Comparison

Billdu vs Invoice Simple App

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 App

Easily create and customize professional invoices, estimates, and receipts. Automatically generate documents from estimates with a single tap. Supports custom templates, company logos, and payment terms for efficient billing.

Highlights
  • Customizable invoice templates
  • Generate PDF invoices and estimates
  • Add company logo
  • Include payment terms
  • Create receipts
  • Discount and tax options
  • Client setup from contacts
Features
Read full description

Invoice Maker App is an easily customized Invoice app, automatically generate invoices from estimates with one tap. FEATURES: • Invoice and bill for product & service. • Customize your invoice template. • Customize invoice fields. • Customize your company logo. • Create a PDF invoice or estimate. • Sign your invoice. • Include invoice payment terms. • Generate receipts. • Discount on item or total, tax on item. • Quickly set up clients from your phone contact list. You can choose a weekly subscription or yearly subscription (3 days trial). – Payment will be charged to iTunes Account at confirmation of purchase (After free trial period if offered). – Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. – Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. – Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. – Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Privacy Policy: https://sites.google.com/view/invoice-maker-app-policy/ Terms of Use: https://sites.google.com/view/invoice-maker-app-terms/

Screenshots

Billdu4 screens
Invoice Simple App4 screens

Verdict

The call

The clearest difference is ads: Billdu at none against Invoice Simple App's shown. Billdu also leads on ratings volume (26K vs 1) and chart position (#78 vs unranked). Invoice Simple App's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 89%). On price, in-app purchases, monetization model and device support 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 App sells 3 in-app purchases, starting at $5.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Invoice Simple App holds the better App Store score, 5.0 against 4.8. 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 point the same way: 89% of Billdu's written reviews are positive against 100% of Invoice Simple App's.

UpkeepUpdate frequency

Billdu ships an update every 2 weeks, Invoice Simple App every 4 weeks. The most recent releases landed on September 24, 2026 and September 10, 2026 respectively.

Scorecard7 real differences · 4 level
Billdu versus Invoice Simple App: the parameters behind the verdict, then further details
ParameterBillduInvoice Simple App
PriceFreeFree
Rating4.8 (26K ratings)5.0 (1 ratings) — better
Positive reviews89.3% of reviews100.0% of reviews — better
Number of ratings26K — better1
Update frequencyEvery 2 weeks — betterEvery 4 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#78 — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.015.6 — better
Further details — not scored
Size205 MB85 MB
Age rating4+4+
DeveloperBILLDU LTDCaprinix LLC

Customer experience

Billdu

All ratings26,064 ratings
Positive95.9%
Neutral2.0%
Negative2.1%
Written reviews1,140 reviews
Positive89.3%
Neutral2.5%
Negative8.2%

Invoice Simple App

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 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 App

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
3 purchases

Invoice Simple App

Subscriptions2
  • Unlock all features per week$5.997 Days
  • Manage All Invoices Per Year3 Days trial$49.991 Year
One-time1
  • Auto-manage & dispatch invoice$69.99

Questions

Is Billdu free?
Billdu is free to download, with in-app purchases available.
Is Invoice Simple App free?
Invoice Simple App is free to download, with in-app purchases available.
Which has better reviews, Billdu or Invoice Simple App?
Invoice Simple App is rated higher. Billdu averages 4.8 out of 5 from 26K ratings, while Invoice Simple App averages 5.0 from 1 ratings.
Do Billdu or Invoice Simple App have ads?
Invoice Simple App shows ads; Billdu does not.
Which is updated more often, Billdu or Invoice Simple App?
Billdu ships an update every 2 weeks, and Invoice Simple App every 4 weeks. Most recently, Billdu was updated on September 24, 2026 and Invoice Simple App on September 10, 2026.

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