Comparison

Invoice Lab vs Simple Invoice Maker

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

Head to head
About

Invoice Lab

Features
Read full description

Create a PDF invoice or estimate in a minute and see who still owes you. No account, works offline, your data stays on your device and in your own iCloud. FIRST INVOICE IN A MINUTE Type the client's name, add a line or two, and send a clean PDF from Mail, Messages or AirDrop. Taxes, discounts and totals are calculated to the cent. ESTIMATES THAT BECOME INVOICES Send a quote, and when the client accepts, turn it into an invoice with one tap. Lines, prices and taxes carry over. KNOW WHO OWES YOU The dashboard shows what is owed, what is overdue and what came in this month. Record partial payments and the balance due updates everywhere, including the PDF. DOCUMENTS CLIENTS TRUST 8 colour templates in 4 layouts, your logo, address and tax ID, long invoices across several pages, A4 or Letter by region. ALSO • Recurring invoices created on schedule when you open the app • Clients, price book and several businesses • Reports by month and quarter • iPhone and iPad, light and dark mode FREE AND PRO The first 3 invoices are free with PDF and sharing. Invoice Lab Pro unlocks unlimited invoices, recurring invoices, several businesses, all templates, your logo on documents and reports. Choose yearly (with a free trial when offered), monthly, or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period; manage them in iOS Settings. Privacy: https://spiroba.github.io/legal/invoice-lab/privacy Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Simple Invoice Maker

Features
Read full description

Create professional invoices in seconds — and get paid faster. Built for freelancers, contractors, and small businesses who need invoicing that just works, even offline. Trusted by thousands of self-employed professionals worldwide CREATE AND SEND IN SECONDS Build a polished PDF invoice in under a minute. Add your logo, line items, and payment terms — then send directly from the app. TRACK EVERY PAYMENT See who has paid, who is overdue, and your total revenue in one view. No spreadsheets. No chasing down numbers. MANAGE CLIENTS AND SERVICES Store client details and save your services once. Invoice repeat customers in two taps — everything pre-filled. SMART BUSINESS REPORTS Monthly revenue summaries, outstanding totals, and payment trends. Know exactly where your business stands. GST, VAT AND TAX-READY Add tax rates, GST numbers, and VAT — generate compliant invoices in any format your clients or accountants need. WORKS FULLY OFFLINE Create, edit, and send invoices without an internet connection. Everything syncs automatically when you are back online. HOW IT WORKS 1. Add your business details once 2. Create an invoice in under a minute — or duplicate a past one 3. Send as PDF, share via email, or download instantly "I send 10+ invoices a week. Invoiso is the only app that does not get in my way." — App Store review Download free and send your first invoice in minutes.

Screenshots

Invoice Lab4 screens
Simple Invoice Maker4 screens

Verdict

The call

The clearest difference is ads: Invoice Lab at none against Simple Invoice Maker's shown. Simple Invoice Maker's advantage is update cadence (every 2 weeks vs every 5 months) and iOS requirement (15.1 vs 26.0). On price, 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

Both are free to download. Invoice Lab sells 2 in-app purchases, starting at $4.99 per month and Simple Invoice Maker sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Invoice Lab ships an update every 5 months, Simple Invoice Maker every 2 weeks. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 3 level
Invoice Lab versus Simple Invoice Maker: the parameters behind the verdict, then further details
ParameterInvoice LabSimple Invoice Maker
PriceFreeFree
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.1 — better
Further details — not scored
Size9 MB75 MB
Age rating4+4+
DeveloperBoris SpiroDeep Saha

In-app purchases

2 purchases

Invoice Lab

Subscriptions2
  • Pro Monthly3 Days trial$4.991 Month
  • Pro Yearly7 Days trial$39.991 Year
2 purchases

Simple Invoice Maker

Subscriptions2
  • Invoiso Monthly Pro3 Days trial$3.991 Month
  • Invoiso Yearly Pro7 Days trial$34.991 Year

Questions

Is Invoice Lab free?
Invoice Lab is free to download, with in-app purchases available.
Is Simple Invoice Maker free?
Simple Invoice Maker is free to download, with in-app purchases available.
Do Invoice Lab or Simple Invoice Maker have ads?
Simple Invoice Maker shows ads; Invoice Lab does not.
Which is updated more often, Invoice Lab or Simple Invoice Maker?
Invoice Lab ships an update every 5 months, and Simple Invoice Maker every 2 weeks. Most recently, Invoice Lab was updated on October 24, 2026 and Simple Invoice Maker on October 16, 2026.

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