Comparison

Invoice Maker ▸ Invoice Simple vs Invoice Maker by SPK

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

Head to head
About

Invoice Maker ▸ Invoice Simple

Create and send professional invoices, estimates, and receipts quickly from your mobile device. This app helps individuals and growing businesses get organized, look professional, and get paid faster by accepting online payments.

Highlights
  • Create invoices, estimates, and receipts
  • Send documents via email, text, or WhatsApp
  • Accept online payments
  • Customize invoices with logo and business details
  • Track invoice status and get payment reminders
  • Organize client and product information
Read full description

Easily create & send professional invoices, estimates, and receipts on the go! The perfect tool for individuals and growing businesses that lets you quickly create a document on the spot while with your customer. For growing businesses who want: · A simple way to make estimates, invoices, and receipts fast · Professional-looking invoices that you can send from your mobile device · An easy way to accept online payments and stop chasing checks From a landscaping invoice or estimate to a receipt for entertainment supplies in your side gig, Invoice Simple is the app for your small business. START YOUR FREE TRIAL 6 WAYS INVOICE SIMPLE MAKES YOUR LIFE AS A BUSINESS OWNER EASIER 1. SIMPLE TO USE Designed to make sure you never have to waste time “figuring out” how to make it work. 2. INVOICE ANYWHERE Standing next to your client, in your truck, or sitting at your desk, there’s no quicker way to send an invoice. 3. GET ORGANIZED Keeping track is effortless. Your entire history is collected in one place, easy to find and read. Taxes are a breeze. 4. LOOK MORE PROFESSIONAL Create professional-looking invoices and estimates on the spot. 5. GET PAID FASTER Making it easy to get paid by accepting cards with simple fee structure and low rates that you can add to an invoice - no cost to you, as well as accept checks and cash. 6. INVOICE WITH CONFIDENCE Join hundreds of thousands of small businesses who rely on Invoice Simple, consistently a top-rated invoicing app. Easily customize every aspect of your invoice, estimate, or receipt: 1. Add your logo and business details 2. Include your banking details 3. Easy-add and import client details saved in your phone contacts 4. Customize tax and add discounts 5. Accept credit card payment with simple fee structure and low rates that you can add to an invoice - no cost to you, as well as accept checks and cash 6. Add product information and attach photos 7. Include your signature Send your invoice or estimate by email, text, WhatsApp, or download it as a PDF. Get instant alerts when it's opened, paid, or is overdue with instant mobile device and email notifications. You don’t have to limit yourself to cash and checks. Just select “accept online payments” and follow the simple steps to hook up your invoices to Invoice Simple Payments. PLANS: Start with a free trial, then choose the best plan for your business: Essentials For entrepreneurs to easily start sending estimates, invoices, receipts, and receive payments. · Up to 3 invoices per month · QR code payments · Online payments · Real time read receipts · Expense tracking · Top rated mobile and web apps Plus For small businesses to send nice-looking, easy to create documents on-the-go. Everything in Essentials, plus: · Up to 10 invoices per month · Add photos · Business owner signature · Autofill client & item info · Due date reminders Premium For small businesses to improve invoice organization and make online payments easy. Everything in Plus, along with: · UNLIMITED invoices per month · Customer support 1st response priority Invoice Simple, the ultimate invoice, receipt, & estimate maker: Send simple invoices using professional templates, invoice generator, PDF invoices and quotes, online payments, bill organizer, receipt and expense tracking, and business reporting—all rolled up into one easy-to-use app. When it's time to create an estimate, invoice, or receipt for your small business, Invoice Simple will work for you. Terms of use: https://www.invoicesimple.com/terms Privacy policy: https://www.invoicesimple.com/privacy

About

Invoice Maker by SPK

Create and send professional PDF invoices and estimates quickly and easily. This ad-free, watermark-free app is ideal for small business owners, consultants, and freelancers on the go. Customize templates, track clients, and manage your billing efficiently.

