# Due vs CoolFireSB

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.

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.

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.

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.

## The numbers

| Metric | Due | CoolFireSB |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.7 (2.8K ratings)](https://appshunter.io/ios/app/due-reminders-and-timers/id390017969/reviews)** | [2.7 (10 ratings)](https://appshunter.io/ios/app/coolfiresb/id1606792875/reviews) |
| Number of ratings | **2.8K** | 10 |
| Positive reviews | **82.3% of reviews** | 9.1% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#10** | — |
| Size | 82 MB | 55 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Due Apps LLP](https://appshunter.io/developer/387681526) | [New York Standard Watch Company, LLC](https://appshunter.io/developer/828885617) |

## What reviewers say

### Due

[App page](https://appshunter.io/ios/app/due-reminders-and-timers/id390017969)

**Currently charting:** #10 Top Paid · Productivity, #78 Top Paid (US App Store)

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:** Family Sharing, Siri integration, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Upgrade Pass (Mobile) | $4.99 | per year |
| Kind Tip | $3.00 | one-time |
| Generous Tip | $5.00 | one-time |
| Wonderful Tip | $10.00 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Quick to set reminders
- 📆 Customizable repeat options
- ⏰ Persistent reminders until completed
- 🔔 Variety of alert sounds

**What reviewers complain about**

- 🐛 Occasional syncing issues
- 🔇 Notification volume could be louder
- 📂 Lack of folder/category organization
- 🕰️ Limited snooze time options

**Reported bugs**

- Reminders not triggering on Apple Watch
- Completed reminders not clearing from all devices

**Requested features**

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


### CoolFireSB

[App page](https://appshunter.io/ios/app/coolfiresb/id1606792875)

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

**In-app purchases:** none


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