# ULM exams & tests vs ViscousJoukowski

The clearest difference is price: ViscousJoukowski at Free against ULM exams & tests's $9.99. ViscousJoukowski also leads on in-app purchases (none vs 10). ULM exams & tests's advantage is device support (3 vs 1) and iOS requirement (15.4 vs 17.0). On ads there is nothing between them.

ViscousJoukowski is free to download; ULM exams & tests costs $9.99 up front. ULM exams & tests sells 10 one-off in-app purchases. ViscousJoukowski asks for nothing beyond the download.

## The numbers

| Metric | ULM exams & tests | ViscousJoukowski |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Size | 13 MB | 16 MB |
| Requires iOS | **15.4** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Entertastic](https://appshunter.io/developer/1072443162) | [ManneTroll Solutions](https://appshunter.io/developer/313743954) |

## What reviewers say

### ULM exams & tests

[App page](https://appshunter.io/ios/app/ulm-exams-and-tests/id6447483442)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2 days trial | $1.99 | one-time |
| 1 month | $4.99 | one-time |
| 3 months | $9.99 | one-time |
| $15 credit | $14.99 | one-time |
| 6 months | $14.99 | one-time |
| 1 year | $24.99 | one-time |
| $30 credit | $29.99 | one-time |
| $50 credit | $49.99 | one-time |
| Lifetime | $49.99 | one-time |
| $100 credit | $99.99 | one-time |


### ViscousJoukowski

[App page](https://appshunter.io/ios/app/viscousjoukowski/id6806776003)

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

**In-app purchases:** none


## Frequently asked questions

### Is ULM exams & tests free?

ULM exams & tests costs $9.99, and also offers in-app purchases.

### Is ViscousJoukowski free?

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

### Do ULM exams & tests or ViscousJoukowski have ads?

Neither ULM exams & tests nor ViscousJoukowski 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.*