# Systems vs ReminderOS

The clearest difference is monetization model: ReminderOS at freemium against Systems's subscription. ReminderOS also leads on update cadence (every 4 days vs every 4 weeks). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Systems sells 4 in-app purchases, starting at $3.99 per 7 days and ReminderOS sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Systems ships an update every 4 weeks, ReminderOS every 4 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Systems | ReminderOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/reminderos-smart-reminders/id6758914560/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 4 days** |
| Monetization | Subscription | **Freemium** |
| Size | 70 MB | 26 MB |
| Requires iOS | **26.0** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Adam Kovacs](https://appshunter.io/developer/1814096456) | [Paul Waweru](https://appshunter.io/developer/1715153836) |

## What reviewers say

### Systems

[App page](https://appshunter.io/ios/app/systems-checklists/id6746172413)

This app helps you create and follow repeatable workflows to avoid missing crucial steps. Capture any process, from morning routines to business procedures, and check off progress as you go. Reduce mental load and minimize errors by relying on structured systems instead of memory.

**Highlights:** Reusable checklist systems, Daily progress tracking, Calendar and timeline views, Categories, favorites, and search, Shareable links, Import and export support, Calendar integration, iCloud Sync (Beta)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Systems Pro Weekly | $3.99 | per 7 days |
| Systems Pro (1 Month) | $4.99 | per month |
| Systems Pro (1 Year) | $19.99 | per year |
| Systems Pro (Lifetime) | $49.99 | one-time |


### ReminderOS

[App page](https://appshunter.io/ios/app/reminderos-smart-reminders/id6758914560)

Create highly customizable reminders with flexible repeat schedules and instant notification actions. Sync across devices without accounts, prioritizing user privacy. Designed for busy individuals and those with ADHD to manage tasks and routines effectively.

**Highlights:** Customizable recurring reminders, Snooze and reschedule from notifications, Seamless iCloud sync across devices, Privacy-first design, no tracking, Built for busy and ADHD minds, Flexible scheduling options

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ReminderOS Pro | $2.99 | per 7 days |
| ReminderOS Pro | $39.99 | per year |
| ReminderOS Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Systems free?

Systems is free to download, with in-app purchases available.

### Is ReminderOS free?

ReminderOS is free to download, with in-app purchases available.

### Do Systems or ReminderOS have ads?

Neither Systems nor ReminderOS shows ads.

### Which is updated more often, Systems or ReminderOS?

Systems ships an update every 4 weeks, and ReminderOS every 4 days. Most recently, Systems was updated on October 30, 2026 and ReminderOS on October 31, 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.*