Wow InvoiceWow InvoiceBoth make invoices and estimates on your phone and take card payments. The big differences are invoice limits, languages and who each one is built for. Here is the honest version.
| Wow Invoice | Invoice Simple | |
|---|---|---|
| Price | Free to download | Essentials $6.99/mo (3 invoices), Plus $14.99 (10), Premium $21.99 (unlimited). Prices in USD, may vary by currency |
| To start | Free download | 2 free documents and 1 send, then a 14-day trial |
| Works on | iPhone and Android | iPhone, Android and web |
| Online card payments | Yes, through Stripe: card, Apple Pay, Google Pay | Yes, Stripe or PayPal; US cards 3.49% + $0.49 |
| Estimates → invoice | Yes | Yes |
| Client needs the app | No, a link that opens in any browser | No |
| Languages | English, Spanish, French, German, Italian | English and 22 more, Spanish included |
| Google Play rating | 4.8 (3,760 ratings), 100K+ downloads | 4.8 (172K ratings), 5M+ downloads |
| App Store rating (US) | 5.0 (7 ratings) | 4.9 (123K ratings) |
Invoice Simple facts checked on 20 Oct 2026 on their own pages. Prices change, so check their site before you decide.
you send a few invoices a month in the US, want a web app on your computer, or need client signatures today.
you invoice from your phone, work outside the US or in Spanish, and want an app built around trades.
Download it free on iPhone or Android and make your first invoice in a minute. Your clients pay from a link, no app needed.
On its own pricing page: Essentials $6.99 a month for up to 3 invoices, Plus $14.99 for up to 10, Premium $21.99 for unlimited, with 2 months free on annual plans (checked 20 Oct 2026).
You can make 2 documents and send 1 for free, then there is a 14-day trial of Premium before you choose a plan.
No. They get a link that opens in any browser, and they can pay from it by card, Apple Pay or Google Pay.