Comparison

Due vs CoolFireSB

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

Head to head
About

Due

This app ensures you never forget tasks or appointments with persistent, effective reminders. It offers quick setup, natural language input, and powerful recurring options, all while prioritizing user privacy and accessibility across Apple devices.

Highlights
  • Persistent reminders with auto-snooze
  • Critical and prominent alerts
  • Natural language input for setting reminders
  • Powerful recurring reminder options
  • Countdown timers with auto-snooze
  • Apple Watch, Widget, and Shortcut support
  • iCloud and Dropbox sync
Features
Read full description

Due remembers all the things that you need so you don't have to. It reminds you again and again until you act, so it’s impossible to forget anything. And it's lightning-fast to set and postpone reminders, all thanks to a clever time picker and natural date parsing. KEY FEATURES 1. Persistent & Effective Auto Snooze* keeps nudging you about a missed reminder until you mark it done or reschedule it. Choose between every 1, 5, 10, 15, 30 and 60 minutes. 2. Impossible to Miss Some reminders can't wait. Use Critical Alerts to get through silent mode and Focus. Or use Prominent Alerts†, which ring like an alarm until you act. 3. Fast to Set, Fast to Postpone Keep the times you use most a tap away. Twelve Quick Access Times—all fully customizable—make setting or postponing reminders a piece of cake. 4. Just Type or Say It Type or say “Dentist 3p Thu” or “Meeting in 1h 20m”. Due spots the date, and one tap sets it. 5. Powerful Recurring Reminders From simple daily reminders to the every-3rd-Wednesday-of-the-month kind, Due keeps up with your routine. 6. Countdown Timers Not every reminder happens at a time of day. Some happen when the laundry cycle is done. That's what timers are for: precise to the second, with Auto Snooze too. Or just say “Hey Siri, start Laundry timer in Due”. 7. On Your Apple Watch Wear an Apple Watch? Due comes with you. Mark reminders done, snooze them, add new ones, start and stop timers—all from your wrist. It's a companion to Due on iPhone, so keep your iPhone nearby. 8. Widgets, Control Center & Shortcuts See what's coming up on your Home Screen and Lock Screen. Start timers and add reminders from Control Center, and automate the rest with Shortcuts. 9. Everywhere You Are Your reminders and timers on your iPhone, iPad, Apple Watch and Mac‡, all kept in sync with iCloud or Dropbox. 10. No Account, Completely Private There's no account to sign up for. We don't store, and we can't access, your reminders and timers. And you don't need internet to receive reminders. 11. Accessible to Everyone Due follows the text size you set on your device, on every screen, and offers full VoiceOver support. It's also localized in 17 languages. * By default, auto snooze repeats 5 times, and can be configured to repeat up to 10 times. Due can auto snooze any overdue items indefinitely when you launch Due or act on any of its notifications. † Prominent Alerts require iOS 26 or later. ‡ Sync on Mac requires Due for Mac (sold separately). WHAT'S THAT IN-APP PURCHASE ABOUT? When you purchase Due today, you will have access to every feature in the app today—no further purchase required. You will also get every new feature released within a year of your purchase. The optional Due Upgrade Pass subscription gives you access to new features released after that first year. And here's the deal: Every feature that you have unlocked will remain available to you, forever—even if you stop subscribing. Even without a subscription, you'll always receive bug-fix and compatibility updates for free. These updates add support for the latest iPhones, iPads and Apple Watches, and keep Due working well on the latest versions of iOS, iPadOS and watchOS. Due has a pretty good track record with that. To illustrate: If you bought Due back in 2010 for your iPhone 3G running iOS 4, that very same app in 2026 is now optimized for iPhone 18 Pro Max running iOS 27. It even works on devices that didn't exist back then, such as the iPhone Duo, the iPad Pro and the Apple Watch. TERMS & PRIVACY POLICY Our terms of use and privacy policy are available here: https://www.dueapp.com/terms.html COMPATIBILITY Due requires an iPhone or iPad running iOS 18 or later. The Apple Watch app requires watchOS 10 or later, and your paired iPhone nearby.

