The Invoice Simple Insider’s Guide
Everything we know about Invoice Simple in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
Invoice Simple
The Insider’s Guide
Mobile and web invoice maker with monthly invoice caps
Every plan, grade, refund rule and rival among accounting and invoicing tools, read from Invoice Simple’s own pages.
Made by Zenvoice Inc. · checked Nov 13, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from Invoice Simple’s own pages, its app-store listings and our grades. Every fact in it is on Invoice Simple’s page too, where it is kept up to date. Checked Nov 13, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.6
GPA, above 94 of the 127 other accounting and invoicing tools we grade
Invoice Simple makes invoices, estimates and receipts from a phone, tablet or browser, and sends them by email, text or WhatsApp. Clients can pay through PayPal or by card, and a QR code can be printed on the invoice. Three paid packages differ mainly in how many invoices can be sent each month.
To get you started, here are 9 things to know about Invoice Simple, taken from its own pages and our grades.
- 1
Best for invoices from a phone
Invoice Simple makes invoices, estimates and receipts from a phone or browser and sends them by email, text or WhatsApp.
- 2
Paid plans start at $6.99 a month
As its pricing page puts it: $6.99 per month, as listed in the US App Store.
- 3
You can try it first
14-day free trial with Premium features, no purchase needed
- 4
It runs on 3 platforms
Web, iOS and Android.
- 5
Invoices, estimates and receipts
Create documents on a phone or in a browser, turn an estimate into an invoice in one step, and add photos, discounts and signatures.
- 6
Online and QR payments
Clients can pay from the invoice by card, debit, PayPal or Venmo (US only), or by scanning a QR code printed on it.
- 7
Read receipts and reminders
See when a sent invoice was delivered and read, and send due-date reminders from message templates.
- 8
A 2.6 GPA, above 94 of 127
That is against the other accounting and invoicing tools we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
The plain part of Invoice Simple you could make: invoicing, quotes and estimates, reports and templates. What surrounds it you could not. The 1 things listed below take a company, not a weekend.
Invoice Simple at a glance
- Pricing
- Free trial, from $6.99 per month, as listed in the US App Store
- Free plan
- No
- Free trial
- 14-day free trial with Premium features, no purchase needed
- Runs on
- Web, iOS, Android
- Made by
- Zenvoice Inc.
- Category
- Accounting & Invoicing
- Our grade
- 2.6 GPA, good
- Store rating
- 4.9 on the App Store, 122,834 ratings
The report card
Best for invoices from a phone
Invoice Simple makes invoices, estimates and receipts from a phone or browser and sends them by email, text or WhatsApp. But Essentials allows only 3 invoices a month and Plus 10, unlimited needs Premium at $21.99, and we could only read prices from the App Store.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | C | $6.99 a month in the US App Store buys 3 invoices. Unlimited invoicing is $21.99, near the category's middle plan. |
| Free plan and trial | C | A 14-day free trial of Premium with no purchase needed. There is no free plan. |
| Features | C | Invoices, estimates, receipts, online and QR payments and read receipts. It does invoicing fully, which is a smaller job than accounting: no ledger. |
| Ease of use | A | 4.9 from about 123,000 App Store ratings. Open it and make an invoice. |
| Platforms and integrations | B | Web, iPhone and Android, with PayPal, Stripe and WhatsApp. No desktop app. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who Invoice Simple is for
- Fits if you invoice from your phone, between jobs
- Works for tradespeople who want invoices sent by text or WhatsApp
Who it is not for
- Tight if you send more than 3 invoices a month, since Essentials stops there and Plus stops at 10
- Pricey if you want unlimited invoices, which is $21.99 a month on Premium
- Watch out: prices here are the US App Store's monthly prices, and the web prices weren't checked
- Watch out: Venmo payments are US only, and the annual prices aren't published on the pages we read
Good to know
Good for
- Tradespeople and side businesses invoicing from a phone
- Owners who send only a handful of invoices a month
- Small businesses that want clients to pay from the invoice
Worth knowing
- Essentials allows only 3 invoices a month and Plus 10; unlimited invoicing needs Premium.
- Prices here are the monthly in-app purchase prices in the US App Store, which list several legacy tiers; the vendor's own site blocked automated reading.
- The help center says annual plans get 2 months free, but gives no annual prices.
- Venmo payments are US only.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$6.99
A month to start
Invoice Simple is a paid product with a free trial, starting at $6.99 per month, as listed in the US App Store.
