# Data Performance Days vs Ellern

The clearest difference is update cadence: Ellern at every 5 weeks against Data Performance Days's every 11 months. Data Performance Days's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Data Performance Days ships an update every 11 months, Ellern every 5 weeks. The most recent releases landed on October 3, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Data Performance Days | Ellern |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 5 weeks** |
| Size | 72 MB | 104 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Infomotion GmbH](https://appshunter.io/developer/1775952109) | [Verbandsgemeinde Simmern-Rheinboellen](https://appshunter.io/developer/1716680157) |

## What reviewers say

### Data Performance Days

[App page](https://appshunter.io/ios/app/data-performance-days/id6737349599)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ellern

[App page](https://appshunter.io/ios/app/ellern/id6741430745)

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

**In-app purchases:** none


## Frequently asked questions

### Is Data Performance Days free?

Data Performance Days is free to download, with no in-app purchases.

### Is Ellern free?

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

### Do Data Performance Days or Ellern have ads?

Neither Data Performance Days nor Ellern shows ads.

### Which is updated more often, Data Performance Days or Ellern?

Data Performance Days ships an update every 11 months, and Ellern every 5 weeks. Most recently, Data Performance Days was updated on October 3, 2026 and Ellern on October 9, 2026.

---

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