UDWriter vs 3sec Diary
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
UDWriter
A handwriting memo app designed with Universal Design principles for intuitive use. Offers three color options and a simple swipe gesture to clear the screen. Accessible for all users from the first use.
- Universal Design principles
- Handwriting memo functionality
- Select 3 colors
- Swipe to clear all
- Intuitive for all users
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"We got gold prize in IAUD Award Communication Design Category." This is a application of "hand writing memo" that is based on Universal Design. - Select 3 colors. - Swipe left on the corner, clear all. - For the first time, everyone can use this. URL Scheme is udwriter://
3sec Diary
Quickly log daily activities and feelings in just three seconds. Your entries are securely stored in your iPhone Calendar, ensuring data safety and easy access. This tool helps you preserve memories and makes research and sharing effortless.
- 3-second daily logging
- Calendar integration
- Secure data storage
- Easy research and sharing
- Memory preservation
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This "3sec Diaryโ is not just a diary. You can input what you did, how you feel in this tool.It will take only 3 seconds!Your time will be saved. And you can leave it on your calendar on iPhone as long as you want. "3sec Diary โ data is not recorded on App on your iPhone.The data is recorded to your iPhone Calendar.You never miss your data when something wrong with this App. Researching ,synchronizing,sharing are so easy. This โ3sec Diaryโ is not just a diary, but your memories.
Screenshots
Verdict
The clearest difference is ads: UDWriter at none against 3sec Diary's shown. UDWriter also leads on update cadence (every 2 months vs every 26 months). 3sec Diary's advantage is review sentiment (60% vs 38%). On price, in-app purchases, monetization model 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
Both are free to download. UDWriter sells 2 one-off in-app purchases and 3sec Diary sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
UDWriter ships an update every 2 months, 3sec Diary every 26 months. The most recent releases landed on October 29, 2026 and October 21, 2026 respectively.
| Parameter | UDWriter | 3sec Diary |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 37.5% of reviews | 60.0% of reviews โ better |
| Update frequency | Every 2 months โ better | Every 26 months |
| Ads | No โ better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details โ not scored | ||
| Size | 10 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Shamrock Records, Inc. | KENJI KANEMOTO |
Customer experience
UDWriter
3sec Diary
In-app purchases
UDWriter
- Development Support + Logo on/off option$2.99
- Input Text by Using Speech Recognition$4.99
3sec Diary
- Eliminate Ads$0.99
Questions
Is UDWriter free?
Is 3sec Diary free?
Do UDWriter or 3sec Diary have ads?
Which is updated more often, UDWriter or 3sec Diary?
Other comparisons
