Caller vs Dokta

Browser-Based WebRTC Calling

Caller's core technology is built on the WebRTC framework, allowing users to initiate and receive voice calls directly from their web browser without any plugins or downloads. This ensures maximum compatibility across devices and operating systems, from laptops to tablets. The architecture leverages secure peer-to-peer-like connections optimized by global media servers, ensuring low-latency, high-definition audio that bypasses the limitations and costs of traditional Public Switched Telephone Network (PSTN) routing.

Transparent Pay-As-You-Go Billing

The platform operates on a pure usage-based billing model with no monthly subscriptions, contracts, or hidden fees. Users pre-pay for credits that never expire and are charged only for completed call minutes at published rates starting from $0.02 per minute. This financial model, powered by a real-time billing API, provides complete cost control and transparency, making it ideal for variable usage patterns and for businesses looking to optimize communication expenses with precise, auditable spending.

Global Number Provisioning API

Beyond outbound calling, Caller offers an API-driven service for provisioning dedicated virtual phone numbers in countries like the US and UK. Users can acquire local, toll-free, or mobile numbers to use as a professional caller ID or for establishing a business presence. This feature integrates seamlessly with the core calling stack, enabling instant activation and management of numbers directly from the user dashboard for use in outbound communication strategies.

Enterprise-Grade Security & Encryption

All communication on the Caller platform is secured with bank-level SSL/TLS 1.2+ encryption, ensuring that both signaling (call setup) and media (audio streams) are protected from interception. This end-to-end security model safeguards sensitive business conversations and payment transactions. The platform's infrastructure is designed with privacy-by-design principles, requiring no personal phone verification for outbound calls, which enhances user anonymity and simplifies onboarding.

AI-Powered Document Analysis Engine

Dokta's foundational feature is its advanced AI processing pipeline. Utilizing Claude (Anthropic) for intelligence and robust OCR, the system can ingest photos, scans, or PDFs and return a fully analyzed document in under 60 seconds. It automatically classifies the document type (invoice, quote, contract), extracts critical data fields like amounts, due dates, client details, and tax information, and structures this data for immediate use within the platform, requiring zero manual input for data extraction.

Automated Invoice & Quote Lifecycle Management

This feature provides a complete, integrated workflow for sales documentation. Users can generate professional invoices and quotes within the platform. For freelancers, it supports Time & Materials (TJM) contracts with automatic monthly invoicing. A key integration is the online quote acceptance system; sent quotes include a direct link for client approval, enabling one-click conversion of an accepted quote into a formal invoice, streamlining the deal-to-cash cycle.

Real-Time Cash Flow & Anomaly Dashboard

Dokta aggregates financial data from all processed documents to deliver a comprehensive, real-time overview of business health. The dashboard visualizes key metrics like invoiced vs. collected revenue, overdue payments, and VAT liabilities over a 12-month period. Furthermore, its integrated anomaly detection system monitors for risks such as changed IBANs, duplicate invoices, inconsistent VAT, and missing numbering, providing proactive financial governance.

Intelligent Client & Supplier Database

The platform automatically constructs and enriches a relational database of business contacts from every document processed. It uses SIRET numbers (French business registry) to auto-complete company information. For each client or supplier, Dokta maintains a complete history of interactions and implements a payment scoring system, offering valuable insights into payment behaviors and centralizing all entity-related data without manual CRM entry.

Distributed Tech Team Collaboration

Remote engineering and development teams use Caller for daily stand-ups, pair programming sessions, and urgent discussions with international colleagues or clients. The browser-based nature eliminates compatibility issues across different OS environments (Linux, macOS, Windows) and allows developers to jump into a call directly from a shared link or their workflow tool (like Slack or a project management dashboard) without context-switching to a separate app.

Global Customer Support & Sales Outreach

Sales and support teams leverage Caller to make cost-effective outbound calls to customers and prospects in over 200 countries. The clear HD audio quality ensures professional conversations, while the pay-as-you-go model aligns perfectly with variable call volumes. Teams can use dedicated international numbers as their caller ID to build local trust and increase answer rates, all managed through a centralized web interface.

Freelancer & Digital Nomad Operations

Freelancers, consultants, and digital nomads who travel frequently use Caller as their primary communication tool. It provides a consistent, reliable calling interface accessible from any browser worldwide, avoiding expensive international roaming charges and SIM card swaps. They can maintain a professional presence by using a dedicated number from their home country while calling clients or service providers globally at local-rate prices.

