Mercury Messaging vs Countdown Days · Widgets
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mercury Messaging
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Mercury is a standalone Telegram client designed specifically for Apple Watch. Stay connected wherever you are and manage your chats directly from your wrist, no iPhone required. Mercury delivers a truly native watchOS experience, it’s also completely open-source, offering full transparency and a privacy-first approach you can trust. Whether you’re training, traveling, or simply away from your phone, Mercury keeps you connected at a glance. What you can do with Mercury - Read and reply to Telegram messages instantly - View different types of media (like photos and stickers) - Listen to audio messages directly on your watch - Easily access chats organized in folders Effortless messaging - Type with the keyboard or dictation - Record and send voice messages with a refined, custom interface - Send stickers and add reactions with ease Simple, secure login - Scan the QR code with your phone - Alternatively login by typing your phone number. Mercury is an independent, open-source project built on the official Telegram API and is not affiliated with Telegram LLC.
Countdown Days · Widgets
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Countdown Days keeps the moments you're waiting for right on your Home Screen, Lock Screen, and wrist. HOW MANY DAYS UNTIL... • Your next trip or vacation • Birthdays and anniversaries • Exams and deadlines • Payday, concerts, weddings — anything that matters COUNT UP, TOO • Days since you quit smoking • Days together • Days at your new job WIDGETS FIRST • Home Screen widgets in small and medium sizes, with big, glanceable day counts • Lock Screen widgets: circular, rectangular, and inline • Apple Watch app — your countdowns on your wrist NO CATCH • Unlimited events. Free. • No ads. No subscription. No sign-up. • Your data stays on your device — export or back up anytime as JSON. NOTIFICATIONS • Optional reminder the day before and the day of each event Countdown Days was built by one person who got tired of countdown apps that lock basic features behind subscriptions. Enjoy.
Screenshots
Verdict
The clearest difference is iOS requirement: Mercury Messaging at 15.6 against Countdown Days · Widgets's 17.0. 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Mercury Messaging | Countdown Days · Widgets |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | — | Every 10 days |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 84 MB | 2 MB |
| Age rating | 17+ | 4+ |
| Developer | Alessandro Alberti | 宇 王 |
In-app purchases
Mercury Messaging
No in-app purchases
Countdown Days · Widgets
No in-app purchases
Questions
Is Mercury Messaging free?
Is Countdown Days · Widgets free?
Do Mercury Messaging or Countdown Days · Widgets have ads?
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