Elto Dialer vs Kixie vs Trellus AI: Which is Best for Appointment-Setting Agencies in 2025?

For appointment-setting agencies, the right technology is the engine of growth. In a world where every call counts, AI-powered dialers have become essential for maximizing efficiency, increasing connect rates, and booking more meetings. Three of the top contenders in this space are Elto Dialer, Kixie, and Trellus AI. But with each platform offering a different approach to sales engagement, how do you determine which is the best fit for your agency?

This in-depth comparison will explore the key differences between Elto Dialer, Kixie, and Trellus AI, with a specific focus on the needs of appointment-setting agencies. We will examine their core dialing technology, AI capabilities, pricing, and unique selling points to help you make an informed decision and choose the platform that will best empower your team to succeed.

What is Elto Dialer?

Elto Dialer is an AI-powered parallel dialer that is designed to help sales teams 10x their cold-calling volume. It offers a simple and affordable solution for high-volume outreach, with features like AI parallel dialing, human pickup detection, and seamless integration with Apollo.io. Elto is a great choice for appointment-setting agencies that are looking for a fast, easy-to-use, and affordable way to scale their operations.

What is Kixie PowerCall?

Kixie PowerCall is a comprehensive sales engagement platform that offers a multi-line power dialer, team SMS, and a wide range of other features. It is designed to be an all-in-one solution for revenue teams, with a strong focus on team collaboration, compliance, and CRM integration. Kixie is a good choice for appointment-setting agencies that are looking for a mature and feature-rich platform to manage their entire sales process.

What is Trellus AI?

Trellus AI is an AI-powered sales assistant that is focused on improving the quality of sales calls through real-time coaching and practice. It offers a parallel dialer that can be used directly within your existing sales engagement platform, as well as unique features like voice agents for practice and a "Superhuman for LinkedIn" integration. Trellus AI is the ideal choice for appointment-setting agencies that want to not only increase their call volume but also improve the performance of their reps and the quality of their appointments.

What is the main difference between Elto Dialer, Kixie, and Trellus AI for Appointment-Setting Agencies?

The main difference between these three platforms lies in their core focus and approach. Elto Dialer is focused on providing a simple and affordable solution for high-volume outreach. Kixie is focused on providing a comprehensive, all-in-one platform for sales engagement. And Trellus AI is focused on improving the quality of sales calls through real-time coaching and practice.

Feature Comparison: Elto Dialer vs. Kixie vs. Trellus AI

Feature Set

All three platforms offer a robust set of features, but there are some key differences that are important for appointment-setting agencies to consider. Elto Dialer offers the most affordable solution, with plans starting at just $5 per user per month. Kixie offers the most comprehensive platform, with features like team SMS and a wide range of CRM integrations. And Trellus AI offers the most unique features, with real-time AI coaching and voice agents for practice.

Ease of Use

Elto Dialer is designed to be the easiest to use of the three platforms, with a simple and intuitive interface. Kixie and Trellus AI both have a steeper learning curve, but they also offer more advanced features and customization options.

Security

All three platforms take security seriously and offer features like SOC 2 compliance and GDPR compliance. Kixie also offers a feature called "DNC List Compliance" that can help to ensure that your agency is in compliance with all applicable regulations.

Customization

Kixie offers the most customization options of the three platforms, with the ability to create custom workflows and reports. Elto Dialer and Trellus AI are less customizable, but they are also easier to use and set up.

Integrations

Kixie offers the most integrations of the three platforms, with over 25 CRM integrations. Elto Dialer offers a seamless integration with Apollo.io, which is a popular tool for appointment-setting agencies. And Trellus AI offers integrations with a variety of sales engagement platforms, as well as Google Sheets and GoHighLevel.

Device Accessibility

All three platforms are web-based and can be accessed from any device with an internet connection.

Pricing

Elto Dialer is the cheapest of the three platforms that publicly lists its pricing, with plans starting at just $5 per user per month.

Trellus AI Pricing

Trellus AI offers a transparent, tiered pricing model designed to accommodate both individual users and enterprise teams.

The Free plan provides unlimited call recordings, transcription, AI-generated summaries and follow-up emails, plus 30 free power dials per week at no cost, making it ideal for users wanting to test the platform. The Power plan costs $59.99 per month and includes single-line dialing, voicemail drop on select platforms (Outreach, Salesloft, Apollo), and access to Superhuman for LinkedIn integration, requiring an existing phone system.

The Parallel plan is priced at $149.99 per month and adds multi-line dialing capabilities, voicemail drop across all platforms, unlimited AI practice calls, and 5 additional phone numbers with spam remediation for advanced users.

For teams, Trellus offers custom Business pricing that includes everything in the Parallel plan plus customizable AI research, real-time coaching, team-based analytics, conversational intelligence, and custom reporting—requiring direct contact with their sales team.

Compared to competitors like Elto ($5-$25/month) and Kixie (custom pricing), Trellus positions itself as a premium solution that emphasizes coaching and call quality improvement over pure volume, making it particularly valuable for appointment-setting agencies focused on rep performance and training.

Customer Support

All three platforms offer customer support via email and phone. Kixie also offers dedicated customer success managers for their enterprise customers.

What’s best for your appointment-setting agency?

•Elto Dialer is the best choice for agencies that are looking for a simple, affordable, and easy-to-use solution for high-volume outreach.

•Kixie is the best choice for agencies that are looking for a comprehensive, all-in-one platform to manage their entire sales process.

•Trellus AI is the best choice for agencies that are looking to improve the quality of their appointments and the performance of their reps through real-time coaching and practice.

Frequently Asked Questions

1. What is an appointment-setting agency?

An appointment-setting agency is a company that specializes in setting appointments for other businesses. This can include services like cold calling, lead generation, and appointment scheduling.

2. What are the benefits of using a dialer for appointment setting?

The main benefit of using a dialer for appointment setting is that it can help agencies increase their call volume and book more meetings. This can lead to more clients, more revenue, and a more efficient sales process.

3. What is real-time coaching?

Real-time coaching is a feature that provides sales reps with feedback and suggestions during live calls. This can help reps improve their performance and handle objections more effectively.

4. What is Caller ID health?

Caller ID health is a measure of how likely a phone number is to be flagged as spam. A good Caller ID health score can help to improve connect rates and ensure that your calls are getting through to prospects.