Essentials
$6.99
per month, App Store price; web price not checked
Up to 3 invoices or estimates a month, online payments, QR code payments and read receipts.
Plus
$14.99
per month, App Store price; web price not checked
Everything in Essentials, up to 10 invoices a month, photos, signature, saved clients and items, due-date reminders.
Premium
$21.99
per month, App Store price; web price not checked
Everything in Plus, unlimited invoices, client signatures, business summary reports and priority support.
Trying it first
14-day free trial with Premium features, no purchase needed
Read from apps.apple.com on Nov 13, 2026.
Ways to pay less
Annual discount
Annual plans get 2 months free
Invoice Simple's help center says subscribers to an annual plan are eligible for 2 months free.
Stated on help.invoicesimple.com
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
3
Places it runs: Web, iOS and Android
Mobile and web invoice maker with monthly invoice caps. Here is what it does, as its own site describes it, and what it covers: templates, invoicing, reports, quotes and estimates.
Invoices, estimates, receipts, online and QR payments and read receipts.
- Invoices, estimates and receipts
- Create documents on a phone or in a browser, turn an estimate into an invoice in one step, and add photos, discounts and signatures.
- Online and QR payments
- Clients can pay from the invoice by card, debit, PayPal or Venmo (US only), or by scanning a QR code printed on it.
- Read receipts and reminders
- See when a sent invoice was delivered and read, and send due-date reminders from message templates.
- Saved clients and items
- Frequently used line items and client details are stored so repeat invoices need less typing.
- Business summary reports
- Premium builds monthly and yearly income reports and shows top clients, with export to an accountant.
- Phone and browser apps
- Separate Android and iOS apps and a web app, so invoices can be made on the road or at a desk.
Where it runs
- Web
- iOS
- Android
What it works with
- PayPal
- Stripe
Invoice Simple is made by Zenvoice Inc.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
94/127
Other accounting and invoicing tools it is graded above
Invoice Simple's GPA of 2.6 is higher than 94 of the 127 other accounting and invoicing tools we grade, and level with 14.
It stands best on ease of use (A, above 121 of 127) and worst on features (C, above 7).
Its paid plans start at $6.99 a month, against a middle price of $18.09 for the category: 14 of the 90 others that charge start lower.
On features, ease of use and platforms it scores 3.0 out of 4. 1 tool scores higher and costs less.
Each grade against the category
Every bar is all 128 accounting and invoicing tools we grade, cut by the letter each got. Invoice Simple’s own letter is outlined.
- CValue for moneyAbove 19 of 127
- CFree plan and trialAbove 35 of 127
- CFeaturesAbove 7 of 127
- AEase of useAbove 121 of 127
- BPlatforms and integrationsAbove 28 of 127
Price against what you get
Each dot is one of 101 accounting and invoicing tools. Further left costs less; higher up scores better on features, ease of use and platforms. Invoice Simple is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
The plain part of Invoice Simple you could make: invoicing, quotes and estimates, reports and templates. What surrounds it you could not. The 1 things listed below take a company, not a weekend.
It is one of the better ones too: its GPA of 2.6 is higher than 94 of the 127 other accounting and invoicing tools we grade. It costs $83.88 a year.
What you could make
- Invoicing, quotes and estimates, reports and templates: an app builder makes these well.
What you could not
- A real app for iOS and Android. Something home-made would be a web page.
What this rests on. Invoice Simple’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Invoice2go, Bookipi, Billdu, Zoho Invoice and Wave
The 5 tools Invoice Simple is most often weighed against, with where each one differs from it.
- 2.2GPA
Invoice2go
Free trial · from $79.99/yr
Invoice and estimate app for small service businesses.
- Invoice Simple also covers templates.
- Invoice2go also covers time tracking and expense tracking.
- 2.4GPA
Bookipi
Free plan · from $7.60/mo
Invoice, quote and e-signature app for small businesses.
- Bookipi has a free plan. Invoice Simple does not, though it has a free trial.
- Invoice Simple also covers templates and reports.
- Bookipi also covers expense tracking and appointment booking.
- 2.4GPA
Billdu
Free trial · from $4.99/mo
Invoice maker for freelancers and small businesses.
- Invoice Simple also covers templates.
- Billdu also covers expense tracking.
- 3.6GPA
Zoho Invoice
Free
Free invoicing app from Zoho for freelancers and small businesses.
- Zoho Invoice has a free plan. Invoice Simple does not, though it has a free trial.
- Only Zoho Invoice lists Windows and macOS apps.
- Invoice Simple also covers templates and quotes and estimates.
