Comparison

Billdu vs Invoice Ninja

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Billdu

Create professional invoices and estimates quickly for your small business. This app helps you get paid faster with online payment options, track expenses by scanning receipts, and manage clients and inventory. It's designed for freelancers and contractors to maintain a professional image and streamline billing.

Highlights
  • Customizable invoice templates
  • Instant estimates and invoices
  • Online payment processing
  • Receipt scanning for expense tracking
  • Client and inventory management
  • Multi-device synchronization
Features
Currently charting
Read full description

Billdu is your all-in-one invoice maker, estimate generator, and billing app designed for small businesses, contractors, and freelancers in the US. Whether you’re creating a simple invoice, a professional estimate, or tracking receipts, Billdu makes it fast, easy, and reliable. Why choose Billdu? • Customizable Invoice Templates – Personalize with your logo, colors, and signature. Choose from professional layouts that impress clients. • Instant Estimates & Invoices – Create and send documents right after the job is done. • Get Paid Faster – Enable Stripe-powered Online Payments to accept credit cards, Apple Pay, Google Pay, and other popular payment methods. • Expense Tracking – Scan receipts, categorize expenses, and keep your business finances organized. • Contractor-Friendly Tools – Perfect for construction, plumbing, electrical, and service-based businesses. • Multi-Device Sync – Access your account and data from iPhone, iPad, or desktop in real-time. • Inventory Management – Track products, manage stock, and add items to invoices in one tap. • Client Management – Store and organize client data, import from contacts, and send reminders. Who Billdu is for? Billdu is perfect for contractors, estimators, and service companies including: painters, concrete, HVAC, roofers, renovators, plumbers, siding, lawn care, construction, electricians, carpenters, flooring, builders, pest control, tile, handymen, landscapers, drywallers, paving, remodeling, arborists, cleaning, general contractors, scaffolding, insulation, pool, EV charger installers and more! Advanced Features: - Attach product images to invoices - Know when an invoice was opened - Connect directly with your accountant - Use offline and sync later - Secure with Face ID or Touch ID - Generate reports and track cash flow Flexible Plans: Try Billdu free for 7 days. Upgrade to Lite, Standard, or Premium for unlimited invoices, estimates, and clients. Billdu helps you save time, get paid faster, and stay organized — all while maintaining a professional image. Terms: https://my.billdu.com/page/condition Privacy: https://my.billdu.com/page/protection

About

Invoice Ninja

This app helps businesses manage their finances by creating and sending invoices, tracking payments, and managing clients and projects. It offers features like time tracking, expense management, and payment processing to streamline business operations and get paid faster.

Highlights
  • Invoice creation and sending
  • Payment tracking and processing
  • Client management
  • Project and task management
  • Time tracking
  • Expense tracking
  • Automated notifications
Features
Read full description

200,000+ businesses trust Invoice Ninja. And it's 100% free! Create invoices, track payments, vendors, expenses, and time billable-tasks & projects: • Invoicing, Quotes, Credits, Payments • Product Library, Client Management • Project & Task Management, Time-Tracking • Full Persistence, 2FA, Google Login Pro & Enterprise plan highlights + Unlimited Clients, Invoices, Quotes + Email invoices & quotes via your Gmail account. + Attach & embed 3rd party files to client invoices & emails Intuitive business dashboard + View revenue, invoices sent, recent activity data. + Track upcoming invoices, invoices past due, more. Invoice clients in seconds + Create clients and send an invoices in seconds. + Create subscriptions, recurring invoices, payment profiles. + Product library system to quickly populate invoices & quotes. Clients pay faster + Accept credit cards, ACH payments, PayPal, & more. + Clients pay directly from their invoice with the click of a button. Notifications keep you up-to-date + Receive app and email notifications when client view or paid. + View instant data updates when payments are made. + Automate payment reminders & past due notifications. Time-tracking, Tasks, Kanban Boards + The feel of desktop software but with the power of a web-based app. + Create projects, time billable-tasks, monitor progress in kanban boards. Integration Platforms + Streamline workflow with Zapier, Integromat, & more. + Self-host integrations with Digital Ocean, Cloudron, Softaculous & more. Download the Invoice Ninja app today and start invoicing clients & get paid! Self-hosting? Invoice Ninja is 100% source-available! + GitHub: https://github.com/invoiceninja/admin-portal

Screenshots

Billdu4 screens
Invoice Ninja4 screens

Verdict

The call

The clearest difference is ratings volume: Billdu at 26K against Invoice Ninja's 177. Billdu also leads on rating (4.8 vs 4.6) and review sentiment (90% vs 78%). Invoice Ninja's advantage is iOS requirement (13.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Billdu sells 10 in-app purchases, starting at $7.99 per month and Invoice Ninja sells 10 in-app purchases, starting at $13.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Billdu holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: Billdu has 26K ratings behind it against 177, so its average is the more settled of the two. Written reviews point the same way: 90% of Billdu's written reviews are positive against 78% of Invoice Ninja's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 6 level
Billdu versus Invoice Ninja: the parameters behind the verdict, then further details
ParameterBillduInvoice Ninja
PriceFreeFree
Rating4.8 (26K ratings) — better4.6 (177 ratings)
Positive reviews89.9% of reviews — better77.6% of reviews
Number of ratings26K — better177
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#71 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod, Mac — better
Requires iOS17.013.0 — better
Further details — not scored
Size207 MB67 MB
Age rating4+4+
DeveloperBILLDU LTDInvoice Ninja LLC

