Countdown vs Coo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Countdown
Visually track upcoming events with a unique battery-style progress indicator. Offers customizable widgets, smart reminders, and instant calendar import. Designed for privacy and offline use, it helps you stay motivated by seeing time fill up towards your goals.
- Battery-style progress visualization
- Multiple home screen widget styles
- Lock screen widget support
- Customizable smart reminders
- Instant calendar event import
- Private and offline functionality
- Color and icon customization
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Time Fill is a simple countdown that helps you see time at a glance, trips, birthdays, deadlines, anything. Lock screen widget, repeat reminders, color themes, and intuitive filters. Private by design. BATTERY-STYLE PROGRESS Watch time fill visually as you get closer to your goal. The unique battery-fill design makes tracking progress intuitive and satisfying, like watching your phone charge, but for life's important moments. YEAR & MONTH OVERVIEW Toggle between yearly and monthly views to see exactly how much time has passed. Perfect for understanding progress at a glance, whether it's a 30-day challenge or a year-long journey. 6 WIDGET STYLES Choose from six distinct widget designs for your home screen: • Minimal — clean, focused countdown • Modular — detailed with progress bar • Dot Ring — circular dot-based countdown in small, medium, and large • Year Progress — see your year unfold day by day • Month Progress — track the current month at a glance • Lock Screen — always visible on your lock screen Widgets automatically show your next upcoming event. No configuration needed. SMART REMINDERS Get notified when it matters most: • Custom notification times you control • 1 month before milestone • 1 week before reminder • 1 day before alert • Morning of the big day Set your preferred notification times, whether you're a morning person or night owl. INSTANT CALENDAR IMPORT Already tracking events in your calendar? Import them instantly with a single tap. No retyping, no hassle. BEAUTIFUL & INTUITIVE • Clean, modern design that feels native to iOS • Smooth animations that bring your countdowns to life • Choose from dozens of icons and colors • Sort by date, name, or progress • Timeline view for visual journey mapping 100% PRIVATE & OFFLINE Your data never leaves your device. No cloud sync, no tracking, no servers, no data collection. Time Fill respects your privacy completely. Perfect for tracking: • Vacations and travel plans • Birthdays and anniversaries • Wedding dates • Graduation ceremonies • Project deadlines • Fitness goals and challenges • Book releases and movie premieres • Retirement countdowns • Baby due dates • Life milestones WHY TIME FILL? Most countdown apps show time draining away. TimeFill flips the script, watch time fill up toward your goal. It's a more positive, motivating way to track the moments that matter. The battery metaphor makes progress tangible. At a glance, you know exactly where you stand. 25% full? Just getting started. 75% full? Almost there! It transforms abstract time into something you can see and feel. BUILT WITH CARE TimeFill is crafted by an indie developer who believes great apps should respect your privacy, work offline, and never cost you more than once. No business model based on your data. No pressure to upgrade. Just a beautiful tool that does one thing exceptionally well. GET STARTED IN SECONDS 1. Add your first countdown 2. Pick an icon and color 3. Watch time start filling That's it. No account required, no tutorials needed, no complexity. Download Time Fill and make time beautiful.
Coo
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Keeping a relationship private at work—or simply not ready to make it public? Share a quiet conversation that stays between you and someone you trust. Coo is not another messenger. Keep using the messaging apps you already know. Coo encrypts your private message on your device and places it inside text that looks like an ordinary sentence. Your connection opens that sentence in Coo to read the original message. How Coo works 1. Write a private message in Coo. 2. Copy the ordinary-looking sentence Coo creates. 3. Paste and send it in your usual messenger. 4. Your connection opens it in Coo. Privacy by design • AES-256-GCM encryption runs on your device. • Connection keys stay in each device's secure storage. • Text secrets do not pass through Coo servers. Photos are encrypted on your device and stored temporarily as unreadable ciphertext (deleted on opening for one-time photos; up to 30 days). Even Coo cannot see their contents. The app keeps no conversation history. • Biometric or device lock and screen-capture protection help guard the screen. • By default, an envelope opened once cannot be opened again on that device. Use Coo for a confession, a surprise, or an address or account number you would rather not leave visible in a chat. Free and subscription The free plan includes one connection and 10 starting stamps. When your balance is zero, one stamp is added at midnight. With a zero balance, you can also earn one stamp by finishing a rewarded ad. Each envelope uses one stamp. Opening received messages and photos is always free. A subscription adds multiple connections, photo sending, unlimited secret creation and sending, alternate app icons, and an ad-free experience. Encryption and privacy protections are the same on both plans. [Subscription] Monthly and yearly subscriptions are available. The price shown in the app is localized for your App Store region. Payment is charged to your Apple Account. The subscription renews automatically unless canceled at least 24 hours before the current period ends. You can manage or cancel it in your App Store account settings. Privacy Policy: https://sendcoo.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Countdown at none against Coo's shown. Coo's advantage is update cadence (every 5 days vs monthly). On price, in-app purchases, device support and iOS requirement 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 sells 5 one-off in-app purchases and Coo sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Countdown ships an update monthly, Coo every 5 days. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | Countdown | Coo |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (16 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 16 — better | — |
| Update frequency | Monthly | Every 5 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Oluwadunsin Agbolabori | yunchan cho |
In-app purchases
Countdown
- Small Tip$0.99
- Medium Tip$1.99
- Big Tip$4.99
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- Huge Tip$9.99
- Massive Tip$19.99
Coo
- Monthly Unlimited1 Month trial$1.991 Month
- Yearly Unlimited1 Month trial$9.991 Year