Highlights
  • Create unlimited invoices and estimates
  • No ads or watermarks
  • Customizable invoice fields
  • Client list management
  • Multiple sharing options (email, WhatsApp, text)
  • Convert estimates to invoices
  • Company logo and signature upload
Features
Read full description

Invoice Maker+ is the #1 invoice app available today! It is an award-winning business utility app with NO ADS and NO WATERMARKS. It is the ideal on-the-go mobile solution for small business owners, consultants, contractors, and freelancers in all industries! Our easy-to-use generator allows you to create and send professional PDF invoices and estimates to your customers within seconds. Create invoices and estimates wherever you are! You can send an invoice while in the office, home, car, and even while you are still with your customer! Share via email, WhatsApp, text, print, and more! Our professionally designed template is sophisticated, clean, modern, and attractive, and the customization features allow you to add as much level of detail as you’d like! --- Features: * Create and Share UNLIMITED invoices and estimates with NO ADS and NO WATERMARKS * Select your region preference to customize your currency and date format * Preview via PDF while the invoice or estimate is being created * Customize invoice fields including billing date, due date, item name, item description, quantity, rate, item discount, shipping, tax, overall discount, etc. * Create, track, and store your client list * Deliver via customized email, whatsapp, text, messenger, print, and more * Track and organize your invoices and estimates using our filters and labels (“Outstanding”, “Paid”, “Open”, and “Closed”) * Upload a company logo to personalize your invoices and estimates * Include personal signature * Add payment details (bank transfer, check payable, paypal email) * Convert estimates to invoice with the press of a button * Duplicate an existing invoice or estimate with the press of a button (major time-saver for recurring customers!) * Mark an invoice or estimate as “Draft” if still a work in progress * Store and organize your invoices in one place so filing taxes is quick and easy * Automatically add names to your client list from your phone contacts * Add any additional notes you wish, such as payment terms, company policy, a “Thank You” note, etc. --- Privacy Policy: https://www.iubenda.com/privacy-policy/17124454 Terms and Conditions: https://www.iubenda.com/terms-and-conditions/17124454

Screenshots

Invoice Maker ▸ Invoice Simple4 screens
Invoice Maker by SPK4 screens

Verdict

The call

The clearest difference is ratings volume: Invoice Maker ▸ Invoice Simple at 123K against Invoice Maker by SPK's 906. Invoice Maker ▸ Invoice Simple also leads on chart position (#9 vs unranked). Invoice Maker by SPK's advantage is review sentiment (73% vs 64%) and iOS requirement (13.0 vs 15.1). On price, rating, update cadence and ads 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 Maker ▸ Invoice Simple sells 9 in-app purchases, starting at $6.99 per month and Invoice Maker by SPK sells 9 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Invoice Maker ▸ Invoice Simple against 4.8 for Invoice Maker by SPK. That said, the two scores are not equally well evidenced: Invoice Maker ▸ Invoice Simple has 123K ratings behind it against 906, so its average is the more settled of the two. Written reviews are what separate them: 64% of Invoice Maker ▸ Invoice Simple's written reviews are positive against 73% of Invoice Maker by SPK's.

UpkeepUpdate frequency

Invoice Maker ▸ Invoice Simple ships an update every 9 days, Invoice Maker by SPK weekly. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 7 level
Invoice Maker ▸ Invoice Simple versus Invoice Maker by SPK: the parameters behind the verdict, then further details
ParameterInvoice Maker ▸ Invoice SimpleInvoice Maker by SPK
PriceFreeFree
Rating4.9 (123K ratings) — better4.8 (906 ratings)
Positive reviews63.9% of reviews73.3% of reviews — better
Number of ratings123K — better906
Update frequencyEvery 9 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank#9 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.113.0 — better
Further details — not scored
Size209 MB30 MB
Age rating4+4+
DeveloperZenvoice Inc.SPK Studios LLC

Customer experience

Invoice Maker ▸ Invoice Simple

All ratings122,755 ratings
Positive97.5%
Neutral1.6%
Negative0.9%
Written reviews1,579 reviews
Positive63.9%
Neutral6.1%
Negative30.0%

