Comparison

Open Invite vs Countdowner

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

Head to head
About

Open Invite

Features
Read full description

Welcome to Open Invite โ€” the beautiful way to open .ics calendar files on iOS. โ€ข Tap to open calendar invitations from Mail, Safari, or Files โ€ข Preview events before adding with gorgeous invitation cards โ€ข Catch scheduling conflicts with visual timeline view โ€ข Choose which calendar to use for each event โ€ข Swipe through multi-event files as a card stack โ€ข Complete privacy โ€” everything happens on-device Open Invite handles .ics files the way they should work โ€” tap, preview, add. One second, not one minute. Stop forwarding calendar invites to yourself: Receive a meeting invitation in Mail, download an event from Safari, or find an .ics file in Files? Just tap it. Open Invite shows you a beautiful preview card with every detail โ€” title, time, location, organizer, attendees, notes โ€” so you can decide before it touches your calendar. SEE BEFORE YOU COMMIT Preview the full event as a beautiful invitation card. No more blind adds. No more calendar clutter from events you didn't mean to accept. CATCH CONFLICTS BEFORE THEY HAPPEN See a visual timeline of your day alongside the new event. Spot double-bookings before you commit. KEEP WORK AND LIFE SEPARATE Pick exactly which calendar to use. Client meetings go in Work, soccer games in Family. Just want speed? Basic access adds to your default calendar instantly. ONE TAP FROM ANYWHERE Works with Mail, Safari, Files, or any app that handles calendar files. Open Invite registers as a native file handler โ€” no forwarding to yourself, no copy-pasting dates. MULTIPLE EVENTS? NO PROBLEM Some invites contain a full season schedule or conference agenda. Swipe through them like a card deck and add events one at a time. YOUR CALENDAR STAYS YOURS Everything happens on your iPhone. Zero cloud servers. Zero tracking. Zero accounts. Progressive calendar access means you choose what the app can see โ€” write-only to add events, or full access for conflict detection and calendar selection.

About

Countdowner

Easily track important dates like birthdays, vacations, and weddings with custom countdowns. Add widgets to your home and lock screens for quick visibility and receive timely reminders. Sync across devices and Apple Watch for seamless event tracking.

Highlights
  • Unlimited custom countdowns
  • Home and Lock Screen widgets
  • Local event reminders
  • Apple Watch sync
  • iCloud device sync
  • Customizable themes and icons
Features
Read full description

Count down to the moments you're looking forward to โ€“ birthdays, vacations, weddings, exams and every big day in between. See the days left at a glance on your Home Screen, Lock Screen and Apple Watch. WHY COUNTDOWNER โ€ข Unlimited countdowns โ€“ with a date or exact time, notes, colors, icons or any emoji โ€ข Home Screen & Lock Screen widgets โ€“ your next event always in view, with a live ticking timer โ€ข Smart reminders โ€“ 1 week before, 1 day before and right when it happens โ€ข Apple Watch app โ€“ check how long is left, right from your wrist โ€ข iCloud sync โ€“ your countdowns on all your devices โ€ข Free to download, full version as a one-time purchase โ€“ no subscription, no sign-up HOW IT WORKS 1. Tap +, name your event and pick the date 2. Choose a color and an icon or emoji 3. Add a widget โ€“ done PERFECT FOR Birthdays ยท Vacations & trips ยท Weddings & anniversaries ยท Exams & deadlines ยท Christmas & New Year ยท Concerts & festivals ยท Due dates ยท Retirement MAKE IT YOURS Light or dark theme, compact or detailed display, English or German โ€“ and decide whether past events stay visible or disappear. Start your first countdown today and enjoy the anticipation.

Screenshots

Open Invite4 screens
Countdowner4 screens

Verdict

The call

The clearest difference is update cadence: Countdowner at every 10 days against Open Invite's every 7 months. Countdowner also leads on iOS requirement (18 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Open Invite sells 3 one-off in-app purchases and Countdowner sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Open Invite ships an update every 7 months, Countdowner every 10 days. Both last shipped on October 28, 2026.

Scorecard2 real differences ยท 6 level
Open Invite versus Countdowner: the parameters behind the verdict, then further details
ParameterOpen InviteCountdowner
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyEvery 7 monthsEvery 10 days โ€” better
AdsNoNo
In-app purchasesYesYes
Monetizationโ€”Paid
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS26.018 โ€” better
Further details โ€” not scored
Size7 MB6 MB
Age rating4+4+
DeveloperChristian TietzeFabian Will

In-app purchases

3 purchases

Open Invite

One-time3
  • Thank You$0.99
  • Appreciation Tip$2.99
  • Showing Support$4.99
1 purchases

Countdowner

One-time1
  • Full Version$1.99

Questions

Is Open Invite free?
Open Invite is free to download, with in-app purchases available.
Is Countdowner free?
Countdowner is free to download, with in-app purchases available.
Do Open Invite or Countdowner have ads?
Neither Open Invite nor Countdowner shows ads.
Which is updated more often, Open Invite or Countdowner?
Open Invite ships an update every 7 months, and Countdowner every 10 days. Most recently, Open Invite was updated on October 28, 2026 and Countdowner on October 28, 2026.

Other comparisons