Billdu and Billbooks start within four cents of each other a month, and the entry plans are not comparable: Billdu Lite is one user and ten clients with no estimates, no payment reminders and no recurring invoices. Billdu does more around the invoice though, including an online store, booking and a website builder.
Billdu sells more than invoicing: a store, bookings, a website and compliance features in several European countries sit alongside the invoices, and if you want those then the comparison is over and Billdu wins it. Billbooks does invoicing, quoting, expenses, time tracking and reporting, and puts almost all of it on the cheapest plan. The sharpest difference is not the feature list, it is what each company gives you for about eight dollars a month.
| Billbooks | Billdu | |
|---|---|---|
| Entry plan, billed monthlyBillbooks Basic vs Billdu Lite | $7.95/mo | $7.99/mo |
| Entry plan, billed annuallyBoth as a per-month average | $7.16/mo | $4.99/mo |
| Users on the entry plan | 2 | 1 |
| Clients on the entry planBilldu counts clients per business | 100 | 10 |
| Estimates and quotesNot on Billdu Lite | Every plan | Standard and up |
| Payment remindersNot on Billdu Lite | Every plan | Standard and up |
| Recurring invoices | Every plan | Premium only |
| Expense tracking | Every plan | Every plan |
| Time tracking against projects | Every plan | Not listed |
| Credit notes and proformaBoth list them | ||
| Purchase orders and delivery notesDelivery notes per their plan table | Not built in | Standard and up |
| Online store and bookingsA store sale generates the invoice | Not built in | |
| Xero pushGated to the top plan on both | Professional | Premium only |
| Free trial | 30 days, no card | 7 days |
Billdu plans and features as of 30 October 2026, read from their own pricing page and its plan comparison table with the billing switch checked in both positions. Billed monthly: Lite $7.99, Standard $14.99, Premium $27.99. Billed annually their page shows average monthly prices of $4.99, $9.99 and $19.99, under the footnote that displayed prices are average monthly prices when buying an annual subscription. Clients are 10, 50 and unlimited; team members 1, up to 2 and up to 10. Estimates and quotes, delivery notes, payment receipts, payment reminders, quote requests and the accountant connection are not on Lite. Recurring invoices, recurring expenses, the API, high priority support and Xero are on Premium only. Their trial is 7 days and their footnote says prices are the same in USD and EUR. Billbooks figures from our own pricing page, where annual billing saves 10%. Where their pricing page does not list a feature, no claim is made about it here. Prices can change. Sources: billdu.com/pricing, billbooks.com/pricing.
The invoicing features start at the bottom
Estimates, payment reminders and recurring invoices are on the cheapest Billbooks plan. On Billdu the first two need Standard and recurring invoices need Premium.
Two users and a hundred clients to begin
The entry plan covers 2 users and 100 clients rather than 1 and 10, so a second person and a growing client list do not push you up a tier.
Quotes that can be signed
Send a quote, let the client sign it digitally, and turn the accepted quote into an invoice without retyping it.
Billdu is the wider product and there are good reasons to pick it. It sells an online store where a sale generates the invoice, appointment booking for service businesses, an instant website builder, a barcode scanner, and purchase orders and delivery notes, none of which Billbooks has. It also carries country-specific e-invoicing compliance for Spain, Belgium and Slovakia, which matters a great deal if you invoice in one of them and not at all if you do not. And on annual billing its entry tier is genuinely cheaper than ours, at an average $4.99 a month against $7.16, so a one-person business with a handful of clients that does not need reminders or recurring invoices will pay less there. The case for Billbooks is narrower and simpler: if invoicing is the job, the cheapest plan already does the chasing, the quoting and the repeat billing.
Two users and a hundred clients on the entry plan, with the invoicing features included rather than tiered.
A plan built for high-volume transactions or business models that do not fit the mold.
Contact SalesReal reviews from people who send their own invoices
★★★★★
“I used to hate sending invoices and payment reminders. I never imagined a boring, cumbersome task could be this intuitive and fun.”
★★★★★
“I used to waste hours on invoicing. With Billbooks it is all done before my coffee gets cold, so I focus on growing my store.”
★★★★★
“We are always on the move, and Billbooks keeps our billing just as fast and reliable. No training needed, just invoices out and money in.”
An app so good you will want to get tasks done instead of putting them off. Stay on track and keep your cashflow going.
On monthly billing they start four cents apart, at $7.95 against $7.99, but the entry plans are very different: Billbooks Basic gives 2 users and 100 clients with estimates, payment reminders and recurring invoices, while Billdu Lite gives 1 user and 10 clients with none of those three. On annual billing Billdu Lite is cheaper, at an average $4.99 a month against our $7.16.
Quite a lot around the invoice: an online store where a sale generates the invoice, appointment booking, an instant website builder, a barcode scanner, purchase orders and delivery notes, and country-specific e-invoicing compliance for Spain, Belgium and Slovakia. Billbooks has none of those and is an invoicing tool rather than a small-business suite.
Use Billdu if you want the shop, bookings or website alongside the invoicing, or if you need its country-specific e-invoicing. Use Billbooks if invoicing is the job and you want reminders, recurring invoices, estimates and more than ten clients without moving up a tier, because those sit on the cheapest Billbooks plan and above the cheapest Billdu one.
Yes, by plan: 10 clients on Lite, 50 on Standard and unlimited on Premium, counted per business. Billbooks Basic allows 100 clients, Standard 500 and Professional unlimited, so the entry tiers differ by ten times on that limit.
Billed monthly it is $7.99 for Lite, $14.99 for Standard and $27.99 for Premium. Billed annually their page shows average monthly prices of $4.99, $9.99 and $19.99. Lite covers 1 team member and 10 clients, Standard up to 2 members and 50 clients, and Premium up to 10 members with unlimited clients. Figures read from their pricing page on 30 October 2026.
On its Premium plan only, which is $27.99 a month billed monthly, per its own plan comparison table. Recurring expenses, the API and the Xero integration sit on the same tier. Billbooks includes recurring invoices on every plan, starting at $7.95.
No. Their plan table marks estimates and quotes, delivery notes, payment receipts, payment reminders, quote requests and the accountant connection as not included on Lite, and available from Standard upward. Lite does include unlimited invoices, unlimited expenses, a client signature, invoice status tracking and a barcode scanner.
Billdu allows 10 clients on Lite, 50 on Standard and unlimited on Premium, counted per business. Billbooks allows 100 on Basic, 500 on Standard and unlimited on Professional. Plan limits here count every client record including inactive ones, so archiving does not free up room, only deleting does.
For a business that wants a shop, bookings or a website alongside its invoicing, or that needs e-invoicing compliance in Spain, Belgium or Slovakia, yes. For a business whose job is quoting, invoicing and chasing payment, Billbooks puts more of that on its cheapest plan and allows ten times the clients at the entry tier.
No. Billbooks is invoicing, quoting, expenses, time tracking and reporting, with payments taken through your own gateway. There is no storefront, no booking calendar and no website builder, and if those are what you are shopping for then Billdu is the better fit and this page will not argue otherwise.
Billbooks gives 30 days with no credit card; Billdu's pricing page offers 7 days. The free Billbooks calculators and generators need no account at all, so you can send a real invoice before signing up for anything.
A little kit of calculators and generators, on the house.
Other tools that tier the invoicing features: Billbooks vs Wave and Billbooks vs Invoice2go. The whole question of what sits on the cheapest plan: which invoicing tools put every feature on the cheapest plan. Every comparison in one place: compare Billbooks.
Compare Billbooks with others