Calculator with 11 button vs Countdown App
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Calculator with 11 button
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A calculator with a (11) button that allows for fast typing
Countdown App
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Count down to the moments that matter, or count up from the ones that already happened. Weddings, trips, birthdays, anniversaries, exams, launches, days since you quit something: keep them right on your Home Screen and Lock Screen. Free ā¢ Up to 3 countdowns or count-ups ā¢ Home Screen widget (pick one countdown for your widget) ā¢ Display options from days only to days, hours, and minutes Countdown+ (one-time purchase) ā¢ Photo widgets: put your own picture behind any countdown on your Home Screen ā¢ Unlimited countdowns and count-ups ā¢ Multiple Home Screen widgets: different countdown for each widget ā¢ Lock Screen widgets for a quick glance ā¢ Accent themes for the app and widgets ā¢ No subscriptions, pay once and keep forever Privacy-friendly by design: your events live locally on your iPhone.
Screenshots
Verdict
The clearest difference is in-app purchases: Calculator with 11 button at none against Countdown App's 1. Countdown App's advantage is ads (none vs shown) and iOS requirement (18.0 vs 26.0). On price, update cadence and device support there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Countdown App sells 1 one-off in-app purchase. Calculator with 11 button asks for nothing beyond the download.
Calculator with 11 button ships an update every 2 months, Countdown App monthly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.
| Parameter | Calculator with 11 button | Countdown App |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Monthly ā better |
| Ads | Yes | No ā better |
| In-app purchases | No ā better | Yes |
| Devices | iPhone | iPhone, iPad ā better |
| Requires iOS | 26.0 | 18.0 ā better |
| Further details ā not scored | ||
| Size | 42 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | Robert Maeda |
In-app purchases
Calculator with 11 button
No in-app purchases
Countdown App
- Countdown Premium$3.99
Questions
Is Calculator with 11 button free?
Is Countdown App free?
Do Calculator with 11 button or Countdown App have ads?
Which is updated more often, Calculator with 11 button or Countdown App?
Other comparisons
