InvoiceSimple caps invoices on every plan below $19.99/month. See how Instant Invoice compares on pricing, AI features, and automated reminders — side by side.
InvoiceSimple is a straightforward invoicing app used by freelancers and small businesses across the US. It is well-designed and easy to use — but its tiered invoice caps and pricing structure create real limitations as your client volume grows.
This comparison covers where InvoiceSimple falls short, how Instant Invoice differs on the features that matter most, and who each product actually suits.
Where InvoiceSimple Has Limitations
InvoiceSimple's core limitations are structural, not cosmetic. They affect how usable the product is at different billing volumes.
Invoice Caps on Paid Plans
The Essentials plan at $6.99/month limits you to 3 invoices per month. The Plus plan at $13.49/month raises that to 10. Unlimited invoices are only available on the Premium plan at $19.99/month. For any freelancer with more than a handful of active clients, this forces an upgrade just to cover basic monthly volume.
No AI Invoice Generation
Every invoice on InvoiceSimple is created manually, field by field. There is no prompt-based or automated creation option.
No Fully Automated Payment Reminder Sequence
InvoiceSimple's Plus and Premium plans include a due date reminder, but it is a single notification — not an automated invoice follow-up sequence that continues until payment is received.
No Pay-As-You-Go Option
InvoiceSimple requires a monthly subscription. There is no option to pay per invoice or per feature for months when your volume is low.
Instant Invoice vs InvoiceSimple: Full Comparison
| Feature | InvoiceSimple Essentials | InvoiceSimple Plus | InvoiceSimple Premium | Instant Invoice Free | Instant Invoice Pro |
|---|---|---|---|---|---|
| Monthly price | $6.99/mo | $13.49/mo | $19.99/mo | $0 | $7/mo |
| Invoices per month | 3 | 10 | Unlimited | 2 total | Unlimited |
| AI invoice generation | No | No | No | Yes | Yes |
| Recurring invoices | No | No | No | Yes | Yes |
| Automated payment reminders | No | Due date only | Due date only | Yes | Yes |
| Online payment button | Yes | Yes | Yes | No | Yes |
| Client management | Basic | Basic | Basic | No | Yes |
| Revenue tracking | No | Summary reports | Summary reports | No | Yes |
| Watermark-free PDFs | Yes | Yes | Yes | No | Yes |
| Client signatures | No | No | Yes | Yes | Yes |
| Deposit collection | No | No | Yes | No | Yes |
| Pay-as-you-go option | No | No | No | Yes (Credit Packs) | No |
Pricing: What You Actually Pay for Unlimited Invoicing
The most direct comparison is at the unlimited invoice tier:
- InvoiceSimple Premium — $19.99/month
- Instant Invoice Pro — $7/month
That is a difference of $12.99/month, or $155.88 over a year, for the same core capability — unlimited invoices with online payment collection. For freelancers with irregular monthly volume, Instant Invoice also offers Credit Packs — one-time purchases that require no subscription:
- 4 watermark-free PDFs — $1
- 4 invoices with payment buttons — $1
- Both features on 4 invoices — $2
There is no equivalent option in InvoiceSimple.
Features Available on Instant Invoice
The following features are confirmed live on Instant Invoice as of March 2026:
AI Invoice Generation
Describe what you are billing for in plain language and Instant Invoice generates the invoice automatically (see how to write an invoice step by step) — line items, amounts, client details, and due date populated from your prompt. For example: type "Invoice $500 to Acme Co for website copy, due in 14 days" and the invoice is ready to review and send.
Recurring Invoices
For clients on a retainer or regular billing cycle, set the invoice once and it sends automatically on the same schedule each month. No manual creation required each cycle.
Automated Payment Reminders
Reminders are sent automatically before the due date, on the due date, and after the due date if the invoice remains unpaid — helping you prevent late invoice payments You do not need to write or send these manually.
Online Payment Button
Invoices on the Pro plan include a payment button. Clients click to pay by card — no bank transfer details required, no separate portal to log into.
Client Management
Store client details and reuse them on future invoices without re-entering information each time.
Revenue Tracking
The dashboard shows paid, pending, and overdue invoices in one view so you can track what has been received and what is outstanding.
Who Should Stay on InvoiceSimple
InvoiceSimple is the more suitable choice if:
- You send 3 or fewer invoices per month and the $6.99 Essentials plan covers your volume
- You are already on InvoiceSimple Essentials or Plus and do not need features beyond basic invoicing and payment collection
Who Should Consider Switching
Instant Invoice is worth evaluating if:
- You are on InvoiceSimple Plus or Premium and paying $13.49–$19.99/month for higher invoice volume
- You want AI to generate invoices from a text prompt rather than filling in fields manually
- You have retainer clients and want recurring invoices to run automatically each month
- You want a full automated reminder sequence rather than a single due date notification
- You have months of low invoice volume where a pay-as-you-go Credit Pack is more cost-effective than a subscription
How to Get Started
Instant Invoice's free plan includes 2 invoices — enough to test AI generation, PDF output, and the full invoice flow before committing to anything. No credit card is required. Pro is $7/month for unlimited invoices. Credit Packs are available from $1 for occasional use.
Frequently Asked Questions
Does InvoiceSimple have a free plan?
No. InvoiceSimple does not have a permanent free plan. It offers a 14-day free trial with full access to Premium features — including unlimited invoices, online payments, and deposit collection. Once the trial ends, a paid subscription is required. The entry-level Essentials plan starts at $6.99/month and is limited to 3 invoices per month.
What is the invoice limit on InvoiceSimple's paid plans?
The Essentials plan allows 3 invoices per month. The Plus plan allows 10. Unlimited invoices are only available on the Premium plan at $19.99/month.
Does Instant Invoice have a free plan?
Yes. The free plan includes 2 invoices in total, with access to AI invoice generation. Watermark-free PDFs and payment buttons are not included on the free plan — these require either a Pro subscription or a Credit Pack purchase.
Can I switch from InvoiceSimple to Instant Invoice without losing my data?
You can export your invoice history from InvoiceSimple before closing your account. Client details can be re-entered into Instant Invoice's client management feature. Historical records are best retained as exports from your previous tool.
Does Instant Invoice support client signatures?
Yes. Client signatures are available on both the free and Pro plans.
Pricing accurate as of March 2026. InvoiceSimple: Essentials $6.99/mo (3 invoices), Plus $13.49/mo (10 invoices), Premium $19.99/mo (unlimited). Instant Invoice: Free (2 invoices total), Pro $7/mo (unlimited), Credit Packs from $1.