BlitzAPI vs Invoice Guru

Smart ICP Targeting & People Search

Find your ideal customer profile (ICP) instantly with BlitzAPI's powerful search algorithm. Go beyond basic filters to discover decision-makers prioritized and ranked based on relevance to your target persona. This feature allows you to pinpoint the right contacts at the right companies efficiently, ensuring your outreach starts with high-intent leads and eliminating time wasted on unqualified prospects.

Verified Email & Phone Enrichment

Access a database of over 360 million verified B2B contacts. Enrich your existing leads with accurate, deliverable work emails and direct-dial phone numbers. BlitzAPI's commitment to data integrity means you get actionable contact points that actually work, dramatically improving connection rates for your sales and marketing campaigns without the noise of outdated or incorrect information.

Real-Time Catch-All Email Validation

Tackle the challenge of catch-all email domains (like @company.com) with industry-leading accuracy of over 98%. This unique feature validates whether an email address exists on a catch-all server in real-time, preventing bounces and protecting your sender reputation. Never guess if an email will deliver again, ensuring your communications reach the inbox.

Unlimited Data Enrichment via API

Scale your data operations without limits through simple, flexible API calls. Enrich not just emails and phones, but also LinkedIn profiles and comprehensive company data—all from a single platform. This API-first design gives your engineering and ops teams the building blocks to automate entire lead enrichment pipelines, fitting perfectly into your custom workflows.

Mobile-First Instant Invoice Creation

Create and send a fully branded, professional invoice directly from your mobile device in less than a minute. The intuitive app guides you to enter client details and job items swiftly, automatically adding your logo, VAT, payment terms, and due dates. This eliminates the need to wait until you're back at a computer, allowing you to invoice the moment a job is complete and significantly speeding up your cash flow.

AI-Powered OCR Receipt Scanner

Simply snap a photo of any paper receipt with your phone's camera. Invoice Guru's built-in AI (Optical Character Recognition) technology instantly reads all the details—vendor, date, amount, tax—and automatically creates a perfectly categorized expense entry. This feature completely removes the tedious chore of manual data entry, saving hours per week and ensuring your expense records are accurate and up-to-date.

Smart Bank Integration & Payment Tracking

Securely connect your business bank account to enable automatic payment reconciliation. Invoice Guru matches incoming bank transactions with your unpaid invoices in real-time, automatically marking them as paid. This gives you a live, crystal-clear view of your cash flow, showing exactly which clients have paid and which invoices are overdue, all without manual cross-checking.

Automated Compliance & Multi-Language Support

Built for a global workforce, the app automatically ensures your invoices meet local tax laws and upcoming digital reporting mandates like UK MTD and Poland's KSeF. It also supports over 12 languages and multiple currencies, allowing you to easily create professional invoices for international clients with the correct local formats, removing compliance anxiety and language barriers.

Automating Outbound Sales Prospecting

Sales development representatives (SDRs) and outbound teams use BlitzAPI to automate the lead list building process. By integrating the People Search and Enrichment APIs into their CRM or sales engagement platform, they can automatically generate targeted prospect lists with verified contact information, allowing reps to focus on selling rather than manual data hunting and verification.

Building Scalable Lead Enrichment Pipelines

Revenue Operations (RevOps) and Growth teams implement BlitzAPI as the core data layer in their marketing automation stacks. Every new lead captured from a website form, event, or campaign can be instantly enriched with verified company and contact details via API, ensuring clean, actionable data flows into their systems for personalized nurturing and scoring.

Enhancing Account-Based Marketing (ABM) Campaigns

Marketing teams executing ABM strategies leverage BlitzAPI for precise targeting. They can identify and enrich contacts within specific target accounts, ensuring their personalized marketing campaigns reach the actual decision-makers with accurate information, leading to higher engagement and conversion rates for high-value accounts.

Validating and Cleaning Existing CRM Data

Companies with large, aging CRM databases use BlitzAPI's validation and enrichment endpoints to perform data hygiene at scale. They can batch-process existing contacts to verify email deliverability, update job changes, and fill in missing phone numbers, revitalizing their lead database and improving the effectiveness of all downstream marketing and sales activities.

On-Site Job Completion and Immediate Invoicing

A plumber finishes a repair at a client's home. Before even packing up their tools, they open the Invoice Guru app on their phone, select the client from their list, add the service items, and tap send. The client receives a professional PDF invoice via email instantly. This immediacy impresses clients and dramatically shortens the payment cycle, improving business cash flow.

Streamlining Expense Management for Tax Time

A painter purchases materials from multiple suppliers throughout the week. Instead of collecting a pile of receipts to manually enter later, they use the OCR receipt scanner feature in the app to photograph each one on the spot. At tax season, all expenses are perfectly logged and categorized, making it effortless to generate reports for their accountant or for HMRC compliance.

Managing International or Multi-Currency Clients

An electrician based in the UK regularly works for clients in other European countries. Using Invoice Guru, they can quickly generate invoices in the client's local language and currency (e.g., Euros), with all date and number formats adjusted automatically. This professionalism facilitates smoother transactions and payments from international customers.

Automated Payment Reconciliation for Busy Tradespeople

A busy landscaping company sends out dozens of invoices per month. By using Invoice Guru's bank integration, their incoming payments are automatically matched and reconciled against outstanding invoices. The business owner no longer spends hours each week checking bank statements; they simply open the app to see a clear, updated overview of their financial status.

