Head-to-head

Billdu vs Invoice Simple

Billdu 4.8★ · Free to download 40

Winner Invoice Simple

Invoice Simple 4.9★ · Free + IAP 65

Invoice Simple is generally preferred for its ease of use and comprehensive features, despite recent price hikes and occasional bugs, while Billdu suffers from critical data loss issues and poor customer support.

Full reviews: Billdu · Invoice Simple

Invoice Simple offers a user-friendly experience for creating invoices and estimates, with many users praising its simplicity and features, though recent price increases and some bugs are a concern. Billdu, while appreciated by some for organization, is plagued by critical issues like disappearing client names and invoices, coupled with unresponsive customer support.

Head to head

Features edge: Invoice Simple^R2^R4^R8^R15

Billdu Billdu users appreciate its organizational capabilities, handling deposits and thank you notes, and its overall ease of use for creating invoices and quotes ^R2^R8. However, some users note the lack of features like customer signatures on estimates and the inability to attach pictures without the app crashing ^R4. There are also complaints about limitations on the number of clients allowed per subscription ^R15^R27^R35.

Invoice Simple Invoice Simple is praised for being a powerful, simple invoice maker that helps save paper . Users appreciate features like sending invoices via SMS and the ability to track finances . However, some users desire more advanced features like adding different options to estimates , recurring invoices , and a more efficient item library . The bookkeeping feature has bugs , and the dashboard is considered cluttered and inaccurate by some .

Ease of Use edge: Invoice Simple^R1^R3^R7^R8

Billdu Many Billdu users find the app easy to understand and use for creating invoices and estimates ^R8. However, a significant number of users report the app is complicated , slow, and glitchy . The most critical issue is the frequent disappearance of client names and invoice details, making the app unusable for many ^R1^R3^R7.

Invoice Simple Invoice Simple is widely praised for being simple, easy to use, and quick for creating invoices and estimates . Users appreciate its straightforward interface. However, some find the app not so simple, particularly when trying to create new clients without a full address . There are also complaints about the dashboard being a mess and issues with PDF exports and templates .

Reliability tie^R1^R3^R4^R7

Billdu Billdu has significant reliability issues, with numerous reports of client names disappearing from invoices and estimates ^R1^R3^R7. Users also report losing entire estimates ^R4^R7 and invoices . The app is described as buggy, slow, and prone to crashing ^R4. Some users also experienced issues with subscription status and mixed-up client invoices .

Invoice Simple Invoice Simple users report several reliability problems, including difficulty saving invoices ^R61, issues with printing or emailing invoices/estimates ^R64, and invoices ending up in spam . Some users experienced the app locking up or logging them out, preventing access to saved invoices . There are also complaints about estimates not calculating correctly, dropping discounts, and duplicating items , and reports being broken or inaccurate .

Price/Value tie^R6^R22^R27^R35

Billdu Billdu is considered pricey by some users ^R6^R22^R27^R35. Users complain about the cost increasing ^R22 and features that were once included becoming separate paid apps ^R22. There are also issues with limited client numbers per subscription, requiring more money for additional contacts ^R27^R35. Some users feel the value is no longer there, especially with the reported bugs ^R22.

Invoice Simple Invoice Simple faces widespread criticism for frequent and significant price increases ^R61^R63^R67^R70. Users report prices jumping from $99 to $219.99 annually ^R63 or from $9.99 to $18/month . Many also complain about the reduction in the number of invoices allowed per month for paid users, forcing them to upgrade to more expensive tiers ^R61^R67. Some feel the app is no longer worth the cost .

Support tie^R1^R18^R19^R22

Billdu Billdu's customer support is a major point of frustration for users. Many report that chat support crashes the app ^R1, support clicks do nothing ^R19, and it's difficult or impossible to contact anyone ^R18^R19. Users describe support as painfully slow ^R22, unresponsive, or only providing AI bot assistance . There are complaints that issues persist for months without resolution ^R19.

Invoice Simple Invoice Simple's customer service is frequently criticized as terrible ^R64^R73^R76. Users report long waiting times , only receiving AI bot replies , and support not responding to issues ^R64^R73^R76. Some users have waited weeks for acknowledged problems to be fixed without success ^R73^R76. The lack of phone support is also noted ^R63.

Pick Billdu if

You need a basic invoicing app and are willing to tolerate potential bugs and poor support for its organizational features, and if you don't mind manually re-entering client names frequently ^R2^R8^R18.

Pick Invoice Simple if

You need a straightforward and professional invoicing tool with features like SMS sending and payment integrations, and are prepared for potential price increases and occasional bugs .

Evidence note: Both apps have a high lifetime rating, but recent reviews for both are heavily skewed negative, primarily due to reliability issues, price increases, and poor customer support. For Billdu, the critical issue of disappearing client names is pervasive across many recent negative reviews. For Invoice Simple, the primary complaint is aggressive price hikes and reduced invoice limits for existing paid users.

Frequently asked

What are the main issues with Billdu?

The main issues with Billdu include client names disappearing from invoices and estimates, leading to data loss and frustration ^R1^R3^R7. Users also report poor or non-existent customer support ^R1^R18^R19 and the app being slow, glitchy, and crashing ^R4.

Why are users unhappy with Invoice Simple's pricing?