About

CoolFireSB

Control your CoolFire Bluetooth sweatband with this app. Set and manage vibration alarms, adjust strength, and sync settings directly to your device. Monitor vibrator activity and customize your experience.

Highlights
  • Connects with CoolFire sweatband
  • Fetches vibrator time
  • Set alarm times
  • Edit and toggle alarms
  • Adjust vibration strength
  • Sync settings to vibrator
Read full description

CoolFire Bluetooth Sweatband control app. The app connects with CoolFire sweatband. The app fetches the time of the vibrator. Alarm settings can be done on the App and then sync them to the vibrator. Users can easily edit, on/off alarms from the app as well as set the strength of vibration.

Screenshots

Due4 screens
CoolFireSB4 screens

Verdict

The call

The clearest difference is review sentiment: Due at 82% against CoolFireSB's 9%. Due also leads on rating (4.7 vs 2.7) and update cadence (every 2 weeks vs every 4 months). CoolFireSB's advantage is price (Free vs $7.99) and in-app purchases (none vs 4). On ads 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

CoolFireSB is free to download; Due costs $7.99 up front. Due sells 4 in-app purchases, starting at $4.99 per year. CoolFireSB asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Due holds the better App Store score, 4.7 against 2.7. That said, the two scores are not equally well evidenced: Due has 2.8K ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 82% of Due's written reviews are positive against 9% of CoolFireSB's.

UpkeepUpdate frequency

Due ships an update every 2 weeks, CoolFireSB every 4 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard9 real differences · 2 level
Due versus CoolFireSB: the parameters behind the verdict, then further details
ParameterDueCoolFireSB
Price$7.99Free — better
Rating4.7 (2.8K ratings) — better2.7 (10 ratings)
Positive reviews82.3% of reviews — better9.1% of reviews
Number of ratings2.8K — better10
Update frequencyEvery 2 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
Best chart rank#10 — better—
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPod
Requires iOS18.015.6 — better
Further details — not scored
Size82 MB55 MB
Age rating4+4+
DeveloperDue Apps LLPNew York Standard Watch Company, LLC

Customer experience

Due

All ratings2,836 ratings
Positive91.8%
Neutral2.4%
Negative5.8%
Written reviews795 reviews
Positive82.3%
Neutral5.9%
Negative11.8%

CoolFireSB

All ratings7 ratings
Positive57.1%
Neutral0.0%
Negative42.9%
Written reviews11 reviews
Positive9.1%
Neutral18.2%
Negative72.7%

Bugs and requests

Due

Reported bugs

2 issues
  • Reminders not triggering on Apple Watch
  • Completed reminders not clearing from all devices

Requested features

5 requests
  • Location-based reminders
  • Integration with calendar apps
  • Ability to set reminders for specific time ranges
  • Custom reminder sounds
  • Backup and restore functionality

CoolFireSB

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Due

Subscriptions1
  • Annual Upgrade Pass (Mobile)$4.991 Year
One-time3
  • Kind Tip$3.00
  • Generous Tip$5.00
  • Wonderful Tip$10.00
None

CoolFireSB

No in-app purchases

Questions

Is Due free?
Due costs $7.99, and also offers in-app purchases.
Is CoolFireSB free?
CoolFireSB is free to download, with no in-app purchases.
Which has better reviews, Due or CoolFireSB?
Due is rated higher. Due averages 4.7 out of 5 from 2.8K ratings, while CoolFireSB averages 2.7 from 10 ratings.
Do Due or CoolFireSB have ads?
Neither Due nor CoolFireSB shows ads.
Which is updated more often, Due or CoolFireSB?
Due ships an update every 2 weeks, and CoolFireSB every 4 months. Most recently, Due was updated on November 6, 2026 and CoolFireSB on November 3, 2026.

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