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Invoice Maker ▸ Invoice Simple

by Zenvoice Inc.

  • Business
  • Free
View on the App Store
Rating
4.9
122.8K ratings · US storefront
Top 21%among 130 Business apps
Last update
Oct 7, 2026
Version 6.16.0
Size
233 MB
Category
Business
Tracked since
Oct 9, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

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

What’s new

Release notes for the latest version, as written by the developer.

v6.16.0

Welcome to the new Invoice Simple experience!

We've been working hard on improving our app's performance and stability while delivering the invoicing experience you expect with us.

Let us know what you think and feel free to contact our 24/7 support team if you come across any issues

  • various bug fixes

Rank history

Daily position in the Italy charts. #1 is at the top.

Best rank
#23
Current rank
#51
Days charting
7 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

70/100

Not flagged as small & simple

  • Developer size100% · 25

    Developer: 1 app on the charts

  • Audience size0% · 20

    Ratings: 122,822

  • App size25% · 10

    Size: 233 MB

  • Price model80% · 15

    Price model: free with in-app purchases

  • Demand proof100% · 30

    Best rank #1, 135 countries

An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2

How the score works

Version history

  • 6.16.0LatestReleased Oct 7, 2026