Time vs PipeChecker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Time
Calculate time durations with hours and minutes. Supports addition, subtraction, multiplication, and division, with features like calculation history, memory keys, and customizable preset buttons for quick time additions. Choose from various color themes.
- Calculate hours and minutes
- Add, subtract, multiply, divide time
- Calculation history saved
- Memory keys for subtotals
- Preset keys for one-touch time addition
- Customizable color themes
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This application allows you to calculate time (hours and minutes). You can calculate things like 1:30+0:50. When you enter a number, ":" is automatically inserted to separate the hour and minute, so you can calculate quickly. This is useful for calculating total work hours, time spent on daily errands, and travel time. You can add, subtract, multiply, and divide. The calculation history is automatically saved, so you can check it later. A memory key is provided, allowing you to save and add subtotals. Minutes that are often used for calculations (15 minutes, 30 minutes, etc.) can be registered and used for one-touch addition. A button to add 24 hours is provided for calculations when crossing days. It comes in a variety of colors such as orange, green, cyan, pink, and black, and you can choose the one you like best. [ List of functions ] You can calculate hours and minutes, or minutes and seconds. You can check the calculation history, and touch the answer displayed in the history to reuse it for calculations. The memory keys can be used to save, add, and subtract subtotals. By setting the preset keys, you can use the most frequently used time (minutes) for calculation with a single touch. The color of the application can be selected.
PipeChecker
This tool assists HVAC, sanitary, and plant piping engineers in selecting optimal pressure piping sizes with simple operations. It streamlines the design process for piping equipment technicians.
- Optimal pressure pipe sizing
- Simplified operation
- For piping equipment technicians
- Supports HVAC, sanitary, and plant systems
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このプログラムは、空調・衛生・プラント等の配管設備技術者のためのツールです。簡単な操作で最適な配管(圧力配管)サイズを選択できます。
Screenshots
Verdict
The clearest difference is review sentiment: Time at 100% against PipeChecker's 0%. Time also leads on price ($1.99 vs $7.99) and iOS requirement (13.0 vs 15.0). PipeChecker's advantage is update cadence (every 4 months vs every 14 months). On ads, in-app purchases, monetization model 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
Time costs $1.99 and PipeChecker $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Time ships an update every 14 months, PipeChecker every 4 months. Both last shipped on September 21, 2026.
| Parameter | Time | PipeChecker |
|---|---|---|
| Price | $1.99 — better | $7.99 |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 3 — better | — |
| Update frequency | Every 14 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 64 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | YUTAKA KENJO | AIR DESIGN, INC. |
Customer experience
Time
PipeChecker
In-app purchases
Time
No in-app purchases
PipeChecker
No in-app purchases









