# DuoFeed vs Blue Note London

DuoFeed and Blue Note London are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | DuoFeed | Blue Note London |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 60 MB | 41 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [DuoFeed, Inc.](https://appshunter.io/developer/1818245764) | [PeopleVine](https://appshunter.io/developer/1548245069) |

## What reviewers say

### DuoFeed

[App page](https://appshunter.io/ios/app/duofeed/id6746736386)

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

**In-app purchases:** none


### Blue Note London

[App page](https://appshunter.io/ios/app/blue-note-london/id6807806465)

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

**In-app purchases:** none


## Frequently asked questions

### Is DuoFeed free?

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

### Is Blue Note London free?

Blue Note London is free to download, with no in-app purchases.

### Do DuoFeed or Blue Note London have ads?

Neither DuoFeed nor Blue Note London 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.*