# Calvim vs Defyx

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.

Both are free to download. Defyx sells 5 one-off in-app purchases. Calvim asks for nothing beyond the download.

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.

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.

## The numbers

| Metric | Calvim | Defyx |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (491 ratings)](https://appshunter.io/ios/app/calvim-calendar/id6739218322/reviews)** | [4.4 (55 ratings)](https://appshunter.io/ios/app/defyx/id6746811872/reviews) |
| Number of ratings | **491** | 55 |
| Positive reviews | **96.1% of reviews** | 81.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 84 MB | 172 MB |
| Requires iOS | **15.3** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Pouya Ahmad Heydari](https://appshunter.io/developer/1784287878) | [UnboundTech UG (haftungsbeschraenkt)](https://appshunter.io/developer/1804424748) |

## What reviewers say

### Calvim

[App page](https://appshunter.io/ios/app/calvim-calendar/id6739218322)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and user-friendly
- 🌟 Awesome app
- 💯 Perfect app
- 🌟 Awesome update

**What reviewers complain about**

- 🌙 Lack of lunar calendar support
- 🔍 Minimal features

**Reported bugs**

- Dark mode icon removed

**Requested features**

- Lunar calendar support
- Widget support
- Date display on app icon
- More features


### Defyx

[App page](https://appshunter.io/ios/app/defyx/id6746811872)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Defyx Balance – 1 Credit | $0.99 | one-time |
| Defyx Balance – 2 Credits | $1.99 | one-time |
| Defyx Balance – 3 Credits | $2.99 | one-time |
| Defyx Balance – 5 Credits | $3.99 | one-time |
| Defyx Balance – 10 Credits | $8.99 | one-time |


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*