# Mark6 Reminder vs HK MarkSix Guide

The clearest difference is ads: HK MarkSix Guide at none against Mark6 Reminder's shown. Mark6 Reminder's advantage is update cadence (every 2 months vs every 6 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Mark6 Reminder ships an update every 2 months, HK MarkSix Guide every 6 months. The most recent releases landed on September 23, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Mark6 Reminder | HK MarkSix Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 6 months |
| Size | 37 MB | 33 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Heung Kai Chan](https://appshunter.io/developer/1569414929) | [YIU WING NG](https://appshunter.io/developer/1454513690) |

## What reviewers say

### Mark6 Reminder

[App page](https://appshunter.io/ios/app/mark6-reminder/id6744552226)

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

**In-app purchases:** none


### HK MarkSix Guide

[App page](https://appshunter.io/ios/app/hk-marksix-guide/id6746738751)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mark6 Reminder free?

Mark6 Reminder is free to download, with no in-app purchases.

### Is HK MarkSix Guide free?

HK MarkSix Guide is free to download, with no in-app purchases.

### Do Mark6 Reminder or HK MarkSix Guide have ads?

Mark6 Reminder shows ads; HK MarkSix Guide does not.

### Which is updated more often, Mark6 Reminder or HK MarkSix Guide?

Mark6 Reminder ships an update every 2 months, and HK MarkSix Guide every 6 months. Most recently, Mark6 Reminder was updated on September 23, 2026 and HK MarkSix Guide on September 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*