# sprkd vs Noesis

The clearest difference is in-app purchases: sprkd at none against Noesis's 2. sprkd also leads on iOS requirement (13.0 vs 16.4). On price, ads and device support there is nothing between them.

Both are free to download. Noesis sells 2 in-app purchases, starting at $12.99 per month. sprkd asks for nothing beyond the download.

## The numbers

| Metric | sprkd | Noesis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 10 days |
| Size | 6 MB | 111 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Michael Davis](https://appshunter.io/developer/1895669223) | [Abhishek Chauhan](https://appshunter.io/developer/1886624177) |

## What reviewers say

### sprkd

[App page](https://appshunter.io/ios/app/sprkd/id6788555549)

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

**In-app purchases:** none


### Noesis

[App page](https://appshunter.io/ios/app/noesis-math-physics-finance/id6804661027)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Noesis Monthly | $12.99 | per month |
| Noesis Yearly | $34.99 | per year |


## Frequently asked questions

### Is sprkd free?

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

### Is Noesis free?

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

### Do sprkd or Noesis have ads?

Neither sprkd nor Noesis 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.*