Date and time calc vs ThreeLinesDiary
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Date and time calc
Easily calculate the difference between dates or add/subtract time intervals. This utility app simplifies date and time arithmetic with straightforward operations.
- Date difference calculation
- Date addition and subtraction
- Time difference calculation
- Time addition and subtraction
Read full descriptionHide full description
This is a convenient app that makes date and time calculations easy. With simple operation, you can quickly perform the calculations you need. # Features - Date difference calculation - Date addition and subtraction - Time difference calculation - Time addition and subtraction
ThreeLinesDiary
A simple journaling app designed to improve sleep quality by encouraging users to write a three-line diary entry before bed. It allows for photo attachments and provides daily reminders to help build a consistent writing habit.
- Three-line daily journal entries
- Attach photos to entries
- Daily writing reminders
- Improve sleep quality
- Simple and intuitive interface
Read full descriptionHide full description
Write become just're autonomic nerve health. Write before going to bed, sleep quality is improved. 3-line diary which is said to have this effect. This app is an app that aims to write such a three-line diary. The has been prepared three items we wrote so good a word. In some cases, you might want be left with a photograph. In this app, you can save with a photo for each of the three items. Also to write every day, you might forget. In this app, by making a notification to the specified time, you will be able to habit to write at the same time each day.
Screenshots
Verdict
The clearest difference is review sentiment: ThreeLinesDiary at 75% against Date and time calc's 23%. ThreeLinesDiary also leads on update cadence (every 6 months vs every 16 months) and iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Date and time calc ships an update every 16 months, ThreeLinesDiary every 6 months. The most recent releases landed on July 23, 2026 and September 8, 2026 respectively.
| Parameter | Date and time calc | ThreeLinesDiary |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 23.1% of reviews | 75.0% of reviews β better |
| Update frequency | Every 16 months | Every 6 months β better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Ad-supported | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 17.6 | 15.0 β better |
| Further details β not scored | ||
| Size | 6 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Osamu Ishigami | Seiji Nagano |
Customer experience
Date and time calc
ThreeLinesDiary
In-app purchases
Date and time calc
No in-app purchases
ThreeLinesDiary
No in-app purchases
Questions
Is Date and time calc free?
Is ThreeLinesDiary free?
Do Date and time calc or ThreeLinesDiary have ads?
Which is updated more often, Date and time calc or ThreeLinesDiary?
Other comparisons
