# Billdu vs Invoice Generator－Estimate App

The clearest difference is ratings volume: Billdu at 26K against Invoice Generator－Estimate App's 51. Billdu also leads on update cadence (every 2 weeks vs monthly) and chart position (#72 vs unranked). Invoice Generator－Estimate App's advantage is review sentiment (100% vs 90%) and iOS requirement (14.5 vs 17.0). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Billdu sells 10 in-app purchases, starting at $7.99 per month and Invoice Generator－Estimate App sells 7 in-app purchases, starting at $5.99 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 4.6. That said, the two scores are not equally well evidenced: Billdu has 26K ratings behind it against 51, 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 Generator－Estimate App'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 Generator－Estimate App monthly. The most recent releases landed on November 9, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Billdu | Invoice Generator－Estimate App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (26K ratings)](https://appshunter.io/ios/app/billdu-invoice-estimate-maker/id527885754/reviews)** | [4.6 (51 ratings)](https://appshunter.io/ios/app/invoice-generatorestimate-app/id6448699760/reviews) |
| Number of ratings | **26K** | 51 |
| Positive reviews | 89.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#72** | — |
| Size | 207 MB | 45 MB |
| Requires iOS | 17.0 | **14.5** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BILLDU LTD](https://appshunter.io/developer/501173313) | [Oleksandr Sheremet](https://appshunter.io/developer/1555237471) |

## What reviewers say

### Billdu

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

**Currently charting:** #72 Top Grossing · Business (US App Store)

This app helps small businesses, contractors, and freelancers create professional invoices and estimates quickly. It offers features like online payment processing, expense tracking, and client management to streamline billing and improve cash flow.

**Highlights:** Customizable invoice templates, Instant estimates and invoices, Online payment acceptance, Expense tracking with receipt scanning, Client management, Multi-device sync, Inventory management

**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 Generator－Estimate App

[App page](https://appshunter.io/ios/app/invoice-generatorestimate-app/id6448699760)

Streamline your small business finances with an app that helps you create, send, and track professional invoices and estimates. Save time on administrative tasks and manage payments efficiently to make better business decisions.

**Highlights:** Create and send invoices quickly, Generate estimates and convert to invoices, Track payments and monitor balances, Generate custom business reports, Customize invoice templates, Save time on invoicing

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Maker 1 Week + trial | $5.99 | per 7 days |
| Invoice Maker 1 Week | $5.99 | per 7 days |
| Invoice Maker 1 Month | $9.99 | per month |
| Invoice Maker 1 Month | $9.99 | per month |
| Invoice Maker 1 Year | $59.99 | per year |
| Invoice Maker 1 Year | $99.99 | per year |
| Invoice Maker: Lifetime Access | $39.99 | one-time |


## Frequently asked questions

### Is Billdu free?

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

### Is Invoice Generator－Estimate App free?

Invoice Generator－Estimate App is free to download, with in-app purchases available.

### Which has better reviews, Billdu or Invoice Generator－Estimate App?

Billdu is rated higher. Billdu averages 4.8 out of 5 from 26K ratings, while Invoice Generator－Estimate App averages 4.6 from 51 ratings.

### Do Billdu or Invoice Generator－Estimate App have ads?

Neither Billdu nor Invoice Generator－Estimate App shows ads.

### Which is updated more often, Billdu or Invoice Generator－Estimate App?

Billdu ships an update every 2 weeks, and Invoice Generator－Estimate App monthly. Most recently, Billdu was updated on November 9, 2026 and Invoice Generator－Estimate App on November 3, 2026.

---

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