Automated System Integration & Alerting

Developers integrate Caller's capabilities into custom applications and automated systems for voice-based alerts and notifications. Using its API, systems can programmatically initiate calls to deliver critical alerts (e.g., system downtime, security breaches, or appointment reminders) to on-call personnel or end-users. This use case highlights the platform's utility as a programmable communication layer within a larger software stack.

Freelance IT Developer / Consultant

For freelancers working on TJM or retainer contracts, Dokta automates the entire billing cycle. The platform can be configured to automatically generate monthly invoices based on contract terms, track their payment status, and send polite, professional payment reminders. This allows the developer to focus purely on coding while ensuring cash flow is managed systematically and reliably, directly from their document hub.

Creative Project Freelancer (Designer, Photographer)

Dokta streamlines the project-based workflow from proposal to payment. The freelancer creates a quote in Dokta and sends it via a client-facing acceptance link. Upon client approval, the quote is converted to an invoice with a single click. The platform then tracks this invoice, manages deadlines, and automates follow-ups, ensuring the creative professional can manage all client-facing financial documents within one integrated system.

Auto-Entrepreneur / Micro-Enterprise

This user benefits from Dokta's simplicity and compliance-focused features. The platform ensures invoices are correctly formatted, tracks all receipts and payments in one place, and provides clear visibility into turnover relative to tax thresholds. Automated alerts for URSSAF (French social charge) deadlines help prevent missed payments, making administrative compliance straightforward and integrated into daily document activity.

Growing Small Business (SMB)

For small teams, Dokta acts as a unified document and financial command center. It handles incoming supplier invoices, outgoing client invoices, and contracts. The real-time cash flow dashboard gives leadership an instant snapshot of financial health, while automated payment reminders improve collection rates. The ability to export clean CSV data for their accountant simplifies period-end reconciliation, integrating document management with broader financial oversight.

Caller operates on a transparent, credit-based pay-as-you-go model with no monthly subscriptions or minimum fees. Calling rates vary by destination country and start as low as $0.01-$0.02 per minute to many destinations, including the United States and Canada. Users pre-purchase credit bundles, which never expire. For dedicated phone numbers (e.g., US local, UK toll-free), there is a separate monthly subscription fee starting from $1.99 per number per month. All pricing is listed publicly on the platform, and users are only charged for successfully connected call minutes.

Dokta offers transparent, tiered pricing with a free plan to start. All paid plans are offered on a monthly or annual basis, with an annual subscription providing a 17% discount.

Discovery Plan: €0/month. Includes 15 documents per month (max 5 pages per doc), a free invoice generator, unlimited client database, and requires no credit card to start.

Starter Plan: €9/month. Designed for auto-entrepreneurs, it includes 50 documents/month (20 pages per doc), automated payment reminders, expense tracking, CSV accounting export, and email support.

Freelance Plan: €12/month. Tailored for freelancers with recurring contracts, this popular plan includes 100 documents/month and features like automatic invoice generation from TJM contracts.

Caller is a modern, browser-based Voice over IP (VoIP) platform engineered to replace traditional telephony and complex communication stacks. It provides a pure web application for making high-definition voice calls to any phone number globally, eliminating the need for physical hardware, mobile apps, or desktop software installations. Built on a cloud-native architecture, Caller leverages WebRTC (Web Real-Time Communication) protocols to facilitate real-time audio streaming directly within any modern web browser like Chrome, Firefox, or Edge. The platform is designed for developers, remote teams, freelancers, and businesses that require seamless, scalable, and cost-effective international communication integrated directly into their workflow. Its core value proposition lies in its frictionless setup, transparent pay-as-you-go pricing model, and enterprise-grade audio infrastructure, offering up to 90% savings compared to legacy carriers while maintaining professional call quality and robust security with SSL/TLS encryption.

Dokta is an AI-native document management platform engineered to automate the administrative backbone for freelancers, solo entrepreneurs, auto-entrepreneurs, and SMBs. It functions as a central nervous system for business documents, leveraging a sophisticated tech stack to eliminate manual data entry and process fragmentation. At its core, Dokta's AI engine, powered by Claude (Anthropic), performs OCR and intelligent classification to read, categorize, and extract key data from any uploaded invoice, quote, or contract in under 60 seconds. The platform then manages the entire document lifecycle: from creating professional invoices and quotes, tracking payments, and automating reminders, to managing contracts, deadlines, and generating actionable tasks. It integrates these workflows by automatically building a searchable client and supplier database from document interactions and provides real-time cash flow dashboards. With a focus on European compliance, data is 100% GDPR-compliant and hosted on AWS in Paris, featuring AES-256 encryption. Dokta's value proposition is clear: replace hours of weekly manual admin with a seamless, integrated system that turns documents into actionable business intelligence.

