# eigenCalc vs Dandelion

The clearest difference is update cadence: Dandelion at every 4 days against eigenCalc's monthly. eigenCalc's advantage is iOS requirement (15.5 vs 26.0). 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.

eigenCalc ships an update monthly, Dandelion every 4 days. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | eigenCalc | Dandelion |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Size | 2 MB | 8 MB |
| Requires iOS | **15.5** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Mac |
| Age rating | 17+ | 4+ |
| Developer | [Luis Acevedo-Arreguin](https://appshunter.io/developer/1642773653) | [Stefan Meingast](https://appshunter.io/developer/6777662339) |

## What reviewers say

### eigenCalc

[App page](https://appshunter.io/ios/app/eigencalc/id6503222785)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dandelion

[App page](https://appshunter.io/ios/app/dandelion-star-clusters/id6787721036)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is eigenCalc free?

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

### Is Dandelion free?

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

### Do eigenCalc or Dandelion have ads?

Neither eigenCalc nor Dandelion shows ads.

### Which is updated more often, eigenCalc or Dandelion?

eigenCalc ships an update monthly, and Dandelion every 4 days. Most recently, eigenCalc was updated on October 25, 2026 and Dandelion on October 6, 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.*