HappyDay! vs Ducker Detective
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HappyDay!
Never forget a birthday again with this organized datebook. It helps you manage contacts and Facebook friends, sending reminders and messages directly from the app. Stay connected and celebrate important dates effortlessly.
- Birthday organization
- Facebook friend import
- Contact list management
- Direct messaging (email, SMS, Facebook)
- Call functionality
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Have you ever imagined not forgetting your friends’ and relatives’ birthdays? What if there existed a datebook to remind you about birthdays in an organized, simple and efficient way? Now you’ve got it! NO DELAYS, NO FORGETFULNESS ANYMORE!!! FEATURES √ Organizes a list of your friends by birthdays √ convert facebook's friend to contact - importing First Name, Last Name, Birthday and Photo √ List of contacts and Facebook friends √ Send e-mail, SMS or Facebook message √ Make calls (FaceTime iPod Touch) And if you liked HappyDay! Please leave your opinion here in the AppStore!
Ducker Detective
Easily calculate anyone's age using their birth month and day. This tool can help you verify ages, play harmless pranks, or even predict baby birth dates based on due dates.
- Calculate age from birth month and day
- Verify ages
- Predict baby birth dates
- Play age-related jokes
- Age verification tool
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Do you want to find out people’s age with just the month and day of birth or want to calculate someone’s age using the built-in Age Calculator.You can find out your favorite celebrity or friends’ age also. Check when people are lying about their age. Ducker Detective is a great tool to have. Play a joke on someone and ask them for their month and day of birth and surprise them with their age or with the year they were born. Even more, do you want to predict a baby’s birth based on the doctor's expected birth to get a more accurate prediction.
Screenshots
Verdict
The clearest difference is review sentiment: Ducker Detective at 100% against HappyDay!'s 33%. Ducker Detective also leads on rating (4.8 vs 1.0) and ratings volume (24 vs 1). HappyDay!'s advantage is in-app purchases (none vs 10) and iOS requirement (7.0 vs 15.6). 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
Both are free to download. Ducker Detective sells 10 in-app purchases, starting at $0.99 per month. HappyDay! asks for nothing beyond the download.
Ducker Detective holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Ducker Detective has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 33% of HappyDay!'s written reviews are positive against 100% of Ducker Detective's.
HappyDay! ships an update every 6 weeks, Ducker Detective every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.
| Parameter | HappyDay! | Ducker Detective |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 4.8 (24 ratings) — better |
| Positive reviews | 33.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 24 — better |
| Update frequency | Every 6 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 7.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 10 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Gustavo Duarte de Oliveira | Ducker Detective, LLC |
Customer experience
HappyDay!
Ducker Detective
In-app purchases
HappyDay!
No in-app purchases
Ducker Detective
- GIF subscription monthly$0.991 Month
- Sticker subscription monthly$0.991 Month
- StickerGIF subscription montly$0.991 Month
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- GIF subscription six month$4.996 Months
- Sticker subscription six month$4.996 Months
- StickerGIF Six-Month Plan$4.996 Months
- Ad-Free Subscription Yearly$9.991 Year
- GIF subscription yearly$9.991 Year
- Sticker subscription yearly$9.991 Year
- StickerGIF subscription yearly$9.991 Year
Questions
Is HappyDay! free?
Is Ducker Detective free?
Which has better reviews, HappyDay! or Ducker Detective?
Do HappyDay! or Ducker Detective have ads?
Which is updated more often, HappyDay! or Ducker Detective?
Other comparisons
