# InkMark vs Simplio Invoice Generator

The clearest difference is price: Simplio Invoice Generator at Free against InkMark's $0.99. Simplio Invoice Generator also leads on ads (none vs shown). InkMark's advantage is in-app purchases (none vs 3) and update cadence (every 9 days vs every 3 weeks). On device support there is nothing between them.

Simplio Invoice Generator is free to download; InkMark costs $0.99 up front. Simplio Invoice Generator sells 3 in-app purchases, starting at $2.99 per 7 days. InkMark asks for nothing beyond the download.

InkMark ships an update every 9 days, Simplio Invoice Generator every 3 weeks. The most recent releases landed on September 18, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | InkMark | Simplio Invoice Generator |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/simplio-invoice-generator/id6746767938/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 273 MB | 17 MB |
| Requires iOS | **15.5** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [梓萱 田](https://appshunter.io/developer/1734538828) | [Bahattin Duran](https://appshunter.io/developer/1677311418) |

## What reviewers say

### InkMark

[App page](https://appshunter.io/ios/app/inkmark-markdown-ai-notes/id6740519458)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simplio Invoice Generator

[App page](https://appshunter.io/ios/app/simplio-invoice-generator/id6746767938)

Quickly generate professional PDF invoices with customizable templates, branding, and payment details. Save client information for reuse and share invoices directly from your device. Offers offline functionality and a privacy-focused approach.

**Highlights:** Professional invoice templates, Customizable branding and contact details, Line item details with tax and discounts, Multi-currency and payment term support, Client directory for reuse, Offline PDF export and sharing, Recurring invoices and status tracking (Pro)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $2.99 | per 7 days |
| Pro Monthly | $6.99 | per month |
| Pro Annual | $29.99 | per year |


## Frequently asked questions

### Is InkMark free?

InkMark costs $0.99, with no in-app purchases.

### Is Simplio Invoice Generator free?

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

### Do InkMark or Simplio Invoice Generator have ads?

InkMark shows ads; Simplio Invoice Generator does not.

### Which is updated more often, InkMark or Simplio Invoice Generator?

InkMark ships an update every 9 days, and Simplio Invoice Generator every 3 weeks. Most recently, InkMark was updated on September 18, 2026 and Simplio Invoice Generator on September 8, 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.*