Comparison

Big Day Countdown vs OhMyDueDate

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

Head to head
About

Big Day Countdown

Easily track important dates and hours with customizable widgets and reminders. Schedule alerts for birthdays, deadlines, and more, and visualize time remaining in hours, minutes, and seconds. Organize events into categories and personalize their appearance to stay on top of every significant moment.

Highlights
  • Interactive Home Screen Widgets
  • Customizable Alerts
  • Hour Tracker
  • Event Categorization
  • Personalized Appearance
  • Shareable Countdowns
Features
Read full description

Big Day Countdown: Widget helps you track birthdays, vacations, anniversaries, deadlines, holidays and special events with countdown widgets, reminders, a day counter and an hour tracker on your Home Screen. Create beautiful countdowns for the moments that matter most. See how many days, hours, minutes and seconds are left, set reminders, organize events, and keep important dates easy to view at a glance. Key Features: • Interactive Widgets: Add day and hour countdown widgets to your Home Screen in multiple sizes and styles. • Custom Reminders: Schedule one-time or recurring alerts for birthdays, anniversaries, deadlines, holidays and more. • Hour Tracker: View time remaining in hours, minutes and seconds for more precise countdown tracking. • Event Library: Organize events into categories such as birthdays, holidays, goals, projects and personal milestones. • Personalized Appearance: Choose colors, icons and labels to match your countdown style. • Shareable Moments: Share countdowns with friends and family through messages, email or social apps. Stay in control of every important moment, whether it is a friend’s birthday, a work deadline, your next vacation, a wedding, an anniversary or a personal goal. Big Day Countdown: Widget helps you plan ahead, reduce stress and enjoy the excitement as your big days get closer. Download Big Day Countdown: Widget today and start tracking life’s moments one day, one hour and one second at a time. Subscribe to get Pro access to all features. You will be charged after purchase confirmation. Subscriptions auto-renew 24 hours before the expiration date. You can manage your subscriptions in Account Settings on the App Store. Privacy Policy: https://sites.google.com/view/event-reminder-widget/privacy-policy Terms & Conditions: https://sites.google.com/view/event-reminder-widget/terms-conditions

About

OhMyDueDate

Features
Read full description

OhMyDueDate is a simple day counter for your important dates. You can register up to three events, and the nearest upcoming date is automatically highlighted first. When the day arrives, it shows “Today,” and for past dates it shows “Days since” for clarity. It supports both Japanese and English and switches automatically based on your device language. Key features ・Register up to 3 events ・Auto‑prioritize the nearest upcoming date ・Clear display: Days left / Today / Days since Japanese & English support (auto by device language) Keep it simple and focus on what matters. Use it for everyday plans or special milestones.

Screenshots

Big Day Countdown4 screens
OhMyDueDate3 screens

Verdict

The call

The clearest difference is in-app purchases: OhMyDueDate at none against Big Day Countdown's 3. OhMyDueDate also leads on update cadence (fortnightly vs every 3 months). Big Day Countdown's advantage is ads (none vs shown). On price, 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. Big Day Countdown sells 3 in-app purchases, starting at $3.99 per month. OhMyDueDate asks for nothing beyond the download.

UpkeepUpdate frequency

Big Day Countdown ships an update every 3 months, OhMyDueDate fortnightly. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 7 level
Big Day Countdown versus OhMyDueDate: the parameters behind the verdict, then further details
ParameterBig Day CountdownOhMyDueDate
PriceFreeFree
Rating4.7 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhoneiPhone, iPad — better
Requires iOS17.6 — better18.0
Further details — not scored
Size137 MB24 MB
Age rating17+4+
DeveloperReena WilliamsKaoru Tsukamoto

In-app purchases

3 purchases

Big Day Countdown

Subscriptions2
  • Monthly Subscription3 Days trial$3.991 Month
  • Yearly Subscriptions$12.991 Year
One-time1
  • Purchase Premium$0.99
None

OhMyDueDate

No in-app purchases

Questions

Is Big Day Countdown free?
Big Day Countdown is free to download, with in-app purchases available.
Is OhMyDueDate free?
OhMyDueDate is free to download, with no in-app purchases.
Do Big Day Countdown or OhMyDueDate have ads?
OhMyDueDate shows ads; Big Day Countdown does not.
Which is updated more often, Big Day Countdown or OhMyDueDate?
Big Day Countdown ships an update every 3 months, and OhMyDueDate fortnightly. Most recently, Big Day Countdown was updated on October 9, 2026 and OhMyDueDate on October 7, 2026.

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