D vs D
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
D
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How many days has it been? What weekday is your next milestone? See today as one large number, then turn the page to plan your next special day. β’ Choose from six kinds of dates: relationship, baby, birthday, wedding, upcoming, or custom. β’ Choose whether the first day counts as day one. Existing counting settings stay the same until you change them. β’ See milestones suited to each kind, including 100 days, months, anniversaries, birthdays, and past milestones. β’ Search all days, filter by kind, pin a date, drag your personal order, and preview the next 30 days. β’ Repeat Korean lunar birthdays using offline solar-date conversion for 1900β2050, with a choice of leap-month rules. β’ Use small and medium home screen widgets and lock screen widgets. Choose a different day for each widget (iOS 17 or later). β’ Set reminders in your local time. Choose date and milestone reminders and their hour. The nearest 60 reminders are refilled when you open the app. β’ Celebrate milestones and share square or portrait image cards. Hide the name before sharing; notes are always excluded. β’ Calculate the days between dates or a date N days away, then add the result directly. β’ Export and restore JSON backups, use dark mode, and follow your system language in Korean or English. No ads, tracking, or account. Your dates stay on your device. Fonts and Korean lunar data are bundled with the app.
D
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D-Day Keep β a beautiful countdown widget for every day that matters. Anniversaries, birthdays, exams, trips β keep every important date at your fingertips. # Key features β’ D-Day countdown β register any date, past or future. Days are calculated automatically every day. β’ Home screen widget β see your D-Days at a glance, no need to open the app. β’ Photo backgrounds β place a memory on your D-Day card. β’ 8 themes β Coral, Ocean, Forest, Sunset, Gold, Midnight, Blossom, Ivory. β’ Milestone alerts β D-100, 1-year, the day itself, and more. β’ Cloud backup (optional) β sign in to keep your D-Days across devices. β’ 20 languages β Korean, English, Japanese, Chinese, Spanish and more. β’ Minimal ads β light and unobtrusive. # Perfect for β’ Couples tracking 100-day & anniversary milestones β’ Family birthdays and wedding anniversaries β’ Exam prep β college entrance, certification, professional tests β’ Trips, concerts, military discharge, big events β’ Diet, quit-smoking, workout β track when you started β’ Keeping memories of someone special, with a photo # Why D-Day Keep? β’ Start instantly β no sign-up required β’ Sign in is optional β Google, Apple, or Kakao for cloud backup β’ Beautiful cards with photos & themes β every day feels like a memory β’ Home widget β your D-Days stay visible every day β’ Localized for 20 languages β naturally, not auto-translated # Privacy-first If you don't sign in, your D-Days never leave your phone. Cloud backup only applies after sign-in, and you can delete your account at any time to permanently erase all data. β’ Privacy policy: https://codesand.co.kr/app/dkeep/privacy β’ Terms of service: https://codesand.co.kr/app/dkeep/terms β’ Support: support@codesand.co.kr
Screenshots
Verdict
The clearest difference is ads: D at none against D's shown. D also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.
| Parameter | D | D |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days | Every 3 days |
| Ads | No β better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 β better | 15.0 |
| Further details β not scored | ||
| Size | 33 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | HeungYeol Kim | CodeSand Co. Ltd. |
In-app purchases
D
No in-app purchases
D
No in-app purchases









