Comparison

Invoice Professional vs Simple Invoice Maker & Receipt

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

Head to head
About

Invoice Professional

Create professional invoices, quotes, and statements on the go. Manage clients, products, and inventory with ease. Supports cloud sync, PDF export, and printing.

Highlights
  • Create invoices, quotes, and statements
  • Client and product management
  • Simple inventory tracking
  • Cloud and local sync options
  • PDF export and email
  • Partial payment support
  • Multiple tax support
Features
Read full description

Invoice Professional enables small businesses to quickly create tax invoices, quotes and statements on the go. With clients/customer management in Invoice Professional, you have the the ability to store their contact details, billing and shipping addresses and a photo. Products can be stored and managed easily with SKU/UPC, descriptions, photo and price and inventory levels. KEY FEATURES - Cloud Sync (Dropbox, iCloud) - Local Sync (365 Direct Sync) - Vast customisable options for invoice and statement display and configurations. - Easily create invoices, quotes, statements, clients and products. - Search feature for invoices, quotes, statements, clients and products. - View and filter invoices, quotes, statements by date ranges. - View and filter invoices, quotes, statements by paid/unpaid/past due date. - Keep a list of your clients and products. - Partial payment supported. - Multiple tax supported. - Simple inventory management. Keep track of stock levels. - Supports AirPrint to print out invoices and statements. - Export invoices, quotes and statements out as PDF locally. - Email invoices, quotes and statements as PDF. - Use the camera to scan barcodes for adding items to invoices. - Preset and customisable template options. - Supports single company/businesses and multiple companies/businesses. An active subscription is required to use the application. *There are two (2) subscription options available for Invoice Professional: Single Company Only and; Multiple Companies. All subscription options have a choice between 1-month, 6-month and 1-year durations, with any 1-month subscription providing a 1-week trial period (one time use only). Payment will be charged to iTunes Account at confirmation of purchase. 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. No cancellation of the current subscription is allowed during active subscription period. Privacy Policy & Terms of Use - http://invoiceprofessional.com/privacy.html [SUPPORT] Email us at support@sockii.com

About

Simple Invoice Maker & Receipt

Streamline your business finances by creating and sending professional invoices, estimates, and receipts. Manage inventory, track payments, and generate reports for easier tax filing. Get paid faster with integrated payment options.

Highlights
  • Create professional invoices, estimates, and receipts
  • Manage inventory with low stock reminders
  • Accept online and in-person payments
  • Track partial payments and deposits
  • Generate reports for bookkeeping and tax filing
  • Cloud-based data storage
  • Multi-currency and multi-language support
Features
Read full description

Create, send & track invoices, estimates, receipts & inventory on your phone and keep your finances organized. Send the invoice before you leave your customer. SIR helps you create professional invoices, estimates and receipts in seconds. Introducing the most user-friendly and quick invoicing app you’ll ever use. Manage your whole invoicing game and inventory management from this single platform. SIMPLE INVOICE MAKER Make professional invoices easily in a few simple steps. Include your company logo, brand color, and information with our templates. Stay organized with our invoice tracker by sending invoices quickly via email or other messaging tool and receive notices once they read your messages. INVENTORY MANAGEMENT Discover inventory control like no other. SIR is the only app that allows users to add multiple companies and warehouses, and assign multiple users. Our inventory management makes tracking, recording, and stock updating easy and you’ll even get low stock reminders. GET PAID FASTER Accept online or in-person payments via credit card, debit card, Stripe or PayPal and get paid faster. Comparable to Square Point of Sale (POS), PayPal Business, and other payment systems. Easy Google Pay & Apple Pay options are available. PROFESSIONAL ESTIMATES MAKER Create professional estimates that guarantee you get the job. Our invoice maker app converts estimates to invoices with just one click. CREATE SMART RECEIPTS With our receipt maker, instantly create purchase orders and smart receipts once you receive payment. Easily keep track of all unpaid invoices so you never miss a payment. ADVANCED PAYMENTS MANAGEMENT Keep track of partial payments and deposits, and issue payment vouchers and debit/credit notes for customers. View the database of customers and suppliers in one place and keep things organized. TRACK & PAY TAXES Don’t stress about organizing or submitting your taxes for your small business! SIR gives you an easy way to trace and export reports for easier tax filing and payment. BOOKKEEPING REPORTS Stock management isn’t all we can do. You can export reports to PDF for bookkeeping and legal requirements with SIR. ADDITIONAL FEATURES - All data is cloud-based. - Add multiple currencies & view in multiple languages. - Attach photos, include payment information, payment terms, due dates, discounts, taxes, shipping details, notes, and more. - Share documents via email, WhatsApp, print or PDF. - Import customers & suppliers from your phone contacts. - Send auto-generated, professionally designed invoice reminders and thank you notes to customers - Multi-user control for your small business - Perfect to use alongside Invoice Simple, Bookipi - Billing Estimate, Invoice2go, Tiny Invoice, Easy Invoice Maker, Billdu, Zoho Inventory, QSR Inventory, Freshbooks, Xactimate, and more. Download SIR invoice maker app now. PRICING With the free tier, you get one business, one user, one invoice, one estimate, one receipt and one purchase order for free so you can try SIR before you upgrade. Then upgrade in-app for unlimited access. Subscribe to the Annual Package for $35.99 (or local equivalent) and save 70%, with a 3-day free trial. Pay $3.99 (or local equivalent) for monthly plan. Assign unlimited additional users with limited or unlimited access and add multiple businesses for free if subscribed. Automatic renewal of subscription by credit card through your iTunes account. You can turn off auto-renewal at any time. Your subscription automatically renews unless auto-renewal is turned off at least 24 hours before the expiry of the active subscription. An active subscription cannot be canceled before the subscription expires. Any unused portion of a free trial period will be forfeited when the user purchases a paid subscription. Terms of use: https://sir-app.com/terms-and-conditions/

