# Invoice Simple vs DK

The clearest difference is in-app purchases: DK at none against Invoice Simple's 10. DK also leads on iOS requirement (13.0 vs 16.4). Invoice Simple's advantage is ratings volume (123K vs 2) and chart position (#9 vs unranked). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Invoice Simple sells 9 in-app purchases, starting at $6.99 per month. DK asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Invoice Simple against 5.0 for DK. That said, the two scores are not equally well evidenced: Invoice Simple has 123K ratings behind it against 2, so its average is the more settled of the two.

Invoice Simple ships an update every 2 weeks, DK every 9 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Invoice Simple | DK |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (123K ratings)](https://appshunter.io/ios/app/invoice-simple-invoice-maker/id694831622/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/dk-elite-pro/id6785590729/reviews)** |
| Number of ratings | **123K** | 2 |
| Positive reviews | 63.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#9** | — |
| Size | 221 MB | 5 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zenvoice Inc.](https://appshunter.io/developer/990870994) | [Robert Williams](https://appshunter.io/developer/912248588) |

## What reviewers say

### 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 app helps individuals and growing businesses get organized, look professional, and get paid faster by accepting online payments.

**Highlights:** Create invoices, estimates, and receipts, Accept online payments, Customize invoices with logo and details, Organize client and product information, Send via email, text, or WhatsApp, Download as PDF, Get payment and opening alerts

**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


### DK

[App page](https://appshunter.io/ios/app/dk-elite-pro/id6785590729)

Manage all aspects of your cleaning business with this comprehensive platform. Schedule jobs, send estimates, process payments, run payroll, and track mileage. It connects admin, staff, and clients in a real-time system.

**Highlights:** Job scheduling, Estimate creation and online signing, Client invoicing and payment processing, Payroll and time clock, Mileage tracking, Route planning, Client management

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

**In-app purchases:** none


## Frequently asked questions

### Is Invoice Simple free?

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

### Is DK free?

DK is free to download, with no in-app purchases.

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

DK is rated higher. Invoice Simple averages 4.9 out of 5 from 123K ratings, while DK averages 5.0 from 2 ratings.

### Do Invoice Simple or DK have ads?

Neither Invoice Simple nor DK shows ads.

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

Invoice Simple ships an update every 2 weeks, and DK every 9 days. Most recently, Invoice Simple was updated on November 9, 2026 and DK on October 31, 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.*