Stopwatch 4 Time Study vs Calendaric
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stopwatch 4 Time Study
This app helps record cycle times and perform simple time measurements. It offers automatic recording via accelerometer or camera, detailed statistical analysis, and data export options.
- Automatic recording via accelerometer/camera
- Detailed statistical analysis (OEE, averages, dispersion)
- Time recording with comments
- Export data via email (CSV) or PDF report
- Cloud sync and sharing
- Customizable views (black/white, color-coded values)
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Stopwatch 4 Time Study is a professional yet easy-to-use app for recording, analyzing, and documenting cycle times on iPhone and iPad. Features * Display times in decimal minutes (1/100 min) or minutes and seconds * Add, deactivate, reactivate, and delete individual measurements * Record cycle times manually or automatically * Automatic triggering using the accelerometer to detect movement or vibration * Automatic triggering using the camera by comparing a reference image with the current image * Define the number of parts produced per cycle * Apply individual performance ratings to measurements * Add notes and predefined reasons for interruptions * Configure side buttons for convenient operation Statistics and Analysis * Parts per hour * Average, range, minimum, and maximum * Accuracy (epsilon) and standard deviation * Number of valid measurements * Estimated number of additional measurements required to reach the configured accuracy target * Color-coded minimum and maximum values * Distribution chart, individual-value chart, and boxplot * Optional display or hiding of deactivated measurements * Outlier analysis based on the 1.5 IQR rule Managing Time Studies * Rename and delete recordings * Organize recordings in folders * Move recordings between folders * Sort recordings by name or date * Search recordings * Import and export time studies in the .sft format using the iOS Share Sheet * Export measurement data as CSV with configurable decimal and value separators * Create and restore complete ZIP backups Reports and Sharing * Generate comprehensive PDF time-study reports * Include statistics, charts, individual measurements, and notes * Share SFT, CSV, PDF, and ZIP files using the iOS Share Sheet iPad and Process Flow * Optimized split-view interface for iPad * Perform standard time studies using the same features available on iPhone * Import Process Flow projects prepared with the Stopwatch 4 TS Web App * Record individual activities and complete production cycles * Add part notes and interruption reasons * Export completed Process Flow measurements while preserving the original project and folder structure Additional Options * Light and dark appearance * Haptic feedback * Optional prevention of automatic screen locking * Configurable OEE, accuracy, performance-rating, and CSV settings * Read-only access to existing legacy iCloud recordings The legacy iCloud area is provided only for accessing and downloading existing cloud recordings. Uploading new recordings and sharing them using Sharing Keys are no longer supported.
Calendaric
This app helps you manage your tasks and avoid forgetting important events. It allows you to organize your to-do list by segments and features, ensuring you stay on top of your responsibilities. Available across multiple platforms, it acts as an extension of your memory.
- Task organization by segments
- Customizable features per segment
- Cross-platform availability
- Web browser access
- Task grouping and filtering
- Prevents forgetting important events
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"I forgot!". How often do you pronounce this phrase? Once a week? Once a day? Each hour? There is no such person on earth who never forgets anything. This is how our brain works. So we think. It is only necessary to distract our attention, and we have already forgotten about something significant that we should do. What did you have to pay for your forgetfulness? Sometimes the consequences are not so serious, but it often happens that it completely changes our lives. For example, financial losses if you suddenly forgot to pay off a loan or extend insurance. Grievances of relatives and friends, if you forgot to congratulate them on the anniversary. A spoiled vacation if you mixed up time and your plane flew away without you. A lot of events are happening around us. For many of them, we must make decisions. Do not keep everything in mind! Do not rely on your memory! Do not keep in mind a list of planned tasks! Just fix your thought, even if it will be a simple piece of paper at your fingertips. Of course, in the modern world, a person will likely have a smartphone at hand rather than a scrap of paper with a pen. Today's gadgets are a kind of extender of the human brain into which you can store and store a large amount of information in them. So, do not keep your mind in mind! Save them in our application on your smartphone, tablet, or computer in a web browser if you are currently using a computer. To do this, open the application or go to our website. Our application works on all available platforms and browsers. Here comes the time. You save tasks in the to-do list. The list is growing. Some tasks need to be done tomorrow. Some in a year. Gradually, there are so many such tasks that you are no longer able to cover everything at once. You have to re-read the huge to-do list over and over again to see what else needs to be done today. It is very uncomfortable. How to be There is a solution. You can group tasks by their application segments. Our life is impossible without the world around us. What is around us affects us and requires us to take some action. The objects surrounding us can be divided into segments: things, money, family, education, and health. These segments, in turn, can be divided into several more features. For example, parts of a thing can be divided into a house, a cottage, a car, or a snowmobile. Each such element has its list of tasks that must be completed. For example, repair a door in a home, extend insurance for a car, and plant dill in a country house. Thus, a massive list of tasks you can quickly scatter into folders-segments and thereby restore order in your records. Each segment has its own set of features. It is configured individually for each person based on his needs. So, the to-do list is compiled and segmented. But he is still huge. It contains tasks that need to be done shortly, which will be in a year, expired tasks, and tasks that do not have a specified deadline. How to shorten the list and select only those tasks that are currently of interest? A powerful filter system in the application will help you with this, allowing you to accomplish this. With the application, you can look into the future. Set the current date to the calendar, for example, the day after tomorrow, and you will see from this point in time which tasks you must complete on this day and which will be overdue. We approached the most important thing. There is a list of tasks, but when to perform them? The schedule planner will help you with this. Open the schedule for the current day in the second panel and drag what you want to do from the task tree into the schedule timeline. Thus, you can plan your day and any other day. LICENSED APPLICATION END USER LICENSE AGREEMENT https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Stopwatch 4 Time Study at 100% against Calendaric's 50%. Stopwatch 4 Time Study also leads on rating (5.0 vs 1.0). Calendaric's advantage is update cadence (every 2 weeks vs every 2 months) and device support (4 vs 2). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Stopwatch 4 Time Study holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 100% of Stopwatch 4 Time Study's written reviews are positive against 50% of Calendaric's.
Stopwatch 4 Time Study ships an update every 2 months, Calendaric every 2 weeks. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.
| Parameter | Stopwatch 4 Time Study | Calendaric |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 18.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Herzog | Time Lord |
Customer experience
Stopwatch 4 Time Study
Calendaric
In-app purchases
Stopwatch 4 Time Study
No in-app purchases
Calendaric
No in-app purchases
Questions
Is Stopwatch 4 Time Study free?
Is Calendaric free?
Which has better reviews, Stopwatch 4 Time Study or Calendaric?
Do Stopwatch 4 Time Study or Calendaric have ads?
Which is updated more often, Stopwatch 4 Time Study or Calendaric?
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