365 Days Calendar vs MakeCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
365 Days Calendar
This utility app converts between Julian and Gregorian dates and tracks Julian Day Numbers. It's designed for users in fields like astronomy, military operations, and historical research who need precise date management for daily operations.
- Julian to Gregorian date conversion
- Gregorian to Julian date conversion
- Julian Day Number tracking
- Historical date reference management
- Scientific date reference management
- User-friendly interface
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The Julian Date Calendar App is a simple yet powerful tool for converting between Julian and Gregorian dates, tracking Julian Day Numbers (JDN), and managing historical or scientific date references. Whether you're working in astronomy, military operations, food production, or historical research, this app offers accurate and efficient support for daily operations, all with a user-friendly experience.
MakeCalc
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Make your own custom calculator. Enter your own formula, for example calculating tip splitter, compound interest, dosage calculator, ROI estimator, or any formula such as y = ax + b. Your calculator can then be named and saved for future use. This is minimalist by design with no ads, no bells and whistles, and no fancy graphics to distract you, just utility with your own custom calculators. © 2025–2026 29Apps LLC, All rights reserved.
Screenshots
Verdict
The clearest difference is price: MakeCalc at Free against 365 Days Calendar's $1.99. MakeCalc also leads on update cadence (every 2 weeks vs every 2 months). On ads, in-app purchases, device support and iOS requirement 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
MakeCalc is free to download; 365 Days Calendar costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
365 Days Calendar ships an update every 2 months, MakeCalc every 2 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | 365 Days Calendar | MakeCalc |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 4.7 (27 ratings) — better | — |
| Positive reviews | 71.4% of reviews | — |
| Number of ratings | 27 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Cyberdeploy Inc. | 29Apps LLC |
In-app purchases
365 Days Calendar
No in-app purchases
MakeCalc
No in-app purchases
