# ODE vs Time Dilation Explorer Lab

The clearest difference is in-app purchases: ODE at none against Time Dilation Explorer Lab's 1. ODE also leads on iOS requirement (15.1 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Time Dilation Explorer Lab sells 1 one-off in-app purchase. ODE asks for nothing beyond the download.

## The numbers

| Metric | ODE | Time Dilation Explorer Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | — |
| Size | 41 MB | 16 MB |
| Requires iOS | **15.1** | 26.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### ODE

[App page](https://appshunter.io/ios/app/ode-solver-integrator/id1619296705)

**Features:** macOS Compatibility

**In-app purchases:** none


### Time Dilation Explorer Lab

[App page](https://appshunter.io/ios/app/time-dilation-explorer-lab/id6773199521)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Features | $2.99 | one-time |


## Frequently asked questions

### Is ODE free?

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

### Is Time Dilation Explorer Lab free?

Time Dilation Explorer Lab is free to download, with in-app purchases available.

### Do ODE or Time Dilation Explorer Lab have ads?

Both ODE and Time Dilation Explorer Lab show 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.*