Comparison

Tabdil vs Gahshomar گاهشمار

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

Head to head
About

Tabdil

Effortlessly convert dates between Persian (Solar Hijri) and Gregorian calendars. Get instant conversions with a tap and view important dates with home screen widgets. Stay organized and celebrate events with precision.

Highlights
  • Instant date conversion
  • Persian and Gregorian calendars
  • Home screen widgets
  • Nowruz countdown
  • Event planning tool
Features
Read full description

Introducing Tabdil – the essential tool for converting dates between the Persian (Solar Hijri) and Gregorian calendars! Whether you’re planning an event or managing your schedule, Tabdil makes date conversion effortless. Simply tap on any date in either calendar to instantly convert it—no more manual calculations or online searches! Plus, Tabdil includes convenient widgets, allowing you to view today’s Persian date and countdown to Nowruz 1406 right from your iPhone’s home screen. Stay organized, celebrate with precision, and make every date count. Download Tabdil today and experience seamless calendar conversion at your fingertips!

About

Gahshomar گاهشمار

Explore Iran's ancient calendrical heritage with this app. It supports the Imperial, Solar Hijri, and Gregorian calendars, offering date conversion, historical events, and educational content about Persian traditions. Enjoy a beautifully designed, multilingual interface with home screen widgets.

Highlights
  • Imperial, Solar Hijri, Gregorian calendar support
  • Seamless date conversion between systems
  • Explore historical events in Iranian history
  • Educational content on calendar origins
  • Beautiful, user-friendly interface
  • Home screen widgets
  • Multilingual support (Persian & English)
Features
Read full description

گاه‌شمار شاهنشاهی ایران گاه‌شمار میراث گاه‌شماری کهن ایران را در دستان شما قرار می‌دهد. تاریخ‌ها را در سامانه گاه‌شماری شاهنشاهی مشاهده کنید که مبدأ آن به تأسیس شاهنشاهی هخامنشی توسط کوروش بزرگ در سال ۵۵۹ پیش از میلاد بازمی‌گردد. سامانه‌های گاه‌شماری این برنامه از سه سامانه گاه‌شماری پشتیبانی می‌کند: گاه‌شماری شاهنشاهی گاه‌شمار کهن ایرانی با مبدأ تأسیس شاهنشاهی ایران. تاریخ‌ها را همان‌گونه که در دوران شکوه ایران باستان شمرده می‌شدند تجربه کنید. هجری شمسی گاه‌شمار امروزی ایران بر پایه سال خورشیدی که امروزه در ایران و افغانستان استفاده می‌شود. میلادی گاه‌شمار بین‌المللی که در سراسر جهان به کار می‌رود. ویژگی‌های کلیدی تبدیل تاریخ تبدیل آسان تاریخ بین هر سه سامانه گاه‌شماری. هر تاریخی را به صورت شاهنشاهی، هجری شمسی یا میلادی مشاهده کنید. رویدادهای تاریخی تاریخ‌های مهم در تاریخ ایران را از دوران باستان تا امروز کاوش کنید. با جشن‌های فرهنگی، نقاط عطف تاریخی و مراسم سنتی آشنا شوید. محتوای آموزشی تاریخ غنی پشت گاه‌شمار شاهنشاهی را کشف کنید: - ریشه‌های زرتشتی نام ماه‌های ایرانی - پیوند ماه‌های ایرانی با بروج - اهمیت جشن‌های کهن ایرانی طراحی زیبا - رابط کاربری ساده و کاربرپسند - پشتیبانی از حالت تاریک و روشن - چیدمان کامل راست به چپ برای فارسی - ویجت‌های صفحه اصلی برای مشاهده سریع تاریخ پشتیبانی چندزبانه به فارسی و انگلیسی با بومی‌سازی کامل و پشتیبانی مناسب از راست به چپ. درباره این برنامه گاه‌شمار یک ابزار آموزشی است که برای حفظ و ترویج میراث گاه‌شماری پیش از اسلام ایران طراحی شده است. گاه‌شمار شاهنشاهی بخش مهمی از تاریخ فرهنگی ایران را نمایندگی می‌کند. این برنامه یک پروژه آموزشی مستقل است و با هیچ نهاد دولتی یا سازمان سیاسی وابستگی ندارد. تمام اطلاعات تاریخی برای اهداف آموزشی ارائه شده است. گاه‌شمار را امروز دانلود کنید و با هزاران سال تاریخ ایران پیوند برقرار کنید. جاوید شاه Discover the Persian Imperial Calendar Gahshomar brings Iran's ancient calendrical heritage to your fingertips. View dates in the Shahenshahi (Imperial) calendar system, which traces its epoch to the founding of the Achaemenid Empire by Cyrus the Great in 559 BCE. CALENDAR SYSTEMS The app supports three calendar systems: Imperial Calendar (Shahenshahi) The ancient Persian calendar with its epoch at the founding of the Persian Empire. Experience dates as they were counted during the glory of ancient Persia. Solar Hijri (Shamsi) The modern Iranian calendar based on the solar year, widely used in Iran and Afghanistan today. Gregorian Calendar The international civil calendar used worldwide. KEY FEATURES Date Converter Seamlessly convert dates between all three calendar systems. View any date in Imperial, Solar Hijri, or Gregorian format instantly. Historical Events Explore significant dates in Iranian history, from ancient times to the present. Learn about cultural celebrations, historical milestones, and traditional observances. Educational Content Discover the rich history behind the Imperial calendar, including: - The Zoroastrian origins of Persian month names - The connection between Persian months and the zodiac - The significance of ancient Iranian festivals Beautiful Design - Clean, intuitive interface - Dark mode and light mode support - Full right-to-left (RTL) layout for Persian - Home screen widgets for quick date viewing Multilingual Support Available in English and Persian (Farsi) with complete localization and proper RTL support. ABOUT THIS APP Gahshomar is an educational tool designed to preserve and promote Iran's pre-Islamic calendrical heritage. The Imperial calendar represents an important part of Persian cultural history. This app is an independent educational project and is not affiliated with any government entity or political organization. All historical information is presented for educational purposes. Download Gahshomar today and connect with thousands of years of Persian history. Javid Shah

