BlitzAPI vs Invoice Guru

Smart ICP Targeting & People Search

This feature allows you to instantly find your ideal decision-makers using a sophisticated search algorithm. You can define specific parameters like job title, industry, company size, and location. The API then returns prioritized and ranked results, ensuring your team focuses on the highest-potential leads first, eliminating time wasted on unqualified prospects.

Verified Email & Phone Enrichment

Go beyond basic data with APIs that deliver verified, accurate professional email addresses and direct-dial phone numbers. BlitzAPI's enrichment ensures the contact information you append to your leads is current and correct, dramatically improving connect rates and the overall effectiveness of your email and phone outreach campaigns.

Catch-All Email Validation

This advanced validation technology identifies and verifies catch-all email domains with over 98% accuracy in real-time. It prevents your campaigns from being sent to generic inboxes that rarely get checked, protecting your sender reputation, saving credits, and ensuring your messages reach real people.

Unlimited Data Enrichment via API

BlitzAPI provides a flexible, API-first architecture that allows for unlimited enrichment of contact and company data. With simple API calls, you can enrich records with emails, phones, LinkedIn profiles, company technographics, and firmographics at massive scale, seamlessly piping clean data into your existing CRM and workflow tools.

Lightning-Fast, Mobile-First Invoice Creation

Designed for use on a smartphone, the app allows you to generate a complete, professional invoice in under 60 seconds. Simply enter client details and items on-site. The app automatically adds your logo, company info, VAT, payment terms, and due dates, ensuring every invoice is consistent and polished, directly from your pocket.

AI-Powered OCR Receipt Scanner

Eliminate manual data entry and lost receipts. Simply snap a photo of any paper receipt, and Invoice Guru's advanced AI (Optical Character Recognition) technology instantly reads and extracts all key details—date, vendor, amount, tax—saving it as a categorized expense entry. This transforms receipt management from a chore into a quick, automated process.

Smart Bank Integration & Payment Tracking

Connect your business bank account securely for automatic payment reconciliation. Invoice Guru matches incoming bank transactions with your unpaid invoices in real-time. This gives you a clear, automatic overview of which clients have paid and which invoices are overdue, eliminating manual cross-checking and guesswork.

Future-Proof Tax Compliance (MTD, KSeF)

Invoice Guru is architected to adapt to evolving digital tax laws. It is fully equipped to handle submissions for the UK's Making Tax Digital (MTD) for VAT and is prepared for upcoming mandates like Poland's KSeF. This means you can continue using one trusted platform without fear of non-compliance or needing a last-minute software switch.

Automating Outbound Sales Prospecting

Sales development representatives (SDRs) can automate the lead list building process. By integrating BlitzAPI's search and enrichment APIs into their workflow, they can automatically generate targeted prospect lists with verified contact information, allowing them to spend more time selling and less time on manual, error-prone data hunting.

Building Scalable Account-Based Marketing (ABM) Campaigns

Marketing teams can use BlitzAPI to identify and enrich key contacts within target accounts for personalized ABM campaigns. The ability to accurately find decision-makers and validate their contact details ensures that high-value marketing materials and outreach land in the right inbox, increasing engagement and conversion rates.

Cleansing and Augmenting CRM Data

Revenue Operations (RevOps) teams can implement automated workflows to cleanse and augment existing CRM records. By running stale contact lists through BlitzAPI's enrichment and validation APIs, they can update outdated information, remove bounce-prone emails, and fill in missing data points, ensuring the entire GTM team works from a single source of truth.

Powering GTM Agency Service Delivery

GTM and lead generation agencies can leverage BlitzAPI as their core data infrastructure to deliver consistent, high-quality results for clients. The scalable APIs allow them to build custom prospecting and enrichment pipelines for different client needs, all while maintaining high deliverability standards and maximizing the ROI on their data spend.

For On-Site Tradespeople Closing a Job

A plumber finishes a repair. Before leaving the client's home, they open Invoice Guru on their phone, select the client from their list, add the service items, and send a professional invoice via email in under a minute. The client receives it instantly, enabling faster payment and allowing the plumber to move directly to the next job.

