# Mark6 Reminder vs 49 Tracker The clearest difference is update cadence: 49 Tracker at every 2 days against Mark6 Reminder's every 6 weeks. 49 Tracker also leads on iOS requirement (13.0 vs 15.6). 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. Mark6 Reminder ships an update every 6 weeks, 49 Tracker every 2 days. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively. ## The numbers | Metric | Mark6 Reminder | 49 Tracker | | --- | --- | --- | | Price | Free | Free | | In-app purchases | No | No | | Ads | Yes | Yes | | Update frequency | Every 6 weeks | **Every 2 days** | | Size | 37 MB | 29 MB | | Requires iOS | 15.6 | **13.0** | | Devices | iPhone, iPod | iPhone, iPod | | Age rating | 17+ | 17+ | | Developer | [Heung Kai Chan](https://appshunter.io/developer/1569414929) | [明玲 徐](https://appshunter.io/developer/1887198901) | ## 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 ### 49 Tracker [App page](https://appshunter.io/ios/app/49-tracker/id6761814108) **Features:** macOS Compatibility, Vision Pro support **In-app purchases:** none ## Frequently asked questions ### Is Mark6 Reminder free? Mark6 Reminder is free to download, with no in-app purchases. ### Is 49 Tracker free? 49 Tracker is free to download, with no in-app purchases. ### Do Mark6 Reminder or 49 Tracker have ads? Both Mark6 Reminder and 49 Tracker show ads. ### Which is updated more often, Mark6 Reminder or 49 Tracker? Mark6 Reminder ships an update every 6 weeks, and 49 Tracker every 2 days. Most recently, Mark6 Reminder was updated on October 9, 2026 and 49 Tracker on October 8, 2026. --- *Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*