Comparison

Calvim vs Defyx

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

Head to head
About

Calvim

This app offers a fast, lightweight, and beautifully designed Shamsi calendar with full Persian and Gregorian date support. It features customizable event selection, comprehensive event management, and modern, user-friendly widgets. Stay organized with its intuitive interface and updated holiday display.

Highlights
  • Lightweight and fast performance
  • Beautifully designed widgets
  • Modern and user-friendly interface
  • Full Persian and Gregorian date support
  • Customizable event selection
  • Comprehensive event management
  • Light and dark mode support
Features
Read full description

Calvim (formerly ShamsiPlus) is a free Persian calendar for iPhone, iPad and Apple Watch: Shamsi (Jalali) dates, Iranian holidays, tasks, notes, work shifts and widgets. No ads, no account, works offline. کالویم (شمسی پلاس سابق): تقویم شمسی ۱۴۰۵ با تعطیلات رسمی، کارها، یادداشت‌ها، شیفت کاری و ویجت. رایگان و بدون تبلیغات. IRANIAN CALENDAR & HOLIDAYS • Official Iranian holidays, including the 1406 holidays. • 1,000+ occasions: national and religious days, Hijri (lunar) dates, world days and Persian celebrations like Nowruz, Mehregan and Yalda. Turn any category on or off. • Nowruz countdown with reminders. • Choose your first day of the week and your weekend days. TODAY ON ONE SCREEN • Home shows today's occasions, tasks and notes, your week and the year's progress. Move overdue tasks to today in one tap. TASKS, NOTES & REMINDERS • Tasks with dates, times and reminders, grouped into Overdue, Today and Upcoming. Pin important notes. • Personal events on Shamsi or Gregorian dates: all-day or timed, colors, repeats, multiple reminders and custom holidays. • One search for events, tasks and notes. WORK SHIFT CALENDAR • For nurses, doctors and anyone on shifts: set shift types and a repeating rotation, paint days on the month, see a monthly summary and get reminders for each shift. DATE CONVERTER • Shamsi to Gregorian and back, with the exact number of days from today. WIDGETS & APPLE WATCH • 7 Home Screen widgets, including Month and Week. Tick off tasks right from the widget. • 8 Lock Screen widgets in Persian or English: date, next holiday countdown, tasks left, next task and more. • Apple Watch app with complications and a Smart Stack widget. Events and shifts sync from iPhone. WORKS WITH YOUR APPS • Import .ics files from Google Calendar, Outlook and others, and review before saving. • Siri and Shortcuts: open a date or add an event, task or note. • Share any day with its holidays and events. DESIGN & PRIVACY • 10 accent colors, Light and Dark mode, iPhone and iPad layouts, VoiceOver and large text support. • Your events, tasks and notes stay on your device. Usage stats only if you opt in. Download Calvim free, the Persian calendar for your whole year. تقویم فارسی کالویم تقویم شمسی (جلالی) برای آیفون، آیپد و اپل واچ. رایگان، بدون تبلیغات، بدون حساب کاربری و بدون نیاز به اینترنت. تقویم و تعطیلات • تعطیلات رسمی ایران، همراه با تعطیلات ۱۴۰۶. • بیش از ۱۰۰۰ مناسبت: ملی و مذهبی، تاریخ قمری، روزهای جهانی و جشن‌هایی مثل نوروز، مهرگان و یلدا. هر دسته را روشن یا خاموش کنید. • شمارش معکوس نوروز با یادآور. • شروع هفته و روزهای تعطیل به انتخاب شما. امروز در یک نگاه • صفحه خانه: مناسبت‌ها، کارها و یادداشت‌های امروز، هفته شما و پیشرفت سال. کارهای عقب‌افتاده را با یک لمس به امروز بیاورید. کارها، یادداشت‌ها و یادآور • کار با تاریخ، ساعت و یادآور؛ دسته‌بندی عقب‌افتاده، امروز و پیش‌رو. یادداشت‌های مهم را سنجاق کنید. • رویداد شخصی شمسی یا میلادی: تمام‌روز یا ساعت‌دار، رنگ، تکرار، چند یادآور و تعطیلات شخصی. • جستجو در رویدادها، کارها و یادداشت‌ها. تقویم شیفت کاری • برای پرستاران، پزشکان و همه شیفت‌کارها: نوع شیفت، چرخه کاری، رنگ کردن روزها، خلاصه ماهانه و یادآور هر شیفت. تبدیل تاریخ • شمسی به میلادی و برعکس، با فاصله دقیق تا امروز. ویجت و اپل واچ • ۷ ویجت صفحه اصلی، از جمله ماه و هفته، با تیک زدن کارها از روی ویجت. • ۸ ویجت صفحه قفل به فارسی یا انگلیسی: تاریخ امروز، روزهای مانده تا تعطیلی بعدی، کارهای باقی‌مانده و کار بعدی. • اپل واچ با کامپلیکیشن و ویجت Smart Stack؛ رویدادها و شیفت‌ها از آیفون همگام می‌شوند. کنار بقیه برنامه‌ها • وارد کردن فایل ‎.ics از گوگل کلندر، اوت‌لوک و بقیه، با بررسی قبل از ذخیره. • Siri و Shortcuts و اشتراک‌گذاری هر روز. طراحی و حریم خصوصی • ۱۰ رنگ، حالت روشن و تیره، چیدمان آیپد و پشتیبانی از VoiceOver. • اطلاعات شما روی دستگاه خودتان می‌ماند؛ آمار استفاده فقط با اجازه شما. کالویم را رایگان نصب کنید؛ تقویم فارسی شما برای ۱۴۰۵ و ۱۴۰۶.

