# Billdu vs Invoice Simple

The clearest difference is rating: Billdu at 4.8 against Invoice Simple's 1.0. Billdu also leads on ratings volume (26K vs 1) and chart position (#70 vs unranked). Invoice Simple's advantage is update cadence (every 5 days vs every 2 weeks) and review sentiment (100% vs 90%). On price, ads, in-app purchases and monetization model 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 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Billdu holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Billdu has 26K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 90% of Billdu's written reviews are positive against 100% of Invoice Simple's, so the app with the better star average is not the one people write more warmly about.

Billdu ships an update every 2 weeks, Invoice Simple every 5 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## 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)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/invoice-simple-estimate-app/id6760185558/reviews) |
| Number of ratings | **26K** | 1 |
| Positive reviews | 89.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#70** | — |
| Size | 207 MB | 120 MB |
| Requires iOS | 17.0 | **14.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BILLDU LTD](https://appshunter.io/developer/501173313) | [Alpeshbhai Dungrani](https://appshunter.io/developer/1870178939) |

## What reviewers say

### Billdu

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

**Currently charting:** #70 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-estimate-app/id6760185558)

Create professional invoices, estimates, and receipts quickly. Manage clients, track payments, and generate reports to understand business performance. Supports multiple businesses and offers customization options.

**Highlights:** Create professional invoices and estimates, Manage client contact details, Track payments and overdue invoices, Generate revenue and sales reports, Support for multiple businesses, Customizable invoice templates, Automated payment reminders

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $6.99 | per 7 days |
| Weekly Subscription | $6.99 | per 7 days |


## 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?

Billdu is rated higher. Billdu averages 4.8 out of 5 from 26K ratings, while Invoice Simple averages 1.0 from 1 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 5 days. Most recently, Billdu was updated on October 30, 2026 and Invoice Simple on October 24, 2026.

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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.*