Users are unhappy with Invoice Simple's pricing due to frequent and significant price increases, with some reporting yearly costs jumping from $99 to over $200 ^R61^R63^R70. Additionally, the app has reduced the number of invoices allowed per month for existing paid users, forcing them to pay more for unlimited access ^R61^R67.

Does Invoice Simple have good customer support?

Invoice Simple's customer support is widely criticized as terrible, with users reporting long waiting times, only receiving AI bot responses, and issues remaining unfixed for weeks ^R64^R73^R76. There is no customer service phone number available ^R63.

What reviewers actually said

Built only from these 120 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

[R2] Billdu 5/5 · US K&B Floors and more: I absolutely love this app. It keeps everything so organized. From deposits to sending thank you notes for there payments. It is like having a secretary .
[R4] Billdu 1/5 · US App does not allow to Attach pictures: When I attach saved pictures to Estimate the App closes the Estimate and entire Estimate disappears/ get lost , can’t find it / Have to restart from the beginning. Sucks
[R8] Billdu 5/5 · US Operation: Easy to understand
[R15] Billdu 3/5 · US Pequeñas deficiencias: Por veces no me carga el link de la app cuando tengo que enviarlos por correo oh mensaje de texto y dan muy pocos clientes por la suscripción
[R1] Billdu 1/5 · US Disappearing names: My invoices are losing customer names and costing me money and time . When I tried to get customer service assistance the chat keeps crashing the app . Will be looking into alternative options moving forward. Keeps asking for a review when I'm in the middle of invoicing. After my subscription is up I'd rather do it by hand .
[R3] Billdu 3/5 · US Names on invoices keep disappearing: Names on invoices keep disappearing
[R7] Billdu 1/5 · US Glitches: Will not save client names,looses estimates.
[R6] Billdu 3/5 · US Great app, but little pricey: I like the app but it is a bit expensive and has some minor issues, but makes onsite billing easy.
[R22] Billdu 1/5 · US Save your money: I was a subscriber since 2019 and loved it for the first couple of years, but around 2025 things started going downhill. Like any company, they got super greedy, prices jumped to nearly $30 a month, features that used to be included were pulled out and turned into separate paid apps, and the value just wasn’t there anymore. On top of that, customer support became painfully slow, i
[R27] Billdu 3/5 · GB Greedy: I’ve had this app for a while now only lets you have 30 clients a year, for over £100 a year😠 won’t be with them next year.
[R35] Billdu 1/5 · US Money hole App: I’ve been using this app for almost 2 years now . This app is a money hole and that’s being minus about what I should really say. They charge 1499 a month to be able to add clients send out estimates keep track of everything. But you can only have so many clients saved before they’re asking for more money a month to be able to add more people to your contacts. Still in search of an
[R18] Billdu 3/5 · US Glitches: Great app. I get everything done from my phone. Saves me time and money. I’ve had issues with client names being deleted while making changes to their quote. It seems very difficult to find any way to contact or talk to someone about my issues. I am able to manually go in and add their name every time I make a change so no data loss but it is frustrating since I have so much info in this
[R19] Billdu 1/5 · US No support: I can’t contact support, I click on support and it does nothing. Every time I send an estimate or an invoice it deletes the contact information from the document and then I need to edit the document to add the contact information back. This has been going on for months and none of the updates have done anything to even give me the ability to contact support about this. Fix it and I wil
[R61] Invoice Simple 1/5 · US Terrible!: I have had this app since 2018 It’s impressive how bad this app has become. -They keep raising the price of the app -They have now reduced the amount of invoices I can make each month so it’s not viable for an actual business -I have to modify invoices several times to get them to save (took 10 mins and 8 attempts to mark an invoice as paid) Very disappointed, at one point this a
[R63] Invoice Simple 3/5 · US App is good but: The app is good, support is ok when it goes down, no customer service phone Have been using it for 4 years and every year a price increase started at $99.00 then 149.99 and now $219.99 a 47 percent increase (Crazy)especially for a small business
[R67] Invoice Simple 1/5 · US Greedy: I’ve been paying for this app for years. They recently reduced the number of invoices per month to THREE. That’s PAID. The upcharge is ridiculous. This doesn’t need to be a subscription in the first place. It’s a static tool. They already try and push you to use their billing services and take a cut. Now they’re pushing the subscription tiers by reducing offered services to existing users.
[R70] Invoice Simple 1/5 · US Prices to high: I’ve had this app for many years now. They keep rising their prices every month it seems now. Leaving the app now. Smh
[R64] Invoice Simple 1/5 · US Terrible customer service: I have used this app for years and also purchased the unlimited version. But as of 2 months ago I can no longer print or email any invoices/ estimates to my clients. All I get is an error message. I’ve deleted and reinstalled the app a dozen times now and it’s the same thing everytime. I’ve reached out to customer service a few times now and all they say is the back end
[R73] Invoice Simple 1/5 · US DON’T BUY: No support. Been waits weeks for them to fix a problem they acknowledged
[R76] Invoice Simple 1/5 · US Wolfe: What ever you do don’t buy the Invoice Simple. I’ve given them more then a month to fix an issue & it still hasn’t been fixed. They don’t have any back end support. Which means if you have a problem they have no way to fix it. I’ve had the app since 2018. Running 2 companies with it. Recently I had multiple problems with it over a several week period. I made them aware of it with over a d

Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store