Comparison

Only Birthdays vs Know Your Contacts

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

Head to head
About

Only Birthdays

Easily track all your important dates with this app. Get timely reminders for birthdays and see how many days are left until the event. It offers a clean interface with light and dark modes, plus curated gift suggestions.

Highlights
  • Birthday tracking
  • Contact import
  • Customizable reminders
  • Days until birthday display
  • Age calculation
  • Gift ideas
  • Light and dark modes
Features
Read full description

Track the birthdays of your contacts and get reminders. Display days until a birthday, and the age of your friends and family. Import from contacts. Import and export from files. Light mode and dark mode. Hot gift ideas curated frequently. No ads, no subscriptions!

About

Know Your Contacts

Features
Read full description

Know Your Contacts is the ultimate contact management app to help you stay on top of the details that make your personal and professional relationships more meaningful. From organizing birthdays to tracking KYC (Know Your Customer) details and even creating profiles for family members, this app ensures you're always prepared. Whether it's remembering the class of your best friend's kids or keeping track of your colleague's son's school and age for the next company event, Know Your Contacts ensures you're never caught off guard. You can also build a personal "Know Your Family" database—birthdays, anniversaries, favorite gifts, and more. Imagine meeting your cousin’s kids and giving them the perfect gift because you remembered their favorite things, or effortlessly asking a prospect how their son's first year at Harvard has been—even after a year since your last meeting. With Know Your Contacts, these thoughtful moments become second nature. Designed for simplicity and efficiency, the app allows you to quickly enter and organize essential details about your contacts in just a few clicks. No clutter, no overwhelm—just exactly what you need, when you need it. Whether you’re deepening personal connections or nurturing professional relationships, Know Your Contacts ensures you always have the right details at your fingertips—making every interaction more thoughtful, personal, and impactful. Subscriptions : Limited (1 Month @ 0.99 $) - Ads free access for one month. Unlimited (Lifetime @ 9.99 $) - Ads free access for lifetime. Terms of use - https://kycontacts.com/terms-of-use/ Privacy Policy - https://kycontacts.com/kyc/

Screenshots

Only Birthdays4 screens
Know Your Contacts4 screens

Verdict

The call

The clearest difference is in-app purchases: Only Birthdays at none against Know Your Contacts's 2. Know Your Contacts's advantage is iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support 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. Know Your Contacts sells 2 in-app purchases, starting at $0.99 per month. Only Birthdays asks for nothing beyond the download.

UpkeepUpdate frequency

Only Birthdays ships an update every 3 weeks, Know Your Contacts fortnightly. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
Only Birthdays versus Know Your Contacts: the parameters behind the verdict, then further details
ParameterOnly BirthdaysKnow Your Contacts
PriceFreeFree
Rating4.7 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.112.0 — better
Further details — not scored
Size33 MB52 MB
Age rating4+4+
DeveloperDDGA Ltd.Krykk Ltd

In-app purchases

None

Only Birthdays

No in-app purchases

2 purchases

Know Your Contacts

Subscriptions1
  • Monthly Plan$0.991 Month
One-time1
  • One time$9.99

Questions

Is Only Birthdays free?
Only Birthdays is free to download, with no in-app purchases.
Is Know Your Contacts free?
Know Your Contacts is free to download, with in-app purchases available.
Do Only Birthdays or Know Your Contacts have ads?
Neither Only Birthdays nor Know Your Contacts shows ads.
Which is updated more often, Only Birthdays or Know Your Contacts?
Only Birthdays ships an update every 3 weeks, and Know Your Contacts fortnightly. Most recently, Only Birthdays was updated on November 3, 2026 and Know Your Contacts on November 4, 2026.

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