| Price | Free for up to 10 saved dates; Plus $4.99/mo; Premium $9.99/mo | Free | Free for email reminders; texts and phone calls use prepaid credits from 6p (£0.06); Pro £3/mo or £30/yr | Free, with unlimited reminders | Free for one-time reminders; Premium $3/mo billed yearly ($36/yr) or $5/mo | Free | Free account and reminder emails; mailed paper cards $5.99 for one plus a stamp, less in bulk |
| Where it runs | Any web browser, plus an app for Mac | A web app | A web app for phones and computers | Website | Website | Website, plus Punchbowl apps on the App Store and Google Play | Website |
| Reminders | Email on the days you choose (the day before by default); Mac notifications in the Mac app | An email on the day of the birthday, at the time you set | Email, text or phone call at the minute you set, repeating daily, weekly, monthly or yearly; several per event | Email, cell phone or RSS; up to 5 per date, from 30 days before to the day itself | An email at the date and time you set; repeating reminders, such as a yearly birthday, are Premium only | Email on the days you pick, such as a month or two weeks before, or on the day; more than one per date | Birthday reminder emails about a week ahead |
| Help with the message | Free message templates; AI-written drafts on Plus and Premium | Not listed | Not listed; a reminder can go to any email address, so you can schedule a note you wrote | Reminder emails suggest ecards, paper greeting cards and gifts | Not listed | Free eCards you can send on the day or schedule | You type the message; it prints, stamps and mails a paper card for you |
| Getting dates in | Add by hand, or import a contacts (.vcf) or calendar (.ics) file or a CSV of contacts | Add by hand, or import from Facebook | Add each event in the web app | Add by hand, import from another calendar such as Outlook, or ask people with its Birthday Requester | Fill in a form for each reminder; no sign-up needed for free ones | Add by hand, or ask friends and family for their dates by email, text or social media | Upload a spreadsheet, or send people a form to fill in their own details |