# concepts. vs Aprecis

The clearest difference is in-app purchases: Aprecis at none against concepts.'s 2. concepts.'s advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price and ads there is nothing between them.

Both are free to download. concepts. sells 2 in-app purchases, starting at $0.99 per 7 days. Aprecis asks for nothing beyond the download.

## The numbers

| Metric | concepts. | Aprecis |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Size | 55 MB | 8 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Tsimafei Launik](https://appshunter.io/developer/1801805860) | [POH JUN HENG JUSTIN](https://appshunter.io/developer/1896336666) |

## What reviewers say

### concepts.

[App page](https://appshunter.io/ios/app/concepts/id6758052273)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access Weekly | $0.99 | per 7 days |
| Full Access Yearly | $29.99 | per year |


### Aprecis

[App page](https://appshunter.io/ios/app/aprecis-read-ai-papers/id6766909567)

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

**In-app purchases:** none


## Frequently asked questions

### Is concepts. free?

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

### Is Aprecis free?

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

### Do concepts. or Aprecis have ads?

Neither concepts. nor Aprecis 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.*