About

Defyx

This app provides secure and fast internet access with a focus on user privacy. It offers automatic setup, unlimited bandwidth, and end-to-end encryption to protect your data. The interface is clean and designed for ease of use, with features like Cloudflare DNS filtering for enhanced security.

Highlights
  • Secure, high-speed connections
  • Automatic smart onboarding
  • Unlimited bandwidth, no throttling
  • Automatic best server selection
  • End-to-end data encryption
  • Strict no-logs policy
  • Cloudflare DNS filtering
Features
Read full description

Crafted for secure internet access, designed for everyone, everywhere Defyx is a privacy-first VPN app with user-friendly interaction, unique visual feedback, and upcoming AI-based security insights. Browse safely and protect your personal data with Defyx — a fast, modern, and easy-to-use VPN that puts your privacy first. Whether you're on public Wi-Fi or want extra peace of mind online, Defyx keeps your connection encrypted and private. Key Features: - Secure, high-speed connections - No setup needed — everything works automatically via smart onboarding - Unlimited bandwidth with no throttling or hidden limits - Automatically selects the best server for your location - End-to-end encryption for your data, wherever you go - Strict no-logs policy — we never track or store your activity - Lightweight, ad-supported experience to keep it free and sustainable - Clean, minimal interface designed for everyone — from first-time users to privacy experts - Cloudflare DNS filtering to block malicious content - Optimized for iPhone (iPad and Mac support coming soon) - Open-source commitment — we’ll publish our source code to promote transparency Focused on Privacy and Simplicity Defyx is built to help users stay secure on untrusted or public networks. Whether you're working remotely, traveling, or simply browsing privately, Defyx makes online protection easy and accessible. Coming Soon: More connection options and VPN protocols for increased reliability on complex networks. Take control of your privacy — with one tap.

Screenshots

Calvim4 screens
Defyx4 screens

Verdict

The call

The clearest difference is in-app purchases: Calvim at none against Defyx's 5. Calvim also leads on ads (none vs shown) and rating (4.8 vs 4.4). Defyx's advantage is update cadence (every 10 days vs every 5 weeks). On price 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. Defyx sells 5 one-off in-app purchases. Calvim asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calvim holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Calvim has 491 ratings behind it against 55, so its average is the more settled of the two. Written reviews point the same way: 96% of Calvim's written reviews are positive against 81% of Defyx's.

UpkeepUpdate frequency

Calvim ships an update every 5 weeks, Defyx every 10 days. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.

Scorecard9 real differences · 1 level
Calvim versus Defyx: the parameters behind the verdict, then further details
ParameterCalvimDefyx
PriceFreeFree
Rating4.8 (491 ratings) — better4.4 (55 ratings)
Positive reviews96.1% of reviews — better81.3% of reviews
Number of ratings491 — better55
Update frequencyEvery 5 weeksEvery 10 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.3 — better17.0
Further details — not scored
Size84 MB172 MB
Age rating4+12+
DeveloperPouya Ahmad HeydariUnboundTech UG (haftungsbeschraenkt)

Customer experience

Calvim

All ratings491 ratings
Positive93.9%
Neutral3.1%
Negative3.1%
Written reviews77 reviews
Positive96.1%
Neutral1.3%
Negative2.6%

Defyx

All ratings55 ratings
Positive83.6%
Neutral5.5%
Negative10.9%
Written reviews16 reviews
Positive81.3%
Neutral0.0%
Negative18.8%

Bugs and requests

Calvim

Reported bugs

1 issue
  • Dark mode icon removed

Requested features

4 requests
  • Lunar calendar support
  • Widget support
  • Date display on app icon
  • More features

Defyx

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Calvim

No in-app purchases

5 purchases

Defyx

One-time5
  • Defyx Balance – 1 Credit$0.99
  • Defyx Balance – 2 Credits$1.99
  • Defyx Balance – 3 Credits$2.99
Show 2 more
  • Defyx Balance – 5 Credits$3.99
  • Defyx Balance – 10 Credits$8.99

Questions

Is Calvim free?
Calvim is free to download, with no in-app purchases.
Is Defyx free?
Defyx is free to download, with in-app purchases available.
Which has better reviews, Calvim or Defyx?
Calvim is rated higher. Calvim averages 4.8 out of 5 from 491 ratings, while Defyx averages 4.4 from 55 ratings.
Do Calvim or Defyx have ads?
Defyx shows ads; Calvim does not.
Which is updated more often, Calvim or Defyx?
Calvim ships an update every 5 weeks, and Defyx every 10 days. Most recently, Calvim was updated on November 8, 2026 and Defyx on November 5, 2026.

Other comparisons