# Billdu vs Invoice Simple

Billdu and Invoice Simple both sit at 4.8 stars, but that hides the real split: 90% of Billdu's written reviews are positive against 64% of Invoice Simple's. Invoice Simple's advantage is chart position (#9 vs #77) and ratings volume (123K vs 26K). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Billdu sells 10 in-app purchases, starting at $7.99 per month and Invoice Simple sells 9 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Billdu against 4.9 for Invoice Simple. Both are backed by a comparable volume of ratings — 26K and 123K respectively. Written reviews are what separate them: 90% of Billdu's written reviews are positive against 64% of Invoice Simple's.

Both ship on a similar rhythm, roughly every 2 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Billdu | Invoice Simple |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (26K ratings)](https://appshunter.io/ios/app/billdu-invoice-estimate-maker/id527885754/reviews) | **[4.9 (123K ratings)](https://appshunter.io/ios/app/invoice-simple-invoice-maker/id694831622/reviews)** |
| Number of ratings | 26K | **123K** |
| Positive reviews | **89.9% of reviews** | 63.8% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | #77 | **#9** |
| Size | 207 MB | 221 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [BILLDU LTD](https://appshunter.io/developer/501173313) | [Zenvoice Inc.](https://appshunter.io/developer/990870994) |

## What reviewers say

### Billdu

[App page](https://appshunter.io/ios/app/billdu-invoice-estimate-maker/id527885754)

**Currently charting:** #77 Top Grossing · Business (US App Store)

Create professional invoices and estimates quickly for your small business. This app helps you get paid faster with online payment options, track expenses by scanning receipts, and manage clients and inventory. It's designed for freelancers and contractors to maintain a professional image and streamline billing.

**Highlights:** Customizable invoice templates, Instant estimates and invoices, Online payment processing, Receipt scanning for expense tracking, Client and inventory management, Multi-device synchronization

**Features:** Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LITE - 1 month | $7.99 | per month |
| STANDARD (Month) | $14.99 | per month |
| STANDARD - 1 month | $14.99 | per month |
| STANDARD - 1 month | $14.99 | per month |
| PREMIUM (Month) | $27.99 | per month |
| PREMIUM - 1 month | $27.99 | per month |
| 24 invoices | $59.99 | per year |
| STARTER (Year) | $59.99 | per year |
| STANDARD (Year) | $119.99 | per year |
| STANDARD - 12 months | $119.99 | per year |

**What reviewers like**

- 🚀 Easy to use
- 📊 Helpful business features
- 🖼️ Professional-looking invoices
- 🕰️ Time-saving
- 💻 Seamless mobile experience

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔍 Limited customization options
- 💳 Billing/payment issues
- 🕰️ Slow customer support response

**Reported bugs**

- Invoices not being received by clients
- Inconsistent invoice numbering
- Inability to save draft estimates

**Requested features**

- Improved date/time handling
- Ability to transfer data between businesses
- More customization options for invoices
- Integrated payment processing
- Enhanced reporting and analytics


### Invoice Simple

[App page](https://appshunter.io/ios/app/invoice-simple-invoice-maker/id694831622)

**Currently charting:** #9 Top Grossing · Business (US App Store)

Create and send professional invoices, estimates, and receipts quickly from your mobile device. This tool helps individuals and growing businesses manage billing, accept online payments, and stay organized. It offers customizable templates and easy client management.

**Highlights:** Create invoices, estimates, and receipts, Accept online payments, Customize invoice templates, Organize billing history, Send via email, text, or PDF, Track invoice status

**Features:** iPhone Duo support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Essentials Monthly | $6.99 | per month |
| Mobile subscription | $10.99 | per month |
| Monthly Side Business | $10.99 | per month |
| Monthly Business Sub | $11.99 | per month |
| Monthly Subscription | $11.99 | per month |
| Monthly subscription | $13.49 | per month |
| Plus Monthly | $14.99 | per month |
| Monthly Standard Subscription | $17.99 | per month |
| Premium Monthly | $21.99 | per month |

**What reviewers like**

- 🚀 Easy to use
- 👍 Professional-looking invoices
- 🚀 Quick and simple
- 👍 Saves time
- 👍 Convenient mobile access

**What reviewers complain about**

- 💰 Expensive subscription
- 🐛 Glitches and bugs
- 🔀 Inconsistent features across platforms
- 🔀 Confusing navigation
- 🔀 Limited customization options

**Reported bugs**

- Invoices not sending properly
- App crashing or freezing
- Inability to recover deleted invoices
- Syncing issues between mobile and desktop

**Requested features**

- Add ability to rearrange line items
- Improve search and filtering capabilities
- Integrate with accounting software
- Add option to track expenses and profitability
- Allow multiple business profiles in one account


## Frequently asked questions

### Is Billdu free?

Billdu is free to download, with in-app purchases available.

### Is Invoice Simple free?

Invoice Simple is free to download, with in-app purchases available.

### Which has better reviews, Billdu or Invoice Simple?

Invoice Simple is rated higher. Billdu averages 4.8 out of 5 from 26K ratings, while Invoice Simple averages 4.9 from 123K ratings.

### Do Billdu or Invoice Simple have ads?

Neither Billdu nor Invoice Simple shows ads.

### Which is updated more often, Billdu or Invoice Simple?

Billdu ships an update every 2 weeks, and Invoice Simple every 2 weeks. Most recently, Billdu was updated on November 3, 2026 and Invoice Simple on November 3, 2026.

### Which is more popular, Billdu or Invoice Simple?

Billdu currently peaks at #77 in the App Store charts, and Invoice Simple at #9. Chart position reflects recent download velocity rather than total install base.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*