Comparison

Systems vs ReminderOS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Systems

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
Read full description

Systems – Never Forget a Step Again Most mistakes do not happen because you do not know what to do. They happen because one small step gets missed. You leave for work and forget your charger. You hand over a rental property and forget to photograph the utility meters. You prepare an Airbnb and forget to restock the coffee. You launch a website and forget to test the contact form. You deliver a client project and forget to send the invoice. Systems helps you capture repeatable workflows so nothing gets overlooked. Instead of relying on memory, sticky notes, scattered documents, or rebuilding the same checklist over and over, create a System once and run it whenever you need it. A System can be anything: • A morning routine • A travel packing list • A client onboarding process • An Airbnb turnover workflow • A website launch checklist • A restaurant opening procedure • A monthly bookkeeping process Why Systems Works To-do lists are for one-time tasks. Systems are for things you do repeatedly. When a process is written down, you do not have to remember every step. Just follow the System and focus on getting it done. How It Works 1. Create a System from a repeatable process 2. Break it into clear, actionable steps 3. Run it whenever you need it 4. Check off progress as you go 5. Improve your workflow over time Features • Reusable checklist Systems • Daily progress tracking • Calendar and timeline views • Categories, favorites, and search • Shareable links and deep links • Import and export support • Calendar integration • iCloud Sync (Beta) Built for People Who Think in Systems Pilots use checklists. Restaurants use opening and closing procedures. Businesses use standard operating procedures. Systems brings the same clarity and consistency to everyday life and work. Perfect For • Small business owners • Freelancers and consultants • Property managers and Airbnb hosts • Creators and professionals • Anyone who wants less mental load and fewer mistakes Subscription Required Systems is a subscription-based app. Start a renewable subscription with a 3-day free trial to explore all features before you're charged. Choose the plan that works best for you and cancel anytime during the trial if it's not the right fit. Start building your personal library of Systems today and stop relying on memory for the things that matter. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ReminderOS

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
Read full description

ReminderOS - Reminders that keep up with you. Create simple reminders or ultra-specific repeat schedules with ReminderOS. Sync seamlessly across your devices, snooze or reschedule from notifications, and stay on top of deadlines, habits and routines - all while keeping your data private. No clutter. No tracking. Just reminders that work. Recurring reminders, your way ReminderOS gives you full control over how reminders repeat. Set flexible schedules like: • Every 3 days • Every 2 weeks • Specific weekdays • Custom recurring intervals If you can describe it, ReminderOS can schedule it. Snooze without opening the app Handle reminders instantly from your notifications. • Snooze reminders • Reschedule tasks • Mark reminders as complete Stay focused without switching apps. Sync across your devices Your reminders stay updated across all your devices using iCloud. • No accounts required • No tracking • Your data stays yours Privacy-first by design. Built for busy and ADHD minds ReminderOS helps reduce overwhelm with clean design, flexible scheduling and persistent reminders that actually stick. Use ReminderOS for: • Work deadlines • Medication reminders • Study schedules • Habits and routines • Daily life admin Simple when you need it. Powerful when it matters. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula

Screenshots

Systems4 screens
ReminderOS4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Systems versus ReminderOS: the parameters behind the verdict, then further details
ParameterSystemsReminderOS
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 4 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhoneiPhone, iPad — better
Requires iOS26.0 — better26.2
Further details — not scored
Size70 MB26 MB
Age rating4+4+
DeveloperAdam KovacsPaul Waweru

Customer experience

Systems

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

ReminderOS

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Systems

Subscriptions3
  • Systems Pro Weekly3 Days trial$3.997 Days
  • Systems Pro (1 Month)3 Days trial$4.991 Month
  • Systems Pro (1 Year)7 Days trial$19.991 Year
One-time1
  • Systems Pro (Lifetime)$49.99
3 purchases

ReminderOS

Subscriptions2
  • ReminderOS Pro1 Month trial$2.997 Days
  • ReminderOS Pro1 Month trial$39.991 Year
One-time1
  • ReminderOS Lifetime$49.99

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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