# Science Experiments by Dencity vs OPENskill

The clearest difference is in-app purchases: OPENskill at none against Science Experiments by Dencity's 27. OPENskill also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Science Experiments by Dencity sells 27 in-app purchases, starting at $0.99 per month. OPENskill asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Science Experiments by Dencity | OPENskill |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 642 MB | 33 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Techventions](https://appshunter.io/developer/1766707643) | [SiamSquared Technologies (Thailand) Co., Ltd.](https://appshunter.io/developer/333207356) |

## What reviewers say

### Science Experiments by Dencity

[App page](https://appshunter.io/ios/app/science-experiments-by-dencity/id6670542048)

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

**In-app purchases (27)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Class 10 Experiments | $0.99 | per month |
| Class 11 Experiments | $0.99 | per month |
| Class 12 Experiments | $0.99 | per month |
| Class 6 Experiments | $0.99 | per month |
| Class 7 Experiments | $0.99 | per month |
| Class 8 Experiments | $0.99 | per month |
| Class 9 Experiments | $0.99 | per month |
| Class 12 Experiments | $0.99 | per month |
| Class 9 Experiments | $0.99 | per month |
| Class 11 Experiments | $0.99 | per month |
| Class 10 Experiments | $0.99 | per month |
| Class 7 Experiments | $1.99 | per month |
| Class 6 Experiments | $1.99 | per month |
| Class 12 Experiments | $1.99 | per month |
| Class 10 Experiments | $1.99 | per month |
| Class 11 Experiments | $1.99 | per month |
| Class 9 Experiments | $1.99 | per month |
| Class 6 | $4.99 | per month |
| Class 8 Experiments | $4.99 | per month |
| Class 8 Experiments | $9.99 | per month |
| Class 7 Experiments | $9.99 | per month |
| Class 8 Experiments | $3.99 | one-time |
| Class 9 Experiments | $3.99 | one-time |
| Class 7 Experiments | $4.99 | one-time |
| Class 7 Experiments | $8.99 | one-time |
| Class 8 Experiments | $8.99 | one-time |
| Class 9 Experiments | $8.99 | one-time |


### OPENskill

[App page](https://appshunter.io/ios/app/openskill/id6752234032)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Science Experiments by Dencity free?

Science Experiments by Dencity is free to download, with in-app purchases available.

### Is OPENskill free?

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

### Do Science Experiments by Dencity or OPENskill have ads?

Science Experiments by Dencity shows ads; OPENskill does not.

### Which is updated more often, Science Experiments by Dencity or OPENskill?

Science Experiments by Dencity ships an update every 3 weeks, and OPENskill every 3 weeks. Most recently, Science Experiments by Dencity was updated on September 16, 2026 and OPENskill on September 9, 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.*