Comparison

Invoice Maker ▸ Invoice Simple vs Service Tech Work Orders Plus

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
Currently charting
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

Service Tech Work Orders Plus

Manage field service operations with this comprehensive app. Schedule appointments, create professional invoices and estimates, track client information, and analyze financial data. All your business management tools in one place, offline.

Highlights
  • Client-focused scheduling
  • Professional invoicing and estimates
  • Contact management with direct communication
  • Inventory and labor tracking
  • Profit & Loss analysis
  • Offline data storage
  • Customizable document formats
Read full description

Service Tech is a complete management app for all types of professional in Field service providers. It maintains a client focused schedule of your appointments. Integrated with your client contact info you can quickly create invoices and track your important accounts. Reasonable One-Time Price There are no monthly or annual fees to use your app. Powerful invoicing function is included to create, email and print all types of sales and service invoices. Invoice entry you can visualize the completed invoice as you go. The invoice entry view all of your transactions can be tailored to the unique needs of your business. There is extensive profit & loss analysis. This comprehensive business app provides complete financial information including inventory control and Profit & Loss Info. All information is maintained on your device and there is no need for connectivity or outside servers as is common with many of the more sophisticated business apps. Highlights: Project Pro Create cost plus type estimates and invoices with multiple levels and phases. Use Craftsman and your items with included descriptions and costs. Scheduler - The calendar on steroids. Select client names from your contacts and add the service information to the appointment. Create reminders, complete and invoice the transaction, view contact management info and send confirmations. All right from the appointment. View multiple calendars, set alerts, search history. Contact Management - Store notes, images and track other communications with your clients and have the in app ability to call, text, email or map without leaving your app. Labor, Parts & Supplies are maintained in the app with detailed multi-line descriptions, costs, price and units of measure & on hand quantities. These can be added on-the-fly or maintained from your stored items. Invoices are automatically created from your Estimates and support multiple payment methods. Maintain PAID and OPEN status of your invoices. Multiple sales tax rates. Your logo, detailed terms and conditions and other messages are automatically displayed. Estimates - In App Purchase required. Create detailed and professional looking estimates at the client site that may be immediately emailed or printed. Track the status of each Estimate from Draft to Email to Approved. Document Manager Document Design & Delivery- Change document formats, images, fonts, colors, and field names. Use your local language and terms. Batch deliver Printed & Email docs. Signature Capture of approved Estimates with an update of Status. Invoices and Estimates may be copied for editing and reuse with other clients. Financial Information - Is instantly available for any client, job or timeframe with just a few taps. Information may be viewed on screen or downloaded for further analysis with any spreadsheet. Help and Support - Context sensitive help shows by topic as well as how to movies. Email, text and phone support provides to help with any questions or issues. In-App Purchases Cloud Sync Automatically synchronize your information utilizing iCloud technology. For up to five devices this In App will keep your business info inSync and available on all your devices! Messages & Reminders Create Appointment Reminders automatically from your schedule using text or email. Profits and Reports Profits provides a complete financial system that tracks all sales, purchases and expenses. Includes ALL formatted PDF Reports that can be printed. + Spreadsheet Download Download your financial info and backup your info. Craftsman Cost Books This is the #1 info source for Construction Labor & Materials Cost Information. With over 15,000 labor and material items the info contained in these saves time required for creating project estimates and eliminates costly pricing errors. Recurring Service Repetitive Services entry and automatic weekly, semiweekly or monthly release for maintenance and other service providers.

Screenshots

Invoice Maker ▸ Invoice Simple4 screens
Service Tech Work Orders Plus4 screens

Verdict

The call

The clearest difference is price: Invoice Maker ▸ Invoice Simple at Free against Service Tech Work Orders Plus's $7.99. Invoice Maker ▸ Invoice Simple also leads on rating (4.9 vs 4.2) and update cadence (every 9 days vs every 3 months). Service Tech Work Orders Plus's advantage is review sentiment (82% vs 64%) and iOS requirement (13.0 vs 15.1). On 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

Invoice Maker ▸ Invoice Simple is free to download; Service Tech Work Orders Plus costs $7.99 up front. Invoice Maker ▸ Invoice Simple sells 9 in-app purchases, starting at $6.99 per month and Service Tech Work Orders Plus sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Invoice Maker ▸ Invoice Simple holds the better App Store score, 4.9 against 4.2. That said, the two scores are not equally well evidenced: Invoice Maker ▸ Invoice Simple has 123K ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 64% of Invoice Maker ▸ Invoice Simple's written reviews are positive against 82% of Service Tech Work Orders Plus's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Invoice Maker ▸ Invoice Simple ships an update every 9 days, Service Tech Work Orders Plus every 3 months. The most recent releases landed on September 25, 2026 and September 17, 2026 respectively.

Scorecard8 real differences · 3 level
Invoice Maker ▸ Invoice Simple versus Service Tech Work Orders Plus: the parameters behind the verdict, then further details
ParameterInvoice Maker ▸ Invoice SimpleService Tech Work Orders Plus
PriceFree — better$7.99
Rating4.9 (123K ratings) — better4.2 (13 ratings)
Positive reviews63.9% of reviews81.8% of reviews — better
Number of ratings123K — better13
Update frequencyEvery 9 days — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
Best chart rank#9 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.113.0 — better
Further details — not scored
Size209 MB124 MB
Age rating4+4+
DeveloperZenvoice Inc.JZ Mobile 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%

Service Tech Work Orders Plus

All ratings13 ratings
Positive84.6%
Neutral0.0%
Negative15.4%
Written reviews11 reviews
Positive81.8%
Neutral0.0%
Negative18.2%

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

Service Tech Work Orders Plus

Not enough reviews yet to summarise bugs or requests.

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
10 purchases

Service Tech Work Orders Plus

One-time10
  • Messages & Reminders$3.99
  • Estimates Bids & Quotes 2$3.99
  • Scheduler$3.99
Show 7 more
  • Auto Service Calls$4.99
  • Cloud Sync Secure Data Sharing$6.99
  • Profits Expenses & PDF Reports$6.99
  • All Productivity In-Apps$9.99
  • Monthly Statements$14.99
  • Craftsman NCE Cost Book$14.99
  • Mac User Full License$19.99

Questions

Is Invoice Maker ▸ Invoice Simple free?
Invoice Maker ▸ Invoice Simple is free to download, with in-app purchases available.
Is Service Tech Work Orders Plus free?
Service Tech Work Orders Plus costs $7.99, and also offers in-app purchases.
Which has better reviews, Invoice Maker ▸ Invoice Simple or Service Tech Work Orders Plus?
Invoice Maker ▸ Invoice Simple is rated higher. Invoice Maker ▸ Invoice Simple averages 4.9 out of 5 from 123K ratings, while Service Tech Work Orders Plus averages 4.2 from 13 ratings.
Do Invoice Maker ▸ Invoice Simple or Service Tech Work Orders Plus have ads?
Neither Invoice Maker ▸ Invoice Simple nor Service Tech Work Orders Plus shows ads.
Which is updated more often, Invoice Maker ▸ Invoice Simple or Service Tech Work Orders Plus?
Invoice Maker ▸ Invoice Simple ships an update every 9 days, and Service Tech Work Orders Plus every 3 months. Most recently, Invoice Maker ▸ Invoice Simple was updated on September 25, 2026 and Service Tech Work Orders Plus on September 17, 2026.

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