What technology does Caller use for browser-based calling?

Caller is built on the standardized WebRTC (Web Real-Time Communication) API, which is natively supported by all major modern browsers. This technology handles the real-time capture and encoding of audio directly in the browser, establishes a secure peer-to-peer connection (facilitated by STUN/TURN servers for network traversal), and manages the streaming of high-definition voice data over UDP for optimal performance and low latency, eliminating the need for any external software.

Do I need a phone number or SIM card to use Caller?

No, you do not need a personal phone number or SIM card to make outbound calls with Caller. You simply sign up with an email address, add credits, and start calling. Your caller ID can be set to a private number or to a dedicated virtual number purchased through Caller's number provisioning service. This makes it ideal for privacy and for users who want a separate business line.

How does the pay-as-you-go credit system work?

You pre-purchase credits into your Caller account wallet via secure payment methods. These credits have no expiration date. When you make a call, the platform's billing system deducts credits in real-time based on the per-minute rate of the destination country and the exact duration of the connected call. You only pay for completed minutes, and you can track your remaining balance and usage history in your account dashboard at any time.

Can I use Caller on my mobile device?

Yes, Caller is fully functional on mobile devices. Because it is a web application built on WebRTC, it works within the mobile web browsers (like Safari on iOS or Chrome on Android) on smartphones and tablets. There is no native app to download from an app store; you simply navigate to the Caller website, log in, and the calling interface will be optimized for your mobile screen, providing the same features and call quality.

How does Dokta ensure the security and privacy of my documents?

Dokta is built with a security-first architecture. All data is hosted on Amazon Web Services (AWS) in their Paris region, ensuring it remains within the European Union. The platform is fully compliant with GDPR regulations. Documents and data are protected using AES-256 encryption, both in transit and at rest. This technical stack provides enterprise-grade security tailored to the compliance needs of European freelancers and businesses.

What AI model does Dokta use, and how accurate is the data extraction?

Dokta utilizes Claude, Anthropic's advanced AI model, as the intelligence layer for document understanding and data extraction. Combined with high-performance OCR, this stack enables highly accurate classification and parsing of complex document layouts. The system is specifically trained on financial and administrative documents, achieving rapid analysis in under 60 seconds with minimal error, though users always have a final validation step to confirm extracted data.

Can Dokta integrate with my existing accounting software or other tools?

While Dokta is designed as a comprehensive, standalone platform, it offers robust export functionality to ensure compatibility with your existing workflow. You can export all financial data, including invoices, client lists, and transaction records, as a clean CSV file. This format is universally accepted by all major accounting software packages (like Sage, QuickBooks, etc.), allowing for seamless data transfer during bookkeeping or tax preparation periods.

What happens if I exceed my monthly document limit on my plan?

Each Dokta plan includes a set number of documents that can be processed per month. If you exceed this limit, the platform will notify you. You will then have the option to upgrade to a higher-tier plan that offers a larger document volume. This scalable model ensures you only pay for the capacity you need, allowing the platform to grow in tandem with your business's document processing requirements.

Caller is a browser-based international calling platform, operating within the productivity and management software category. It enables instant voice calls globally without app downloads, using a pay-as-you-go model for cost-effective communication. Users often explore alternatives to find solutions that better align with their specific tech stack, such as native mobile app integration, API access for custom workflows, or bundled subscription models. Needs can vary based on required call features, compliance standards, and existing communication infrastructure. When evaluating an alternative, prioritize core technical compatibility: does it integrate with your CRM or support systems? Assess the underlying infrastructure for call quality and uptime guarantees. Finally, scrutinize the pricing architecture for transparency and scalability against your projected usage patterns.

Dokta is an AI-powered document management platform designed for freelancers, solo entrepreneurs, and SMBs. It automates the lifecycle of business documents like invoices, quotes, and contracts, extracting data, tracking payments, and managing deadlines to reduce administrative overhead. Users often seek alternatives to Dokta for various reasons, including specific budget constraints, the need for different feature sets, or integration requirements with their existing tech stack. Some may require deeper compatibility with certain accounting software, a different pricing model, or a platform hosted outside of the European AWS infrastructure. When evaluating alternatives, key considerations should include the platform's API availability and webhook support for custom automations, its data extraction accuracy and supported file formats, and compliance with regional data sovereignty laws like GDPR. The ideal solution should seamlessly fit into your current workflow without creating new silos of information.