify challenges with Oaky's reporting system, noting a need for improvements in clarity and integration with existing hotel system... Several reviews identify challenges with Oaky's reporting system, noting a need for improvements in clarity and integration with existing hotel systems. Users express difficulty in accessing comprehensive data on upselling activities.
Oaky offers seamless integration with many hotel property management systems, enhancing real-time data synchronization. Issues do exist, however, as s... Oaky offers seamless integration with many hotel property management systems, enhancing real-time data synchronization. Issues do exist, however, as some users encounter complications requiring manual input, specifically when tracking upselling offers.
Ranks higher for
Unique capabilities
Where the ratings diverge most
It depends on your requirements. HotelFlex and Oaky by Plusgrade share many core Upselling Software features, but each has unique capabilities. HotelFlex offers 3 verified integration partners, while Oaky by Plusgrade offers 54. Review the feature comparison above to see where they differ before switching.
Small hotels should prioritize ease of use and fast onboarding. Oaky by Plusgrade leads in ease of use at 4.8/5 vs 0.0/5. Look for transparent pricing and a trial or demo option. Filter reviews on each product page by property size to hear from hotels like yours.
HotelFlex: No. Oaky by Plusgrade: No. Neither product currently offers a free tier. Most Upselling Software vendors offer demos or trials — request one from each to evaluate before committing.
The HT Score is a composite ranking that considers 4 criteria groups and over a dozen variables to help hoteliers objectively compare hotel technology products. HotelFlex has an HT Score of 0 and Oaky by Plusgrade has 95. Here is how the score is calculated.
| Criteria Group | Weight | What It Measures |
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| Customer Ratings & Reviews |
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How highly do users recommend this product? Ratings Score, Review Volume, Share of Voice, Review Depth, Review Recency, Success Stories ▾ The most heavily weighted factor. Analyzes average satisfaction ratings (likelihood to recommend, ease of use, support, ROI), total review count relative to category peers, review recency (at least 20 reviews in the trailing 6 months), and share of voice across unique hotel clients to detect selection bias. |
| Partner Ecosystem |
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How highly do tech partners recommend this company? Partner Recommendations, Integration Quantity, Integration Quality ▾ Evaluates partner recommendations as expert votes of confidence, the number of verified integrations, and ecosystem quality — the average HT Scores of integration partners. Products with higher-quality integration ecosystems are more likely to deliver a connected tech stack. |
| Customer Centricity |
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How customer-centric is this organization? Certified Support, Review Consistency, Profile Completeness ▾ Assesses whether the company has earned HTR Customer Support Certification, maintains consistent review collection over time (an indicator of feedback-driven culture), and keeps product profiles complete with capabilities, screenshots, pricing, and features. |
| Reach, Staying Power & Resources |
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How extensive is this company's reach and resourcing? Geographic Reach, Staying Power, Company Resources, Trending Score ▾ Measures global presence (countries and regions served), years in business as a stability proxy, team headcount as a resource proxy, and a trending score based on trailing-twelve-month buyer inquiries, reviews, partner recommendations, and press activity. |
Customer ratings and reviews are by far the most important factor in the HT Score algorithm. HTR does not accept payment for higher rankings. All reviews are verified — only hotel industry practitioners with confirmed affiliations can submit ratings. View full HT Score methodology →
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