# Jake for stratigraphy vs Dirac equation

The clearest difference is iOS requirement: Dirac equation at 17 against Jake for stratigraphy's 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.

## The numbers

| Metric | Jake for stratigraphy | Dirac equation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | — |
| Size | 1 MB | 5 MB |
| Requires iOS | 26.0 | **17** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Hunt Mountain Software](https://appshunter.io/developer/328710008) | [Sungjun Kim](https://appshunter.io/developer/1602461985) |

## What reviewers say

### Jake for stratigraphy

[App page](https://appshunter.io/ios/app/jake-for-stratigraphy/id1486090789)

**In-app purchases:** none


### Dirac equation

[App page](https://appshunter.io/ios/app/dirac-equation/id6739155551)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Jake for stratigraphy free?

Jake for stratigraphy is free to download, with no in-app purchases.

### Is Dirac equation free?

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

### Do Jake for stratigraphy or Dirac equation have ads?

Neither Jake for stratigraphy nor Dirac equation shows ads.

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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.*