# Codeclock vs ARK APP IIT (ISM)

The clearest difference is update cadence: ARK APP IIT (ISM) at fortnightly against Codeclock's every 3 months. Codeclock's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Codeclock ships an update every 3 months, ARK APP IIT (ISM) fortnightly. The most recent releases landed on October 3, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Codeclock | ARK APP IIT (ISM) |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 46 MB | 39 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Naman Anand](https://appshunter.io/developer/1682061807) | [IIT ISM](https://appshunter.io/developer/1840894536) |

## What reviewers say

### Codeclock

[App page](https://appshunter.io/ios/app/codeclock-coding-calendar/id6447638088)

This app helps competitive programmers track coding contests from major platforms. It provides a comprehensive schedule, allows users to set reminders, and integrates with their device's calendar to prevent missed events.

**Highlights:** Comprehensive contest schedule, Support for major platforms (Codechef, Codeforces, LeetCode), Set contest reminders, Add contests to device calendar, User-friendly interface

**In-app purchases:** none


### ARK APP IIT (ISM)

[App page](https://appshunter.io/ios/app/ark-app-iit-ism/id6779619294)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Codeclock free?

Codeclock is free to download, with no in-app purchases.

### Is ARK APP IIT (ISM) free?

ARK APP IIT (ISM) is free to download, with no in-app purchases.

### Do Codeclock or ARK APP IIT (ISM) have ads?

Neither Codeclock nor ARK APP IIT (ISM) shows ads.

### Which is updated more often, Codeclock or ARK APP IIT (ISM)?

Codeclock ships an update every 3 months, and ARK APP IIT (ISM) fortnightly. Most recently, Codeclock was updated on October 3, 2026 and ARK APP IIT (ISM) on September 21, 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.*