For Managing Business Expenses and Receipts

A decorator purchases materials from multiple suppliers throughout the week. Instead of stuffing receipts in a glove box, they use the OCR scanner in Invoice Guru to photograph each one on the spot. All expenses are automatically logged and categorized, creating a perfect digital record for VAT returns and accountant reviews.

For Ensuring HMRC MTD Compliance

A small UK-based electrical contractor needs to comply with Making Tax Digital for VAT. By using Invoice Guru, all their sales and purchase data is digitally recorded within a compliant software. They can generate the required digital records and submit their VAT return directly to HMRC through the app, avoiding penalties and manual spreadsheet work.

For International or Multi-Currency Service Providers

A freelance consultant or tradesperson working with clients across Europe can create invoices in the client's local language and currency. Invoice Guru supports over 12 languages and multiple currencies, ensuring professional, clear invoicing that meets local expectations and simplifies cross-border payments.

BlitzAPI operates on a transparent, pay-for-what-you-use credit system, designed to scale with your needs. The platform emphasizes that you only pay for verified results, not for bad leads. They offer a free tier to get started, which includes 1,000 free credits for new users to test the APIs with no credit card required. For detailed pricing plans, tiers, and volume discounts, it is recommended to visit the official BlitzAPI pricing page or book a free demo to discuss custom enterprise requirements tailored to specific workflow volumes and use cases.

Invoice Guru offers simple, transparent pricing with a free tier and two paid plans, billed monthly or annually with a 20% discount for annual billing.

Starter Plan: Free Forever. Includes up to 10 invoices, PDF download, and bank transfer payment details.

Basic Plan: €9.99/month. Perfect for beginners, with unlimited invoices & quotes, client & item management, 7 PDF templates, multi-currency support, custom branding, expense tracking, and e-invoicing capabilities.

Pro Plan: €14.99/month. The most popular choice, includes everything in Basic plus full automation: banking integration & reconciliation, AI reports, OCR receipt scanning, Stripe & QR code payments, automatic reminders, accountant access, and direct MTD VAT UK submission.

BlitzAPI is the essential API engine for modern go-to-market (GTM) teams, designed to automate and scale prospecting workflows with clean, verified B2B data. It solves the critical problem of data decay and inaccuracy that plagues outbound sales, marketing, and revenue operations. By providing a suite of powerful APIs, BlitzAPI allows teams to seamlessly search for and enrich contact and company profiles, validate work emails with industry-leading accuracy, and retrieve direct phone numbers. The platform is built on a core philosophy of prioritizing data quality and deliverability over sheer volume, ensuring that every credit spent contributes directly to actionable outreach. It is the ideal infrastructure for GTM agencies, outbound sales teams, and RevOps professionals who need to implement repeatable, scalable playbooks without being bogged down by manual data verification or integration headaches. With access to over 360 million verified contacts and 60 million company profiles, BlitzAPI empowers organizations to target their ideal customer profile (ICP) with precision, enhance operational efficiency, and drive better results with significantly less effort.

Invoice Guru is a mobile-first invoicing and tax compliance platform engineered specifically for the demanding, on-the-go reality of tradespeople and small service businesses. It solves the core administrative pain points faced by professionals like painters, plumbers, electricians, and decorators who need to manage their business finances from the job site, not a desk. The core value proposition is immense time savings and guaranteed compliance. Users can create and send professional, branded invoices in under 60 seconds, dramatically reducing evening paperwork. Beyond speed, Invoice Guru automates the entire financial workflow: it tracks payments, matches them to invoices via bank integration, and uses AI-powered OCR to scan and log receipts instantly. Critically, it is built with mandatory digital tax reporting regulations like the UK's Making Tax Digital (MTD) and Poland's KSeF in mind, ensuring users remain compliant now and in the future without switching tools. Developed by a tradesperson who understands these challenges intimately, Invoice Guru is more than an app; it's a practical business partner that streamlines admin to let professionals focus on their craft and grow their business.

