# primr vs Mail Sentinel

The clearest difference is iOS requirement: primr at 10.0 against Mail Sentinel's 17.0. On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | primr | Mail Sentinel |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/primr/id1352122058/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free | — |
| Size | 39 MB | 4 MB |
| Requires iOS | **10.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Daily Prompt Ltd](https://appshunter.io/developer/1352122057) | [Sky Benson](https://appshunter.io/developer/1839805807) |

## What reviewers say

### primr

[App page](https://appshunter.io/ios/app/primr/id1352122058)

Enhance your focus and productivity with binaural beats and guided meditation. Track your focus improvement over time and unlock new sound packs designed for creativity and productivity.

**Highlights:** Binaural beats for focus, Guided meditation sessions, Focus rating after each session, Track focus improvement over time, Future sound packs for creativity

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

**In-app purchases:** none


### Mail Sentinel

[App page](https://appshunter.io/ios/app/mail-sentinel/id6757452962)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is primr free?

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

### Is Mail Sentinel free?

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

### Do primr or Mail Sentinel have ads?

Neither primr nor Mail Sentinel 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.*