Invoice Maker by SPK

All ratings906 ratings
Positive95.6%
Neutral1.4%
Negative3.0%
Written reviews30 reviews
Positive73.3%
Neutral10.0%
Negative16.7%

User reviews

Invoice Maker ▸ Invoice Simple

From 123K App Store ratings

What we love

  • 🚀 Easy to use
  • 👍 Professional-looking invoices
  • 🚀 Quick and simple
  • 👍 Saves time
  • 👍 Convenient mobile access

Room to improve

  • 💰 Expensive subscription
  • 🐛 Glitches and bugs
  • 🔀 Inconsistent features across platforms
  • 🔀 Confusing navigation
  • 🔀 Limited customization options

Invoice Maker by SPK

From 906 App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Quick and efficient
  • 💡 Helpful features
  • ⭐ Great app overall

Room to improve

  • 🐛 Data loss issues
  • 🔒 Lack of device sync
  • 📝 Limited item descriptions
  • 🔧 Unreliable functionality

Bugs and requests

Invoice Maker ▸ Invoice Simple

Reported bugs

4 issues
  • Invoices not sending properly
  • App crashing or freezing
  • Inability to recover deleted invoices
  • Syncing issues between mobile and desktop

Requested features

6 requests
  • Add ability to rearrange line items
  • Improve search and filtering capabilities
  • Integrate with accounting software
  • Add option to track expenses and profitability
  • Allow multiple business profiles in one account
Show 1 more
  • Improve mobile and desktop app parity

Invoice Maker by SPK

Reported bugs

2 issues
  • Invoices not updating correctly
  • Inability to unsubscribe from paid features

Requested features

3 requests
  • Ability to sync data across devices
  • Increased character limit for item descriptions
  • Improved customer support

In-app purchases

9 purchases

Invoice Maker ▸ Invoice Simple

Subscriptions9
  • Essentials Monthly$6.991 Month
  • Mobile subscription$10.991 Month
  • Monthly Side Business$10.991 Month
Show 6 more
  • Monthly Business Sub$11.991 Month
  • Monthly Subscription$11.991 Month
  • Monthly subscription2 variants$13.491 Month
  • Plus Monthly$14.991 Month
  • Monthly Standard Subscription$17.991 Month
  • Premium Monthly$21.991 Month
9 purchases

Invoice Maker by SPK

Subscriptions9
  • My Invoice Generator3 Days trial$4.991 Month
  • The Invoice Maker3 Days trial$7.991 Month
  • Invoice Maker App3 Days trial$9.991 Month
Show 6 more
  • Invoice Maker Pro3 Days trial$9.991 Month
  • Smart Invoice Maker3 Days trial$39.991 Year
  • Quick Invoice Maker3 Days trial$59.991 Year
  • Invoice Maker Professional3 Days trial$69.991 Year
  • App Invoice Maker3 Days trial$89.991 Year
  • Invoice Maker Plus3 Days trial$89.991 Year

Questions

Is Invoice Maker ▸ Invoice Simple free?
Invoice Maker ▸ Invoice Simple is free to download, with in-app purchases available.
Is Invoice Maker by SPK free?
Invoice Maker by SPK is free to download, with in-app purchases available.
Which has better reviews, Invoice Maker ▸ Invoice Simple or Invoice Maker by SPK?
Invoice Maker ▸ Invoice Simple is rated higher. Invoice Maker ▸ Invoice Simple averages 4.9 out of 5 from 123K ratings, while Invoice Maker by SPK averages 4.8 from 906 ratings.
Do Invoice Maker ▸ Invoice Simple or Invoice Maker by SPK have ads?
Neither Invoice Maker ▸ Invoice Simple nor Invoice Maker by SPK shows ads.
Which is updated more often, Invoice Maker ▸ Invoice Simple or Invoice Maker by SPK?
Invoice Maker ▸ Invoice Simple ships an update every 9 days, and Invoice Maker by SPK weekly. Most recently, Invoice Maker ▸ Invoice Simple was updated on September 24, 2026 and Invoice Maker by SPK on September 22, 2026.

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