Countdown 321 vs CalculatorX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Countdown 321
Easily track important upcoming events and past milestones with a clean, minimalist interface. Get instant updates via home screen widgets and sync your data across devices with iCloud. Never forget a special day again.
- Countdown and count-up days
- Reminders and notifications
- Life calendar visualization
- Timeline view
- Minimalist design
- Home screen widgets
- iCloud sync
Read full descriptionHide full description
Do you find yourself like this? • An important day is coming, but you always forget the reminder? • Want to record life events, but get lost in scattered notes? • Looking forward to a trip, birthday, or anniversary, yet have no clear countdown? With Countdown 321, every special moment becomes crystal clear! ► 【Core Features】 • Countdown & Count-up Days: Track upcoming events or anniversaries with ease. • Reminders & Notifications: Never miss important moments again. • Life Calendar Visualization: See your remaining time in a clear and meaningful way. • Timeline View: All events are displayed on a timeline — past and future at a glance. • Minimalist Design: Clean and simple, only the dates that matter to you. • Home Screen Widgets: View your countdowns instantly without opening the app. • iCloud Sync: Access your events seamlessly across iPhone, iPad, and Mac. ► 【Perfect For】 • Birthdays, anniversaries, wedding anniversaries — keep warm reminders. • Exams, competitions, and study goals — stay prepared. • Trips, vacations, concerts — count down the exciting days. • New Year’s goals and past milestones — track your journey through time. • Life countdown — remind yourself to cherish every moment. ► 【Why Choose Countdown 321?】 Minimalist design, focused on what matters most. Accurate countdowns to track every milestone. Handy widgets for quick access right on your home screen. Reliable iCloud sync so your data is always safe. Let Countdown 321 be your companion in recording and witnessing every meaningful moment. Terms of Service: https://www.notion.so/timekeep/User-Agreement-Privacy-Policy-of-Countdown321-APP-2525858d478680319f6de841fdfb52f5 Privacy Policy: https://www.notion.so/timekeep/User-Agreement-Privacy-Policy-of-Countdown321-APP-2525858d478680319f6de841fdfb52f5 Follow us for tips: 小红书 @呱呱计数 | X @FrogCount Feedback & Support: 3578027083@qq.com
CalculatorX
A fast and customizable calculator app that allows users to personalize themes, button styles, and view calculation history in real-time. Offers various display options and sound feedback for an enhanced user experience.
- Real-time calculation history
- Customizable button colors and shapes
- Multiple themes and light/dark modes
- Decimal precision control
- Exportable calculation history
- Sound effects and voice feedback
Read full descriptionHide full description
Calculator X is a lightweight and fast calculator designed for efficient computing. Quickly change themes with simple swipe gestures, customize button colors, spacing, and shapes, and view your calculation history in real time. Features: Compact and fast – perform calculations instantly User-friendly gestures – swipe up or down to switch and customize calculator themes Customizable buttons – change button color, spacing, and shape Real-time calculation history – view your previous calculations instantly Export history – save and export your calculation history for easy reference Decimal precision control – choose the number of decimal places Thousands separator – view numbers clearly with thousands grouping Highlighted results – calculation results are displayed prominently Multiple themes – dozens of beautiful calculator themes to choose from Sound effects and voice feedback – support for button sounds and real voice responses Light and dark modes – switch easily to match your preference More features coming soon – we are constantly improving CalculatorX CalculatorX combines speed, customization, and fun to create the perfect calculation experience.
Screenshots
Verdict
The clearest difference is rating: Countdown 321 at 4.6 against CalculatorX's 4.0. Countdown 321 also leads on ratings volume (8 vs 2). CalculatorX's advantage is update cadence (every 6 days vs every 3 months) and monetization model (free vs free with in-app purchases). On price, review sentiment, ads and in-app purchases 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
Both are free to download. Countdown 321 sells 2 in-app purchases, starting at $1.99 per year and CalculatorX sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Countdown 321 holds the better App Store score, 4.6 against 4.0. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews point the same way: 95% of Countdown 321's written reviews are positive against 93% of CalculatorX's.
Countdown 321 ships an update every 3 months, CalculatorX every 6 days. The most recent releases landed on September 25, 2026 and September 20, 2026 respectively.
| Parameter | Countdown 321 | CalculatorX |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (8 ratings) — better | 4.0 (2 ratings) |
| Positive reviews | 95.5% of reviews — better | 92.9% of reviews |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 3 months | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 12 MB |
| Age rating | 4+ | 12+ |
| Developer | 帆 邱 | 学良 靳 |
Customer experience
Countdown 321
CalculatorX
In-app purchases
Countdown 321
- CountdownPro$1.991 Year
- Lifetime Pro$0.99
CalculatorX
- Lifetime Premium$2.99
