# Mark vs Shift.IX

The clearest difference is in-app purchases: Mark at none against Shift.IX's 1. Shift.IX's advantage is update cadence (every 3 weeks vs every 6 weeks) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Shift.IX sells 1 in-app purchase, starting at $9.99 per year. Mark asks for nothing beyond the download.

Mark ships an update every 6 weeks, Shift.IX every 3 weeks. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Mark | Shift.IX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 329 MB | 73 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mark-E AG](https://appshunter.io/developer/1437132173) | [Murat Cucenoglu](https://appshunter.io/developer/1890174600) |

## What reviewers say

### Mark

[App page](https://appshunter.io/ios/app/mark-e/id1613757282)

Manage your energy and water supply contracts easily from your smartphone, whether at home or on the go. Submit meter readings and adjust advance payments securely and conveniently. Stay updated with the latest news and offers.

**Highlights:** Contract management, Submit meter readings, Adjust advance payments, View news and offers, Secure and convenient

**Features:** Apple Wallet

**In-app purchases:** none


### Shift.IX

[App page](https://appshunter.io/ios/app/shiftix/id6761535309)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShiftIX Premium Annual | $9.99 | per year |


## Frequently asked questions

### Is Mark free?

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

### Is Shift.IX free?

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

### Do Mark or Shift.IX have ads?

Neither Mark nor Shift.IX shows ads.

### Which is updated more often, Mark or Shift.IX?

Mark ships an update every 6 weeks, and Shift.IX every 3 weeks. Most recently, Mark was updated on November 3, 2026 and Shift.IX on October 28, 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.*