iPhone users want to invoice on the go — send an invoice from a café, track who's paid from the train, chase a late client while waiting in line. Here's what actually works in 2026, ranked by what freelancers need most.
Not all invoice apps are equal on mobile. Here are the five features that separate a genuinely useful iPhone invoicing tool from a glorified PDF maker:
You want to invoice a client immediately after a session — even without perfect WiFi. Native apps store data locally; PWAs cache recent data. Either works, as long as it's not completely broken offline.
Your client needs a real invoice, not a screenshot. Look for apps that generate properly formatted PDFs with your logo, line items, VAT breakdown, payment terms, and bank details.
This is the #1 feature most mobile invoice apps skip. Sending an invoice is only half the job. If the client doesn't pay, you need reminders to go out automatically — not manually. Fewer than 3 apps in this list do this well.
If you invoice internationally or charge VAT (21%/20%/7% etc.), your app needs to handle this. Not all mobile apps support multiple VAT rates or non-USD currencies properly.
You may invoice from iPhone but review from desktop. Cloud sync is essential — invoices created on mobile should appear instantly on web and vice versa.
Chaser is built specifically around the problem of getting paid. Create the invoice, send it, and Chaser automatically sends 4 escalating follow-up emails (day 3 → firm, day 7 → firmer, day 14 → urgent, day 30 → final demand). Works as a PWA you install from Safari — opens full-screen like a native app.
Invoice Simple is the most downloaded invoice app in the App Store. Native iOS means great offline support and smooth UX. Good for quick, simple invoices. Lacks automation — follow-ups are fully manual.
Wave is free forever with unlimited invoices. The mobile app exists but is more limited than the desktop version. Good for basic invoicing; not designed for chasing late payments.
Zoho Invoice is genuinely powerful for a free app — handles multi-currency, multiple tax rates, and project-based billing. Mobile app is solid. Reminders exist but require manual setup per invoice.
Invoice2Go was built mobile-first and it shows — the iPhone experience is smooth and fast. Templates look professional. No automated reminders, but the on-device experience is excellent for field workers.
Square Invoices is free and integrates seamlessly with Square's payment terminal — great for service businesses that take in-person payments too. Limited outside the Square ecosystem.
| App | Price | Auto Reminders | Offline | VAT | |
|---|---|---|---|---|---|
| Chaser 🐕 | €20/mo | ✅ | ✅ 4-stage | ⚠️ PWA | ✅ |
| Invoice Simple | Free/$9.99 | ✅ | ❌ | ✅ Native | ⚠️ |
| Wave | Free | ✅ | ❌ | ⚠️ | ⚠️ |
| Zoho Invoice | Free+ | ✅ | ⚠️ Manual | ✅ | ✅ |
| Invoice2Go | $5.99/mo | ✅ | ❌ | ✅ Native | ⚠️ |
| Square Invoices | Free | ✅ | ❌ | ⚠️ | ❌ |
Chaser is a Progressive Web App (PWA) — it installs directly from Safari without going through the App Store. Here's how:
ℹ️ Note: PWA installation only works via Safari on iPhone. Chrome and other browsers on iOS do not support "Add to Home Screen" as a full PWA.
Once installed, Chaser caches your most recent data so you can view your invoice list even without a connection. Creating or sending invoices requires internet access.
Create your invoice on iPhone, send it, and Chaser automatically handles every follow-up. 4 escalating emails. Zero manual work.
Try Chaser free →Free for first 3 invoices. No credit card needed.
Wave and Zoho Invoice both offer free plans for iPhone. Wave is completely free but has limited mobile features. Zoho Invoice's free tier allows up to 1,000 invoices per year. For automated payment reminders on mobile, Chaser is the best option — it works as a PWA installable on your iPhone home screen.
Yes. Chaser is a Progressive Web App (PWA). Open chaser.works in Safari, tap the Share button, then tap 'Add to Home Screen'. The app icon appears on your home screen and opens full-screen, just like a native app. No App Store download required.
Most web-based invoice apps (including Chaser as a PWA) work partially offline — you can view cached invoices without a connection. Creating new invoices or syncing requires internet. Fully native iOS apps like Invoice Simple and Invoice2Go work better offline because they store data locally.
Very few. Chaser is specifically built around automated payment escalation — it sends 4 escalating reminder emails automatically (day 3, 7, 14, 30 after due date) without you having to do anything. Most other apps require you to manually send each follow-up.
Yes — Chaser, Invoice Simple, Invoice2Go, and Zoho Invoice all support PDF invoice creation from iPhone. Chaser generates professional PDFs with your logo, client details, line items, VAT breakdown, and payment link. You can email them directly from your phone.