# 52/17 vs RX Mobile Notify

The clearest difference is in-app purchases: RX Mobile Notify at none against 52/17's 1. 52/17's advantage is device support (3 vs 1) and iOS requirement (13 vs 16.0). On price, update cadence and ads there is nothing between them.

Both are free to download. 52/17 sells 1 one-off in-app purchase. RX Mobile Notify asks for nothing beyond the download.

52/17 ships an update every 6 weeks, RX Mobile Notify every 2 months. The most recent releases landed on June 5, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | 52/17 | RX Mobile Notify |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 43 MB |
| Requires iOS | **13** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Vladislav Khaykov](https://appshunter.io/developer/1525508564) | [QED Advanced Systems Ltd](https://appshunter.io/developer/1002312784) |

## What reviewers say

### 52/17

[App page](https://appshunter.io/ios/app/5217/id1604356537)

This app uses the 52-minute work, 17-minute break method to enhance focus and productivity. It's designed to help users achieve deep concentration while ensuring adequate rest periods for better performance.

**Highlights:** 52-minute focus intervals, 17-minute rest periods, Deep focus enhancement, Mindful rest cycles, Balanced productivity

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Colors | $0.99 | one-time |


### RX Mobile Notify

[App page](https://appshunter.io/ios/app/rx-mobile-notify/id6736910067)

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

**In-app purchases:** none


## Frequently asked questions

### Is 52/17 free?

52/17 is free to download, with in-app purchases available.

### Is RX Mobile Notify free?

RX Mobile Notify is free to download, with no in-app purchases.

### Do 52/17 or RX Mobile Notify have ads?

Neither 52/17 nor RX Mobile Notify shows ads.

### Which is updated more often, 52/17 or RX Mobile Notify?

52/17 ships an update every 6 weeks, and RX Mobile Notify every 2 months. Most recently, 52/17 was updated on June 5, 2026 and RX Mobile Notify on September 10, 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.*