Comparison

Invoice Maker by InvoiceOwl 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 by InvoiceOwl

Create professional estimates, invoices, and purchase orders in minutes. Manage clients, items, and track payments with detailed reports. Collaborate with your team in real-time.

Highlights
  • Estimate creation
  • Invoice generation
  • Purchase order management
  • Client management
  • Item management
  • Financial reporting
  • Real-time notifications
Features
Read full description

Now, no more need to spend hours creating paper estimates and invoices manually. InvoiceOwl is here to help. Create professional looking estimates and invoices in a matter of minutes! InvoiceOwl is easy-to-use, on-the-go estimation and invoicing software designed with simplicity in mind. Ideal for all sorts of contractors, InvoiceOwl allows you to create professional estimates and invoices in a matter of moments. InvoiceOwl App Features =============== Estimate Maker: After you’ve evaluated your client’s needs, you can supply them with professional-looking estimations and quotes for your services right from the app! All you need from your clients is a valid email address. Invoices: Want to send an invoice to your customers? Create an invoice, filling required information like billing name, provided services, attach photos, payment instructions, additional comments if any. Manage both paid and unpaid invoices. Purchase Orders: Now, you save an hour of time on creating purchase orders whenever ordering supplies and products for the company. Client Memos: Do you send credit memos to your customers? Generate memos in just a few minutes and send it to your customers directly in their inbox. Clients: You must have lots of customers whom you might be managing in an excel sheet? Now, no need. InvoiceOwl is an all-in-software solution for invoicing, where you can add all the clients with details. Items: You must be providing more than one service and product. Right? Then, manage all the products and services under the item section. Reports: Create monthly, quarterly, and yearly reports to track the paid and unpaid payments, annual sales by client, sales by item, profit & loss, taxes, sales journal, and more. Real-time Notification: Stay updated and informed about all the updates whether it is about receiving new payment, PO, credit memo, you will stay aware of the updates in real-time.

 NEW Team Model: Our advanced collaboration features allow you to add employees and freelancers to your account. * Add team members and set access levels * Control what projects, clients and documents team members can view and edit * You maintain full administrative access and oversight 
 Can I Customize the Estimates, Invoices, Credit Momos, and Purchases Orders For My Business? ============================================================= Yes, of course. InvoiceOwl allows you to change and customize the look, feel, and detail of the invoices, and other documents like purchase order and credit memo. - 8+ Templates to choose from for your invoices - Change logo in the invoice and include your logo to highlight - Change banner in just a few seconds. - Include a watermark on the invoices as per your business requirements. - Easily match your brand, color & logo to make your invoice look professional. Benefits of Using InvoiceOwl Application ========================== - Create professional estimates to impress your potential clients - Create contracts with easy acceptance via digital signature - Create and send estimates with clients on-the-spot from the mobile app - Collect testimonials from successfully completed jobs to attract more clients - Itemize labor and materials so clients know exactly where their money is going - Upload photos and documents to accompany your proposals Subscription Pricing and Terms: ========================== - InvoiceOwl is free to download. We offer auto-renewing subscription plans. - Paid features: Unlimited Invoices, Unlimited Estimates, Add Unlimited Clients. - Payment will be charged to iTunes Account at confirmation of purchase. - The subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - You can manage or turn off auto-renew in your Apple ID Account Settings any time after purchase. Privacy Policy: https://invoiceowl.com/privacy-policy/ Terms and Conditions: https://invoiceowl.com/terms-of-use/

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 by InvoiceOwl4 screens
Invoice Maker by SPK4 screens

Verdict

The call

The clearest difference is rating: Invoice Maker by SPK at 4.8 against Invoice Maker by InvoiceOwl's 4.4. Invoice Maker by SPK also leads on review sentiment (73% vs 55%) and update cadence (weekly vs fortnightly). 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. Invoice Maker by InvoiceOwl sells 10 in-app purchases, starting at $5.99 per 7 days 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

Invoice Maker by SPK holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 235 and 913 respectively. Written reviews point the same way: 55% of Invoice Maker by InvoiceOwl's written reviews are positive against 73% of Invoice Maker by SPK's.

UpkeepUpdate frequency

Invoice Maker by InvoiceOwl ships an update fortnightly, Invoice Maker by SPK weekly. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard5 real differences · 5 level
Invoice Maker by InvoiceOwl versus Invoice Maker by SPK: the parameters behind the verdict, then further details
ParameterInvoice Maker by InvoiceOwlInvoice Maker by SPK
PriceFreeFree
Rating4.4 (235 ratings)4.8 (913 ratings) — better
Positive reviews55.2% of reviews73.3% of reviews — better
Number of ratings235913 — better
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.113.0 — better
Further details — not scored
Size41 MB30 MB
Age rating4+4+
DeveloperLefage, LLCSPK Studios LLC

Customer experience

Invoice Maker by InvoiceOwl

All ratings235 ratings
Positive83.4%
Neutral6.8%
Negative9.8%
Written reviews29 reviews
Positive55.2%
Neutral10.3%
Negative34.5%

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 by InvoiceOwl

From 235 App Store ratings

What we love

  • 👍 Easy to use
  • 👍 Simple design
  • 👍 Great for contractors
  • 👍 Solid invoicing tool
  • 👍 Convenient for on-the-spot sales

Room to improve

  • 👎 Difficult to cancel subscription
  • 👎 Ghost customer support
  • 👎 Too expensive
  • 👎 Not user-friendly
  • 👎 Latest version has issues

Invoice Maker by SPK

From 913 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 by InvoiceOwl

Reported bugs

11 issues
  • Cannot cancel subscription
  • Customer support unresponsive
  • App deleted first account
  • Cannot send receipts to customers
  • Format issues in latest update
Show 6 more
  • Customers get error viewing invoices
  • Missing info in old invoices
  • Email returned to sender
  • Errors constantly
  • Photo upload problem
  • Doesn't always work on some phones and computers

Requested features

4 requests
  • Revert to previous version
  • Option to receive deposit payment first
  • Separate option for deposit payments
  • Improve document margins

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

10 purchases

Invoice Maker by InvoiceOwl

Subscriptions10
  • InvoiceOwl Weekly Unlimited$5.997 Days
  • Base - Monthly Plan3 Days trial$6.991 Month
  • InvoiceOwl Monthly Unlimited3 Days trial$9.991 Month
Show 7 more
  • Growth - Monthly Plan$11.991 Month
  • Estimates Maker - Growth Month$11.991 Month
  • Champion - Monthly Plan$28.991 Month
  • Premium - Monthly Plan3 Days trial$39.991 Month
  • Base - Annual Plan3 Days trial$49.991 Year
  • InvoiceOwl Annual Unlimited$99.991 Year
  • Invoice Maker - Growth Yearly$119.991 Year
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 by InvoiceOwl free?
Invoice Maker by InvoiceOwl 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 by InvoiceOwl or Invoice Maker by SPK?
Invoice Maker by SPK is rated higher. Invoice Maker by InvoiceOwl averages 4.4 out of 5 from 235 ratings, while Invoice Maker by SPK averages 4.8 from 913 ratings.
Do Invoice Maker by InvoiceOwl or Invoice Maker by SPK have ads?
Neither Invoice Maker by InvoiceOwl nor Invoice Maker by SPK shows ads.
Which is updated more often, Invoice Maker by InvoiceOwl or Invoice Maker by SPK?
Invoice Maker by InvoiceOwl ships an update fortnightly, and Invoice Maker by SPK weekly. Most recently, Invoice Maker by InvoiceOwl was updated on November 3, 2026 and Invoice Maker by SPK on November 7, 2026.

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