What makes BlitzAPI different from other data providers?

BlitzAPI is built as an API-first engine, not just a data source. It prioritizes verified, deliverable data over sheer volume, ensuring you pay only for accurate results. Its unique features like high-accuracy catch-all validation and a flexible, integration-friendly architecture are designed to fit into your existing workflows, not force you to adapt to a rigid platform.

How accurate is the email validation, especially for catch-all domains?

BlitzAPI's email validation, particularly for catch-all domains, boasts an accuracy rate of over 98%. This is achieved through real-time verification technology that goes beyond standard syntax checks to determine the actual deliverability of an email address, drastically reducing bounce rates and protecting your sender reputation.

Can I integrate BlitzAPI with my existing tech stack?

Absolutely. BlitzAPI is built for seamless integration with a modern tech stack. It offers clean, well-documented REST APIs that can be easily connected to popular CRM platforms like Salesforce and HubSpot, marketing automation tools, data warehouses, and custom internal applications, allowing you to automate data flows without disruption.

What is the "Waterfall ICP" approach?

The Waterfall ICP approach is a smart targeting method where you define your ideal customer profile with multiple, prioritized personas. BlitzAPI's search will first look for contacts matching your primary persona. Once your quota for that segment is met, it automatically cascades to the next priority persona, ensuring you always get the most relevant leads first and maximize the efficiency of your credit usage.

Is Invoice Guru really free to start?

Yes, Invoice Guru offers a Free Forever Starter Plan. This plan allows you to create and download up to 10 invoices as PDFs, giving you full access to test the core invoicing functionality and user experience without any financial commitment or need for a credit card.

How does the app help with Making Tax Digital (MTD) compliance?

Invoice Guru is recognized as MTD-compatible software by HMRC. It digitally records all your invoices and expenses, maintains your VAT digital records, and can directly submit your VAT return to HMRC from within the app. This ensures you meet all the legal requirements for MTD for VAT seamlessly.

Can I use Invoice Guru on a computer as well as a phone?

While Invoice Guru is designed with a mobile-first philosophy for ultimate on-site convenience, it is a fully responsive web application. This means you can also access and manage your account, create invoices, and run reports from any desktop or laptop computer's web browser.

What happens if I need to issue more than 10 invoices?

The free plan is limited to 10 invoices. If your business grows beyond this, you can easily upgrade to the affordable Basic or Pro plans, which offer unlimited invoices, advanced features like client management, more PDF templates, and automated tools like bank integration and payment reminders.

BlitzAPI is a B2B data API platform that provides clean, verified contact and company information to fuel go-to-market strategies. It helps sales and marketing teams enrich data, validate emails, and find phone numbers to streamline prospecting and outbound operations. Users often explore alternatives for various reasons. These can include budget constraints, the need for different feature sets like built-in CRM tools, or specific integration requirements with their existing tech stack. The search for a better fit is a normal part of evaluating any business tool. When choosing an alternative, focus on data accuracy and freshness, as poor data wastes time. Prioritize platforms with a deliverability-first approach to ensure emails reach inboxes. Finally, consider ease of integration and whether the tool's capabilities align with your specific workflow needs for scaling operations efficiently.

Invoice Guru is a mobile-first invoicing app designed specifically for UK tradespeople and small service businesses. It falls into the business finance and productivity category, focusing on letting professionals create, send, and track invoices in under 60 seconds directly from their phone. Users often explore alternatives for various reasons. This could be due to budget constraints, a need for more advanced features like complex inventory management, or a preference for a desktop-centric platform over a mobile app. Some businesses may also require integration with specific accounting software not currently supported. When evaluating other options, it's crucial to consider your primary workflow. If you're always on the move, a robust mobile experience is essential. Look for core features like fast invoice creation, payment tracking, and receipt scanning. Also, consider long-term needs like compliance with regulations such as Making Tax Digital (MTD) to avoid switching platforms later.