# ODE vs NumTest

The clearest difference is in-app purchases: ODE at none against NumTest's 1. ODE also leads on update cadence (every 5 weeks vs every 11 months) and iOS requirement (15.1 vs 18.6). NumTest's advantage is ads (none vs shown). On price and device support there is nothing between them.

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

ODE ships an update every 5 weeks, NumTest every 11 months. The most recent releases landed on September 18, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | ODE | NumTest |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 11 months |
| Size | 41 MB | 4 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Om Prakash Chapagain](https://appshunter.io/developer/1618620262) | [Daniel Hadush](https://appshunter.io/developer/1769824626) |

## What reviewers say

### ODE

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

**Features:** macOS Compatibility

**In-app purchases:** none


### NumTest

[App page](https://appshunter.io/ios/app/numtest/id6705136328)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| buyfile | $0.99 | one-time |


## Frequently asked questions

### Is ODE free?

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

### Is NumTest free?

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

### Do ODE or NumTest have ads?

ODE shows ads; NumTest does not.

### Which is updated more often, ODE or NumTest?

ODE ships an update every 5 weeks, and NumTest every 11 months. Most recently, ODE was updated on September 18, 2026 and NumTest on October 1, 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.*