Screenshots

Tabdil4 screens
Gahshomar گاهشمار4 screens

Verdict

The call

The clearest difference is in-app purchases: Gahshomar گاهشمار at none against Tabdil's 1. Gahshomar گاهشمار also leads on update cadence (every 4 days vs every 4 months) and ratings volume (191 vs 5). On price, rating, review sentiment and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Tabdil sells 1 in-app purchase, starting at $0.99 per year. Gahshomar گاهشمار asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Tabdil against 4.9 for Gahshomar گاهشمار. That said, the two scores are not equally well evidenced: Gahshomar گاهشمار has 191 ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Tabdil ships an update every 4 months, Gahshomar گاهشمار every 4 days. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 5 level
Tabdil versus Gahshomar گاهشمار: the parameters behind the verdict, then further details
ParameterTabdilGahshomar گاهشمار
PriceFreeFree
Rating5.0 (5 ratings) — better4.9 (191 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings5191 — better
Update frequencyEvery 4 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad — better
Requires iOS18.016.4 — better
Further details — not scored
Size27 MB67 MB
Age rating4+4+
DeveloperKung Fu Grip LLCAppfium UG

Customer experience

Tabdil

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Gahshomar گاهشمار

All ratings191 ratings
Positive99.0%
Neutral0.0%
Negative1.0%
Written reviews51 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Tabdil

Subscriptions1
  • Tabdil subscription$0.991 Year
None

Gahshomar گاهشمار

No in-app purchases

Questions

Is Tabdil free?
Tabdil is free to download, with in-app purchases available.
Is Gahshomar گاهشمار free?
Gahshomar گاهشمار is free to download, with no in-app purchases.
Which has better reviews, Tabdil or Gahshomar گاهشمار?
Tabdil is rated higher. Tabdil averages 5.0 out of 5 from 5 ratings, while Gahshomar گاهشمار averages 4.9 from 191 ratings.
Do Tabdil or Gahshomar گاهشمار have ads?
Neither Tabdil nor Gahshomar گاهشمار shows ads.
Which is updated more often, Tabdil or Gahshomar گاهشمار?
Tabdil ships an update every 4 months, and Gahshomar گاهشمار every 4 days. Most recently, Tabdil was updated on October 10, 2026 and Gahshomar گاهشمار on October 13, 2026.

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