Screenshots

Invoice Professional4 screens
Simple Invoice Maker & Receipt4 screens

Verdict

The call

The clearest difference is review sentiment: Simple Invoice Maker & Receipt at 74% against Invoice Professional's 0%. Simple Invoice Maker & Receipt also leads on monetization model (free with in-app purchases vs subscription) and update cadence (monthly vs every 3 months). On price, ads, in-app purchases 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. Invoice Professional sells 6 in-app purchases, starting at $2.99 per month and Simple Invoice Maker & Receipt sells 5 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Invoice Professional ships an update every 3 months, Simple Invoice Maker & Receipt monthly. The most recent releases landed on October 15, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Invoice Professional versus Simple Invoice Maker & Receipt: the parameters behind the verdict, then further details
ParameterInvoice ProfessionalSimple Invoice Maker & Receipt
PriceFreeFree
Rating—4.1 (35 ratings) — better
Positive reviews0.0% of reviews73.9% of reviews — better
Number of ratings—35 — better
Update frequencyEvery 3 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.611.0 — better
Further details — not scored
Size27 MB30 MB
Age rating4+4+
DeveloperSockii Pty LtdSK Tech Systems LLC

Customer experience

Invoice Professional

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Simple Invoice Maker & Receipt

All ratings35 ratings
Positive77.1%
Neutral5.7%
Negative17.1%
Written reviews23 reviews
Positive73.9%
Neutral4.3%
Negative21.7%

In-app purchases

6 purchases

Invoice Professional

Subscriptions6
  • Single Company7 Days trial$2.991 Month
  • Multiple Company7 Days trial$7.491 Month
  • Single Company$18.496 Months
Show 3 more
  • Single Company$35.991 Year
  • Multiple Company$41.996 Months
  • Multiple Company$82.991 Year
5 purchases

Simple Invoice Maker & Receipt

Subscriptions2
  • Monthly Subscription$3.991 Month
  • Sir Invoices Annually3 Days trial$17.991 Year
One-time3
  • Buy additional companiesFree
  • Buy additional users$99.99
  • Lifetime$99.99

Questions

Is Invoice Professional free?
Invoice Professional is free to download, with in-app purchases available.
Is Simple Invoice Maker & Receipt free?
Simple Invoice Maker & Receipt is free to download, with in-app purchases available.
Do Invoice Professional or Simple Invoice Maker & Receipt have ads?
Neither Invoice Professional nor Simple Invoice Maker & Receipt shows ads.
Which is updated more often, Invoice Professional or Simple Invoice Maker & Receipt?
Invoice Professional ships an update every 3 months, and Simple Invoice Maker & Receipt monthly. Most recently, Invoice Professional was updated on October 15, 2026 and Simple Invoice Maker & Receipt on October 24, 2026.

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