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Comparison

DDays vs 솔라 캘린더

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

Head to head
DDays
DDays

Simple D-day

Free
🌟 Lifestyle
No ratingsView app →
솔라 캘린더 - 일정과 할 일
솔라 캘린더
Free
🌟 Lifestyle
No ratingsView app →
About

DDays

Track important upcoming events with timely notifications. View countdowns directly on your home screen and lock screen widgets.

Highlights
  • D-day tracking
  • Advance notifications
  • Home screen widget
  • Lock screen widget
  • Live activity display
Read full description

Meet Simple D-day! You can check notifications and live-activity 24 hours in advance. Check D-Day through the Home screen, the lock screen widget!

About

솔라 캘린더

Features
Read full description

솔라 캘린더에서 일정과 할 일을 한눈에 정리해 보세요. • 월간 달력에서 공휴일과 여러 날에 걸친 일정을 확인해요. • 반복 일정과 알림으로 중요한 약속을 챙겨요. • 할 일의 우선순위를 정하고 완료한 일을 체크해요. • 고양이 스티커로 날짜와 요일을 꾸며요. • 라이트·다크 화면과 색상 테마를 선택해요. • 홈 화면 위젯에서 일정을 확인해요. 기존 Scheduler의 일정과 계정을 그대로 이어서 사용할 수 있어요. 스티커는 현재 기기에 저장돼요.

Screenshots

DDays4 screens
솔라 캘린더3 screens

Verdict

The call

The clearest difference is ads: DDays at none against 솔라 캘린더's shown. 솔라 캘린더's advantage is update cadence (every 3 days vs every 2 weeks). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DDays ships an update every 2 weeks, 솔라 캘린더 every 3 days. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 6 level
DDays versus 솔라 캘린더: the parameters behind the verdict, then further details
ParameterDDays솔라 캘린더
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 2 weeksEvery 3 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.016.4 — better
Further details — not scored
Size5 MB72 MB
Age rating4+4+
DeveloperLee JaehoSEONGHOON JEON

In-app purchases

None

DDays

No in-app purchases

None

솔라 캘린더

No in-app purchases

Questions

Is DDays free?
DDays is free to download, with no in-app purchases.
Is 솔라 캘린더 free?
솔라 캘린더 is free to download, with no in-app purchases.
Do DDays or 솔라 캘린더 have ads?
솔라 캘린더 shows ads; DDays does not.
Which is updated more often, DDays or 솔라 캘린더?
DDays ships an update every 2 weeks, and 솔라 캘린더 every 3 days. Most recently, DDays was updated on October 8, 2026 and 솔라 캘린더 on October 12, 2026.

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