BlitzAPI is the essential API engine built for modern Go-to-Market (GTM) teams. It provides instant, programmatic access to a massive database of clean, verified B2B data, transforming manual prospecting into automated, scalable workflows. At its core, BlitzAPI is designed to fuel outbound sales, marketing, and revenue operations by delivering accurate contact and company information directly into your existing tech stack. Its powerful suite of APIs enables teams to search for ideal customers, enrich leads with verified emails and direct phone numbers, validate catch-all domains in real-time, and match LinkedIn profiles—all with a focus on quality and deliverability. Built on an API-first architecture, it integrates seamlessly without forcing you to change your workflow, paying only for successful, verified results. For GTM agencies, outbound sales teams, and RevOps professionals looking to build repeatable, high-performance playbooks with reliable data, BlitzAPI is the infrastructure that powers growth, reduces wasted effort on bad leads, and scales operations effortlessly.

Invoice Guru is a mobile-first invoicing and compliance app built from the ground up for the unique needs of tradespeople and small service businesses. It understands that for painters, plumbers, electricians, and other field-based professionals, the office is often a van or a job site. That's why the app is designed to put powerful invoicing tools directly in your pocket, enabling you to create, send, and manage invoices in under 60 seconds from your smartphone or tablet. The core value proposition is simple: eliminate administrative headaches and get paid faster, all while staying fully compliant with tax regulations like the UK's Making Tax Digital (MTD) and Poland's KSeF. Founded by a tradesperson who lived the pain of clunky, desktop-bound software, Invoice Guru combines real-world automation, AI-powered features like OCR receipt scanning, and smart bank integration to streamline your entire workflow. It's more than just an invoicing tool; it's a comprehensive financial assistant that handles everything from instant quote generation on-site to automatic payment matching and accountant-ready reports, freeing you to focus on the job at hand.

What makes BlitzAPI different from other data providers?

BlitzAPI is built as an API-first infrastructure, not just a data portal. 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 flexible, workflow-agnostic APIs are designed to integrate seamlessly into your existing playbooks without forcing you to adapt to a rigid platform.

How accurate is the email and phone data?

BlitzAPI maintains a database of over 360 million contacts with a focus on quality. The platform is built on deliverability-first practices, resulting in an email deliverability rate of over 98%. Phone numbers are verified as direct lines, not main switchboards, providing higher connect rates for sales teams.

Is there a free trial or plan to get started?

Yes, BlitzAPI offers a free tier to start building. You can get 1,000 free credits to test the APIs with no credit card required. This allows you to experience the speed, accuracy, and ease of integration firsthand before committing to a paid plan.

How easy is it to integrate BlitzAPI into our workflow?

Integration is straightforward due to its API-first design. BlitzAPI provides clean, well-documented REST APIs that can be connected to your CRM, marketing automation platform, or custom internal tools in just a few hours. It's built to fit into your process, not the other way around.

Is Invoice Guru compliant with HMRC's Making Tax Digital (MTD) rules?

Yes, absolutely. Invoice Guru is built with UK compliance as a core feature. The Pro Plan includes direct MTD VAT submission capabilities, ensuring your VAT returns are filed digitally and correctly according to HMRC's requirements. The app is designed to adapt to changing regulations, so you won't need to switch software as rules evolve.

Can I use Invoice Guru for free?

Yes. Invoice Guru offers a Free Forever "Starter" plan, which is perfect for trying out the core invoicing functionality. This plan allows you to create and download up to 10 invoices as PDFs. For unlimited invoices, advanced features like OCR scanning, and full automation, you can upgrade to the affordable Basic or Pro monthly plans.

How does the bank integration work, and is it safe?

Bank integration uses secure, read-only connections via established financial data providers (like open banking APIs). Invoice Guru never has access to your login credentials or the ability to move money. It only imports transaction data to automatically match payments against your invoices, saving you manual reconciliation time. Your financial data is encrypted and protected.

Can I create quotes or estimates with the app?

Yes. Invoice Guru includes offer and quote generation features, allowing you to create professional estimates for potential jobs directly from your mobile device. You can send these to clients and, once approved, convert them into a final invoice with just a few taps, streamlining your entire sales-to-payment workflow.

BlitzAPI is a B2B data API platform designed to provide clean, verified contact and company information. It helps growth and sales teams power their outbound and GTM strategies with accurate data for prospecting and enrichment. Users often explore alternatives for various reasons. These can include budget constraints, the need for different feature sets like CRM-native tools, or specific platform requirements such as a stronger focus on intent data or international coverage beyond what one provider offers. When evaluating other options, key considerations are data accuracy and freshness, deliverability rates for emails, ease of API integration, and the overall cost relative to the volume and quality of data provided. The goal is to find a solution that balances reliability with your team's specific workflow needs.

Invoice Guru is a mobile-first invoicing app designed specifically for UK tradespeople and small service businesses. It falls into the category of business finance tools, focusing on quick, compliant invoice creation directly from a smartphone to streamline on-site billing. Users often explore alternatives for various reasons. These can include budget constraints, the need for specific features not offered, or a preference for a desktop-centric platform over a mobile app. Some businesses might also seek tools that integrate with a broader suite of accounting software. When evaluating other options, key considerations should be mobile usability, compliance with regulations like Making Tax Digital (MTD), and features that save time, such as automated tracking and receipt scanning. The goal is to find a tool that reduces admin work without compromising on professionalism or legal requirements.