Command vs Chroniton
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Command
This app offers a command-line interface for performing complex calculations, including chained operations, variable assignments, and advanced mathematical functions. It supports various number bases, constants, and provides a built-in help system for ease of use.
- Command-line interface
- Chained calculations
- Variable assignment
- Complex numbers
- Multiple number bases
- Unit and function definition
- Extensive math functions
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Command-Line Calculator (CLCalculator) provides the most fluid interface, especially if you are performing chained calculations i.e. multiple calculations that rely on the results of previous calculations. By providing a command-line interface, CLCalculator allows you to easily enter and view the history of your calculations. You focus on your calculations instead of being intimidated by myriad of buttons on a traditional calculator interface! In addition to performing basic calculations, CLCalculator provides an array of features such as: - Assign and reuse variables - Complex numbers - Number bases i.e. binary, octal, hexadecimal - Constants e.g. e, pi - String manipulation - Matrices - Unit conversion: in-built and user-defined (create your own units!) - Functions: in-built and user-defined (create your own functions!) - Arithmetic functions e.g. fraction, square root, rounding off, ceiling, floor, logarithm - Algebra functions e.g. derivative, simplify symbolic expressions, solve linear equations - Bitwise functions e.g. bitwise and, not, or, left and right shift - Combinatorics functions e.g. Bell, Catalan, Stirling numbers - Geometry functions - Logical functions e.g. and, not, or, xor - Probability functions e.g. combinations, permutations, factorial - Relational functions - Set functions e.g. cartesian product, intersection, union - Statistics functions e.g. mean, median, mode, standard deviation, variance - Trigonometry functions e.g. sin, cos, tan, cot, sinh, acos - and much more! The app also comes with a comprehensive in-built help system with plenty of examples. CLCalculator is powered by math.js (https://mathjs.org/)
Chroniton
This app helps you track important dates and recurring events, providing reminders for future tasks. It's useful for managing everything from car maintenance and household chores to personal milestones and pet care.
- Event and date tracking
- Customizable categories
- Next due date reminders
- Photo and note attachments
- One-tap date updates
- Email event sharing
- iCloud sync
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Chroniton is an event and date tracker that helps you remember when something was done and reminds you when you need to revisit it again. Use Chroniton to: - Keep track of automotive maintenance (oil changes, when tires were last changed, when next regular service is due, etc) - Track recurring household maintenance needs (furnace/AC filter changes, last gutter cleaning, etc) - Track purchase dates and warranty expiration dates. - Keep lists of significant personal events (last eye exam, last dental cleaning, last check of credit reports, etc) - Remember a history of events for you kids such as the last allowance raise, the last time school portraits were done, etc. - Track pet-related events like vet visits, immunizations, license/tag registrations, etc. - Keep a reminder of important financial dates (when you last paid your annual car insurance premium, date you signed your apartment lease, date you signed your cell phone contract, when you last reviewed your W2 status, etc) - Keep track of any event you want to be able to refer back to! Key Features: - Add photo to events - Add unlimited notes to any event - Define your own categories - Assign a “next due” date to any event (events due soon show a yellow indicator, events past due show a red indicator) - Update an event’s date as “done today” with one tap - Send any event, or your whole list, to an email - Reorder events and categories to see your most important items at the top - Quick-entry buttons to set dates a week, a month, or a year in the future - Easily add or delete events from the main screen - Portrait and landscape views supported on both iPhone and iPad - Use multiple devices with automatic iCloud sync
Screenshots
Verdict
The clearest difference is update cadence: Command at every 5 days against Chroniton's every 38 months. Command also leads on device support (4 vs 2) and iOS requirement (13.0 vs 16.4). On price, review sentiment, 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.
Command ships an update every 5 days, Chroniton every 38 months. The most recent releases landed on September 9, 2026 and October 15, 2026 respectively.
| Parameter | Command | Chroniton |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 5 — better | — |
| Update frequency | Every 5 days — better | Every 38 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Ketan Appa | Driftwood Studio Software LLC |
Customer experience
Command
Chroniton
In-app purchases
Command
No in-app purchases
Chroniton
No in-app purchases









