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Average Ratings 0 Ratings

Total
ease
features
design
support

No User Reviews. Be the first to provide a review:

Write a Review

Description

Invoice Master is an online invoicing and simple CRM tool designed specifically for freelancers and small enterprises. Users can easily create and oversee invoices and quotes, monitor expenses, keep track of customer and product information, operate in multiple currencies, and provide public links to documents. The software offers recurring schedules that prepare draft invoices for user approval instead of directly emailing clients or processing charges right away. The Free plan allows for a limited amount of monthly activity. In contrast, the Premium plan enhances functionality with unlimited core records, Stripe-hosted links for invoice payments, options for scheduled sending, notifications, file attachments, documents free of watermarks, and tools for managing payment follow-ups. Additionally, Stripe handles all aspects of checkout, various payment methods, transaction fees, dispute resolution, and payouts to ensure a smooth financial process. This comprehensive functionality makes Invoice Master a valuable asset for managing invoicing and customer relations efficiently.

Description

Stacks is an all-in-one hosted CRM and business workspace that consolidates various functionalities such as customer records, sales pipelines, follow-up tasks, email marketing campaigns, review requests, invoicing, appointment scheduling, support ticket management, and time tracking into a single platform. By providing shared customer records and activity histories, it empowers solo entrepreneurs, freelancers, and small teams to effectively handle leads, sales, billing, bookings, and customer support collaboratively. Users have the ability to manage contacts and deals, design marketing emails, solicit feedback, create estimates and invoices, display their availability, oversee support tickets, and monitor tasks along with billable hours. The core plan offers all seven modules at no cost, accommodating unlimited users and contacts, while the free version includes 50 one-time AI credits, with additional paid plans available for extended AI usage. Additionally, businesses can easily link their own Stripe accounts for payment processing and connect with various supported email providers for seamless delivery. Furthermore, a REST API and MCP endpoint provide scoped access, enabling smooth software integrations for enhanced functionality. This comprehensive approach ensures that users have all the necessary tools to streamline their operations and improve customer relationships.

API Access

Has API No 

API Access

Has API Yes 

Screenshots View All

No images available

Screenshots View All

Integrations

Brevo No 
Model Context Protocol (MCP) No 
Resend No 
SendGrid No 
Stripe No 

Integrations

Brevo Yes 
Model Context Protocol (MCP) Yes 
Resend Yes 
SendGrid Yes 
Stripe Yes 

Pricing Details

Free; Premium $15/month
Free Trial No 
Free Version Yes 

Pricing Details

$0/month
The Free plan costs $0 per month and includes all seven modules, unlimited users and contacts, and 50 one-time AI credits.
Free Trial No 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs No 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Vendor Details

Company Name

Invoice Master

Country

Germany

Website

invoicemaster.org

Vendor Details

Company Name

Vantage Technologies, LLC

Founded

2026

Website

stackscrm.com

Product Features

Billing and Invoicing

Billing Portal No 
Contact Database No 
Contingency Billing No 
Customer Portal No 
Customizable Invoices No 
Dunning Management No 
Hourly Billing No 
Invoice History No 
Mobile Payments No 
Multi-Currency No 
Online Invoicing No 
Online Payments No 
Payment Processing No 
Project Billing No 
Recurring/Subscription Billing No 
Service Ticket Billing No 
Tax Calculator No 

Product Features

CRM

Calendar/Reminder System No 
Call Logging No 
Document Storage No 
Email Marketing No 
Internal Chat Integration No 
Lead Scoring No 
Marketing Automation Integration No 
Mobile Access No 
Quotes / Proposals No 
Segmentation No 
Social Media Integration No 
Task Management No 
Territory Management No 

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