Comparison

Billdu vs Invoice Simple

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 Simple

Create professional invoices, estimates, and receipts quickly. Manage clients, track payments, and generate reports to understand business performance. Supports multiple businesses and offers customization options.

Highlights
  • Create professional invoices and estimates
  • Manage client contact details
  • Track payments and overdue invoices
  • Generate revenue and sales reports
  • Support for multiple businesses
  • Customizable invoice templates
  • Automated payment reminders
Features
Read full description

Invoice Maker & Estimate App – Simple Billing for Small Businesses Create professional invoices, estimates, and receipts in seconds with the easiest Invoice Maker for iPhone. Perfect for freelancers, contractors, small businesses, and service professionals. Send invoices, track payments, manage customers, and grow your business — all in one powerful billing app. Create Professional Invoices Generate beautiful invoices quickly with customizable templates. • Create invoices in seconds • Add company logo & business details • Add products or services with price & quantity • Automatic invoice numbering • Add taxes (GST, VAT, sales tax) • Add discounts & payment terms • Notes and terms section • Professional PDF invoice generation Perfect for contractors, freelancers, agencies, and small business owners. Estimate & Quote Maker Create estimates and convert them to invoices with one tap. • Create professional quotations • Convert estimate → invoice instantly • Track estimate approval status • Add digital signatures • Send quotes directly to clients Close deals faster with professional quotes. Client & Customer Management Organize all your customer information in one place. • Store client contact details • Save phone, email, and address • Manage multiple clients easily • Quick client selection while invoicing • Customer statement history Product & Service Catalog Save frequently used products and services. • Create reusable items • Add price, tax, and description • Add product images • Quickly add items to invoices Payment Tracking Stay on top of your business cash flow. • Mark invoices as paid or unpaid • Track overdue invoices • Record partial payments • Payment status updates Send & Share Invoices Send invoices to customers instantly. • Email invoices directly • Share via WhatsApp, SMS, or link • Download PDF invoices • Print invoices anytime • Track invoice read receipts Reports & Business Insights Understand your business performance. • Revenue reports • Monthly and yearly sales reports • Paid vs unpaid invoice reports • Tax summary reports Expense Tracking Track expenses and understand your profit. • Record business expenses • Categorize expenses • Attach receipts and documents • Monitor profit and spending Multi-Business Support Manage multiple companies in one app. • Create multiple businesses • Separate invoice databases • Different logos and company details Customization Options Make invoices match your brand. • Custom invoice templates • Brand colors • Custom invoice fields • Multiple currencies • Multi-language support Automation Features Save time with smart automation. • Recurring invoices • Automatic payment reminders • Late fee automation • Auto invoice numbering Notifications Stay updated on every transaction. • Invoice opened notifications • Payment received alerts • Overdue invoice reminders Perfect For • Freelancers • Contractors • Small Businesses • Consultants • Agencies • Service Professionals • Self-Employed Workers Why Choose This Invoice Maker? • Simple & easy to use • Professional invoice templates • Powerful business reports • Payment tracking • Works anywhere Start creating invoices today and get paid faster. https://invoicemaker2026.blogspot.com/2026/03/invoice-maker-privacy-policy.html https://invoicemaker2026.blogspot.com/2026/03/invoice-maker-terms-conditions.html

Screenshots

Billdu4 screens
Invoice Simple4 screens

Verdict

The call

The clearest difference is rating: Billdu at 4.8 against Invoice Simple's 1.0. Billdu also leads on ratings volume (26K vs 1) and chart position (#71 vs unranked). Invoice Simple's advantage is update cadence (every 5 days vs every 2 weeks) and review sentiment (100% vs 90%). On price, ads, in-app purchases and monetization model 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 Simple sells 2 in-app purchases, starting at $6.99 per 7 days. 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 1.0. That said, the two scores are not equally well evidenced: Billdu has 26K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 90% of Billdu's written reviews are positive against 100% of Invoice Simple's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Billdu ships an update every 2 weeks, Invoice Simple every 5 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 5 level
Billdu versus Invoice Simple: the parameters behind the verdict, then further details
ParameterBillduInvoice Simple
PriceFreeFree
Rating4.8 (26K ratings) — better1.0 (1 ratings)
Positive reviews89.9% of reviews100.0% of reviews — better
Number of ratings26K — better1
Update frequencyEvery 2 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#71 — better—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.014.0 — better
Further details — not scored
Size207 MB120 MB
Age rating4+4+
DeveloperBILLDU LTDAlpeshbhai Dungrani

Customer experience

Billdu

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

Invoice Simple

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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 Simple

Not enough reviews yet to summarise bugs or requests.

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
2 purchases

Invoice Simple

Subscriptions2
  • Weekly Subscription$6.997 Days
  • Weekly Subscription3 Days trial$6.997 Days

Questions

Is Billdu free?
Billdu is free to download, with in-app purchases available.
Is Invoice Simple free?
Invoice Simple is free to download, with in-app purchases available.
Which has better reviews, Billdu or Invoice Simple?
Billdu is rated higher. Billdu averages 4.8 out of 5 from 26K ratings, while Invoice Simple averages 1.0 from 1 ratings.
Do Billdu or Invoice Simple have ads?
Neither Billdu nor Invoice Simple shows ads.
Which is updated more often, Billdu or Invoice Simple?
Billdu ships an update every 2 weeks, and Invoice Simple every 5 days. Most recently, Billdu was updated on October 30, 2026 and Invoice Simple on October 24, 2026.

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