Comparison

OTMON vs Nautical Calculator.

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

OTMON

Features
Read full description

OTMON is a mobile application designed specifically for students at the Politeknik Ilmu Pelayaran (PIP) Semarang. We would like to emphasize that THIS APPLICATION DOES NOT REPRESENT ANY GOVERNMENT ENTITY. All information and features available within this application are provided solely for the purpose of facilitating the reporting and monitoring of field internship activities and do not have any official endorsement, approval, or affiliation with any government agency or institution. Users are advised to always verify important information through official government sources. This application provides a digital solution for students undergoing field internships, both on ships and at related agencies, to report their progress in a real-time and structured manner. OTMON's Main Features: 1. Daily/Weekly Report Input: Students can easily complete daily or weekly field internship activity reports using the provided form. Reports can include activity descriptions, duration, and documentation (photo files). 2. Upload Supporting Documents: The application allows users to upload supporting documents, such as photos, required during field internships. 3. Notifications and Reminders: OTMON is equipped with a notification system that reminds students to submit reports on time, thus avoiding delays in reporting. 4. Discussion: The application provides a discussion forum for students and their supervisors to exchange information, ask questions, or discuss field practice activities through the messaging menu. 5. Report History: All reports submitted by students are neatly stored in the history, making them easy to review or download when needed. 6. Data Security: OTMON is equipped with a security system that maintains the confidentiality and integrity of student data, ensuring the security of personal information and field practice reports. Benefits of the OTMON Application: 1. Time Efficiency: Makes it easier for students to report field practice activities without having to fill out manual forms. 2. Transparency: Supervisors can transparently monitor student progress and provide appropriate guidance. 3. Ease of Access: The application can be accessed anytime and anywhere, as long as there is an internet connection. 4. Reporting Effectiveness: Structured and digitized reports facilitate the evaluation and assessment process. OTMON is here to support PIP Semarang students during their fieldwork, ensuring that every step and experience is well-documented and focused. With OTMON, fieldwork becomes more organized, efficient, and meaningful!

About

Nautical Calculator.

Features
Read full description

Nautical Calculator is a complete toolkit designed for sailors, marine engineers, boating enthusiasts, and navigation professionals. Perform essential nautical calculations quickly and accurately with an easy, user-friendly interface. Whether you're at sea, studying navigation, or working in the marine industry, this app helps you compute distances, bearings, speed, fuel, tides, ETA, and many other important nautical parameters. Save your time, improve accuracy, and keep all your marine tools in one place. Key Features: Course, distance & bearing calculations, Speed, fuel, and consumption estimations, Time & ETA calculations, Sail-related and marine engineering formulas, Unit conversions for knots, nautical miles & more,, Clean, intuitive, seafarer-friendly interface, Save and share results instantly, Useful for sailors, captains, students & maritime workers, A reliable companion for boating, yachting, navigation training, and professional maritime use. in-app purchase included Lifetime to Remove Ads Privacy Policy : https://docs.google.com/document/d/1Dn1gNdDP2AHL7sg-px4rxdLAcoGHlNB8/edit#heading=h.1ionsc3v3xmq Terms and Condition : https://docs.google.com/document/d/1t-LREPKByKaM0UkbIo4o0E1gdAYs21Oe30EfGxenEss/edit?usp=sharing

Screenshots

OTMON4 screens
Nautical Calculator.4 screens

Verdict

The call

The clearest difference is in-app purchases: OTMON at none against Nautical Calculator.'s 1. OTMON also leads on update cadence (every 2 months vs every 6 months). Nautical Calculator.'s advantage is iOS requirement (13.0 vs 15.6). On price, ads 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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Nautical Calculator. sells 1 one-off in-app purchase. OTMON asks for nothing beyond the download.

UpkeepUpdate frequency

OTMON ships an update every 2 months, Nautical Calculator. every 6 months. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

Scorecard3 real differences ยท 3 level
OTMON versus Nautical Calculator.: the parameters behind the verdict, then further details
ParameterOTMONNautical Calculator.
PriceFreeFree
Update frequencyEvery 2 months โ€” betterEvery 6 months
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.613.0 โ€” better
Further details โ€” not scored
Size39 MB42 MB
Age rating4+4+
DeveloperArdiansyah Setiawan SuciNanjibhai Gorasiya

In-app purchases

None

OTMON

No in-app purchases

1 purchases

Nautical Calculator.

One-time1
  • Lifetime premium$12.99

Questions

Is OTMON free?
OTMON is free to download, with no in-app purchases.
Is Nautical Calculator. free?
Nautical Calculator. is free to download, with in-app purchases available.
Do OTMON or Nautical Calculator. have ads?
Neither OTMON nor Nautical Calculator. shows ads.
Which is updated more often, OTMON or Nautical Calculator.?
OTMON ships an update every 2 months, and Nautical Calculator. every 6 months. Most recently, OTMON was updated on October 1, 2026 and Nautical Calculator. on October 13, 2026.

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