# Timer calendar vs Clock IO

The clearest difference is in-app purchases: Clock IO at none against Timer calendar's 1. Clock IO also leads on update cadence (every 2 days vs every 5 weeks). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Timer calendar sells 1 one-off in-app purchase. Clock IO asks for nothing beyond the download.

Timer calendar ships an update every 5 weeks, Clock IO every 2 days. The most recent releases landed on September 4, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Timer calendar | Clock IO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/clock-io-time-tracking-tool/id6739621156/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 95.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 6 MB | 61 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Yongjun Lee](https://appshunter.io/developer/1550041806) | [Connect Fit Co., Ltd.](https://appshunter.io/developer/1462256083) |

## What reviewers say

### Timer calendar

[App page](https://appshunter.io/ios/app/timer-calendar-records-timer/id1550041804)

Track your time spent on various activities like working out or studying. Visualize your progress with daily, weekly, and monthly reports. Gain insights into your time management habits.

**Highlights:** Time recording for activities, Calendar integration, Daily progress reports, Weekly progress reports, Monthly progress reports, Time measurement

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


### Clock IO

[App page](https://appshunter.io/ios/app/clock-io-time-tracking-tool/id6739621156)

This tool offers intelligent time tracking for businesses, ensuring accurate hours with location verification. It provides insights into team productivity and streamlines project management for dynamic work environments.

**Highlights:** Location-verified time tracking (GPS/WiFi), Intelligent project tagging, Seamless team management, Advanced team analytics, Real-time team collaboration, Home screen widget

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

**In-app purchases:** none


## Frequently asked questions

### Is Timer calendar free?

Timer calendar is free to download, with in-app purchases available.

### Is Clock IO free?

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

### Do Timer calendar or Clock IO have ads?

Neither Timer calendar nor Clock IO shows ads.

### Which is updated more often, Timer calendar or Clock IO?

Timer calendar ships an update every 5 weeks, and Clock IO every 2 days. Most recently, Timer calendar was updated on September 4, 2026 and Clock IO on September 6, 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.*