Slop Invoices · Beta
Invoices
Gapless invoices, payments and a ledger. Nothing uploaded.
Nothing to install: just open it in the browser on your phone, tablet or computer. It keeps working without internet after your first visit. Want an icon on your home screen? On iPhone or iPad, tap Share, then Add to Home Screen. On Android, open the browser menu and tap Add to Home screen. On a computer, click the install icon in the address bar.
Slop Invoices has these main features: Gapless numbers on issue, posted to the ledger; Payments, overdue and balances by customer.
Beta: still being tested, so some parts may change.
What you can do with Slop Invoices
- Free invoice generator with templates and PDF
- Make an invoice with VAT or sales tax
- Recurring invoices every week or month
- Make a credit note for an invoice
- Customer statement and payment reminders
- A free Wave alternative for invoicing, in your browser
How Slop Invoices compares
Slop Invoices next to Zoho Invoice, Wave, Invoice Ninja: facts from each tool's own pages, checked 2026-10-24. We make Slop Invoices.
| Tool | Price | Free plan limits | Account | Online payments | Where invoices are kept |
|---|---|---|---|---|---|
| Slop Invoices ours | Free | None set by us | Not needed | No (record payments by hand) | In your browser, on this device |
| Zoho Invoice | Free | Up to 500 invoices a year, 2 users, 3 projects | Zoho account | Yes ("multiple payment options") | Zoho's servers |
| Wave | Starter free; Pro $19 a month or $190 a year (USD) | Unlimited invoices and estimates on Starter | Wave account | Yes: 2.9% + $0.60 per card payment on Starter | Wave's servers |
| Invoice Ninja | Free; Pro $14 a month or $140 a year | 5 clients, unlimited invoices | Invoice Ninja account | Yes: Stripe, PayPal, Square, GoCardless and more | Invoice Ninja's servers (its site links to a self-hosting option) |
| Feature | Slop Invoices ours | Zoho Invoice | Wave | Invoice Ninja |
|---|---|---|---|---|
| Invoices on the free plan | No limit | 500 a year | Unlimited | Unlimited |
| Clients on the free plan | No limit | Not stated | Not stated | 5 |
| Invoice templates with your logo | Yes | Yes | Yes | Yes |
| PDF invoices | Yes | Yes | Yes | Yes |
| Tax rates per line | Yes | Not stated | Not stated | Yes |
| Several currencies | No | Not stated | Not stated | Yes |
| Recurring invoices | Yes | Yes | Partly | Yes |
| Quotes or estimates | In Slop Quotes | Yes | Yes | Yes |
| Online card payments | No | Yes | Yes | Yes |
| Automatic payment reminders | Partly | Yes | Partly | Partly |
| Client portal | No | Yes | Not stated | Yes |
| Expense tracking | In Slop Expenses | Yes | Yes | Yes |
| Time tracking | In Slop Timesheets | Partly | Not stated | Yes |
| No branding of the tool on your invoices | Yes | No | Partly | Partly |
| Mobile app | Works in the browser | Yes | Yes | Yes |
| No account needed | Yes | No | No | No |
| Invoices kept on your device | Yes | No | No | No |
The full comparison, with sources: The best free invoicing software, compared
Feature matrix
| Feature | Status | File types |
|---|---|---|
| Gapless numbers on issue, posted to the ledger | Beta | Not listed yet |
| Payments, overdue and balances by customer | Beta | Not listed yet |
| Printable invoice and PDF | Beta | Not listed yet |
| Void while unpaid | Beta | Not listed yet |
File types
No specific file types are listed for this app yet.
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