Invoice Simple alternative
Invoiceflint vs. Invoice Simple
Invoice Simple and Invoiceflint are both mobile invoice apps with read receipts. Invoice Simple's plans are tiered by how many invoices you send each month and include online card payments; Invoiceflint has a single Pro plan with unlimited sending, sends by WhatsApp as well as email, and works offline — but doesn't process card payments.
Invoice Simple details checked November 1, 2026 from Invoice Simple on the App Store. Plans and prices change — check their site for the latest.
At a glance
Choose Invoiceflint if…
- You send more than a handful of invoices a month and don't want per-invoice limits.
- Your clients live on WhatsApp.
- You often work without signal and need the app to work offline.
- You want estimates clients accept online and convert to invoices in one tap.
Choose Invoice Simple if…
- You want clients to pay by card straight from the invoice.
- You'd like to create invoices on a computer as well as your phone.
- You only send two or three invoices a month and want the lowest-priced plan.
Key differences
Plans: invoice limits vs. unlimited sending
Invoice Simple's plans step up by volume — 3 invoices a month on Essentials, 10 on Plus, unlimited on Premium. Invoiceflint has one Pro plan, and it includes unlimited sending, so a busy month doesn't push you into a higher tier.
Getting paid
Invoice Simple can take card payments online, which is its biggest advantage. Invoiceflint doesn't process payments: clients pay you the way they already do — bank transfer, cash, check, or your own payment link in the notes — and you mark the invoice paid.
Sending and tracking
Both apps tell you when a client opens an invoice. Invoiceflint also opens WhatsApp with the invoice link and a message ready to send, and clients view, download, or accept documents in their browser without an account.
Try Invoiceflint free
Free to download for iPhone and Android. Pro starts with a free trial.
Questions
Is Invoiceflint a good alternative to Invoice Simple?
Yes, if you want unlimited sending on one plan, WhatsApp sending, and an app that works offline. If taking card payments through the invoice is essential, Invoice Simple is the better fit, because Invoiceflint doesn't process payments.
Does Invoiceflint limit how many invoices I can send?
No. Invoiceflint Pro includes unlimited sending of invoices and estimates. On the free plan you can create and preview unlimited drafts.
Can I move my clients from Invoice Simple to Invoiceflint?
There's no automatic import from Invoice Simple. You can import clients from your phone's contacts and save your common items once, after which repeat invoices take seconds.
Invoice Simple is a trademark of its owner. Invoiceflint is not affiliated with or endorsed by Invoice Simple.
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Invoices that tell you when they're opened
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