Customer experience

Billdu

All ratings26,233 ratings
Positive95.9%
Neutral2.0%
Negative2.1%
Written reviews1,241 reviews
Positive89.9%
Neutral2.3%
Negative7.8%

Invoice Ninja

All ratings177 ratings
Positive89.8%
Neutral2.8%
Negative7.3%
Written reviews98 reviews
Positive77.6%
Neutral7.1%
Negative15.3%

User reviews

Billdu

From 26K App Store ratings

What we love

  • 🚀 Easy to use
  • 📊 Helpful business features
  • 🖼️ Professional-looking invoices
  • 🕰️ Time-saving
  • 💻 Seamless mobile experience

Room to improve

  • 🐛 Occasional crashes or bugs
  • 🔍 Limited customization options
  • 💳 Billing/payment issues
  • 🕰️ Slow customer support response

Invoice Ninja

From 177 App Store ratings

What we love

  • 👍 User-friendly and intuitive interface
  • 💰 Affordable pricing with free tier available
  • 🚀 Fast and responsive performance
  • 🔒 Open-source with self-hosting capability
  • 📱 Multi-platform support (web, mobile, desktop)

Room to improve

  • 🐛 Frequent crashes and freezes
  • 🔍 Poor navigation and search functionality
  • 📱 Mobile app not fully optimized for tablets/iPad
  • ⚠️ Inconsistency between web and mobile versions
  • 🔐 Data privacy concerns reported

Bugs and requests

Billdu

Reported bugs

3 issues
  • Invoices not being received by clients
  • Inconsistent invoice numbering
  • Inability to save draft estimates

Requested features

5 requests
  • Improved date/time handling
  • Ability to transfer data between businesses
  • More customization options for invoices
  • Integrated payment processing
  • Enhanced reporting and analytics

Invoice Ninja

Reported bugs

10 issues
  • App crashes when attempting Google login
  • Google authentication not working properly
  • Widgets not functioning correctly
  • App freezes during data input
  • CIS deduction not calculating correctly from net amount
Show 5 more
  • PDF download not working on iOS devices
  • Mobile app widgets malfunction
  • Back gesture not supported on iOS
  • Inconsistent syncing between web and mobile versions
  • Upgrade purchases not reflecting in app

Requested features

12 requests
  • Unit of measurement column for line items
  • Payroll system integration
  • Day rate support for freelancers (not just hourly)
  • Ticketing system
  • Better iPad/tablet optimization
Show 7 more
  • Custom PDF export filenames
  • Improved template editing and customization
  • Spell check integration for iOS
  • Test API keys for payment processors
  • Better Google login support
  • Activity notes field for time tracking
  • Australia GST/BAS support

In-app purchases

10 purchases

Billdu

Subscriptions10
  • LITE - 1 month$7.991 Month
  • STANDARD (Month)$14.991 Month
  • STANDARD - 1 month$14.991 Month
Show 7 more
  • STANDARD - 1 month7 Days trial$14.991 Month
  • PREMIUM (Month)$27.991 Month
  • PREMIUM - 1 month$27.991 Month
  • 24 invoices$59.991 Year
  • STARTER (Year)$59.991 Year
  • STANDARD (Year)$119.991 Year
  • STANDARD - 12 months$119.991 Year
10 purchases

Invoice Ninja

Subscriptions10
  • Pro - Month$13.991 Month
  • Enterprise - Month (1-2)$17.991 Month
  • Enterprise - Month (3-5)$31.991 Month
Show 7 more
  • Enterprise - Month (6-10)$59.991 Month
  • Enterprise - Month (11-20)$84.001 Month
  • Pro - Year$139.991 Year
  • Enterprise - Year (1-2)$179.991 Year
  • Enterprise - Year (3-5)$319.991 Year
  • Enterprise - Year (6-10)$539.991 Year
  • Enterprise - Year (11-20)$839.991 Year

Questions

Is Billdu free?
Billdu is free to download, with in-app purchases available.
Is Invoice Ninja free?
Invoice Ninja is free to download, with in-app purchases available.
Which has better reviews, Billdu or Invoice Ninja?
Billdu is rated higher. Billdu averages 4.8 out of 5 from 26K ratings, while Invoice Ninja averages 4.6 from 177 ratings.
Do Billdu or Invoice Ninja have ads?
Neither Billdu nor Invoice Ninja shows ads.
Which is updated more often, Billdu or Invoice Ninja?
Billdu ships an update every 2 weeks, and Invoice Ninja every 2 weeks. Most recently, Billdu was updated on October 26, 2026 and Invoice Ninja on October 24, 2026.

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