- 2.4GPA
Wave
Free plan · from $19/mo
Free invoicing and bookkeeping for US and Canadian small businesses.
- Wave has a free plan. Invoice Simple does not, though it has a free trial.
- Invoice Simple also covers templates and quotes and estimates.
- Wave also covers bookkeeping, expense tracking and payroll.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
14
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is Invoice Simple free?
No, Invoice Simple is a paid product, but you can try it first. 14-day free trial with Premium features, no purchase needed.
How much does Invoice Simple cost?
Invoice Simple lists 3 plans. Essentials: $6.99 per month, App Store price; web price not checked.
What platforms does Invoice Simple work on?
Invoice Simple is available on Web, iOS and Android.
Does Invoice Simple offer any discounts?
Invoice Simple publicly lists the following: Annual plans get 2 months free.
How is Invoice Simple rated?
Invoice Simple's iPhone and iPad app averages 4.9 out of 5 from 122,834 ratings on the App Store in the United States, as read on Nov 13, 2026.
Does Invoice Simple have a Windows app?
No Windows app was listed when its pages were read on Nov 13, 2026. Invoice Simple is listed for Web, iOS and Android.
Does Invoice Simple have a macOS app?
No macOS app was listed when its pages were read on Nov 13, 2026. Invoice Simple is listed for Web, iOS and Android.
Is Invoice Simple open source?
Invoice Simple is not described as open source on its own site, as read on Nov 13, 2026.
What does Invoice Simple integrate with?
Invoice Simple's listing names PayPal, Stripe and WhatsApp. A listing names up to eight integrations, so it may connect to more.
Who makes Invoice Simple?
Invoice Simple is made by Zenvoice Inc.
What are the alternatives to Invoice Simple?
The closest alternatives to Invoice Simple in our directory are Invoice2go, Bookipi, Billdu, Zoho Invoice and Wave.
How does Invoice Simple compare with other accounting and invoicing tools?
Invoice Simple's GPA of 2.6 is higher than 94 of the 127 other accounting and invoicing tools we grade, and level with 14.
Is Invoice Simple good value for money?
ToolGPA grades Invoice Simple C for value for money. Its paid plans start at $6.99 a month, against a middle price of $18.09 for the category: 14 of the 90 others that charge start lower.
Could I make my own version of Invoice Simple?
The plain part of Invoice Simple you could make: invoicing, quotes and estimates, reports and templates.
Where this guide comes from
The prices, plans, platforms and features were read from Invoice Simple’s own pages on Nov 13, 2026, and the grades were given on Nov 13, 2026. Graded from this listing, whose facts were read from Invoice Simple's App Store listing and help pages on 13 November 2026, and its App Store rating. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by Zenvoice Inc. Prices change, so check invoicesimple.com before you buy.
- apps.apple.com/us/app/invoice-simple-invoice-maker/id694831622
- help.invoicesimple.com/en/articles/7337194-what-is-invoice-simple-essentials
- help.invoicesimple.com/en/articles/7337195-what-is-invoice-simple-plus
- help.invoicesimple.com/en/articles/7337197-what-is-invoice-simple-premium
- help.invoicesimple.com/en/articles/10707933-does-invoice-simple-offer-a-free-trial
- help.invoicesimple.com/en/articles/6106506-how-do-i-get-started-with-the-mobile-app-and-the-web-app
- help.invoicesimple.com/en/articles/11060667-how-can-i-get-unlimited-invoicing
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
7,721
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
7,721
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- Invoice Simple, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/invoice-simple
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "Invoice Simple: The Insider's Guide", checked Nov 13, 2026. https://toolgpa.com/tools/invoice-simple
Know someone choosing between accounting and invoicing tools?
Send them this guide: toolgpa.com/tools/invoice-simple/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded accounting and invoicing tools after Invoice Simple, each with an Insider's Guide of its own.
- Accounting & Invoicing Insider's GuideEvery one of the 129 accounting and invoicing tools we grade, compared
- Zoho Invoice Insider's GuideFree invoicing app from Zoho for freelancers and small businesses3.6 GPA
- Zoho Books Insider's GuideOnline accounting from Zoho, with a free plan and six paid tiers3.4 GPA
- Cash App Taxes Insider's GuideFree federal and state tax filing inside Cash App3.2 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what Invoice Simple’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Invoice Simple is a trademark of its owner, and this guide is not made, paid for or approved by Zenvoice Inc. Prices and plans change: check invoicesimple.com before you buy.