Comparison

Smooth Countdown vs D

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Check D-Day!!!

★ 5.01 ratingsView app →

About

Smooth Countdown

Features

Read full description

Countdown the time with a smoothly animated background. It is the perfect reminder while the device waits in the dock. Features: - toggle between day and night mode - choose between no alarm, one alarm or repeated alarm sound - supports the 12 and 24 hour format - uses local notifications when the timer runs up

About

D

Easily set and track important dates, such as D-Day. This utility app helps you monitor the remaining time until your specified events.

Highlights

Set D-Day
Check remaining time
Event tracking
Simple interface

Features

Read full description

Set D-Day and check remain.

Screenshots

Smooth Countdown4 screens

D4 screens

Verdict

The call

The clearest difference is price: D at Free against Smooth Countdown's $0.99. D also leads on update cadence (every 2 months vs every 21 months). Smooth Countdown's advantage is iOS requirement (15.6 vs 17.0). On 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

CostPrice · In-app purchases · Ads · Monetization

D is free to download; Smooth Countdown costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Smooth Countdown ships an update every 21 months, D every 2 months. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 6 level

Smooth Countdown versus D: the parameters behind the verdict, then further details
Parameter	Smooth Countdown	D
Price	$0.99	Free — better
Rating	—	5.0 (1 ratings) — better
Number of ratings	—	1 — better
Update frequency	Every 21 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod	iPhone, iPad, Apple Watch
Requires iOS	15.6 — better	17.0
Further details — not scored
Size	1 MB	7 MB
Age rating	4+	4+
Developer	Piet Jonas	Si-Wan Yoon

In-app purchases

None

Smooth Countdown

No in-app purchases

None

D

No in-app purchases

Questions

Is Smooth Countdown free?

Smooth Countdown costs $0.99, with no in-app purchases.

Is D free?

D is free to download, with no in-app purchases.

Do Smooth Countdown or D have ads?

Neither Smooth Countdown nor D shows ads.

Which is updated more often, Smooth Countdown or D?

Smooth Countdown ships an update every 21 months, and D every 2 months. Most recently, Smooth Countdown was updated on October 4, 2026 and D on October 24, 2026.