# Calendar vs Read Master

The clearest difference is ads: Calendar at none against Read Master's shown. Read Master's advantage is update cadence (weekly vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Calendar sells 3 in-app purchases, starting at $1.99 per month and Read Master sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Calendar ships an update every 5 weeks, Read Master weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Calendar | Read Master |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (35 ratings)](https://appshunter.io/ios/app/calendar-schedule-planner/id1642199807/reviews)** | — |
| Number of ratings | **35** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | Freemium | — |
| Size | 302 MB | 40 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Planning Technologies LLC](https://appshunter.io/developer/1618240887) | [Adnan riaz](https://appshunter.io/developer/1874532257) |

## What reviewers say

### Calendar

[App page](https://appshunter.io/ios/app/calendar-schedule-planner/id1642199807)

Organize your day, week, and year with this comprehensive planner. It offers a daily planner, task management with subtasks, and note-taking capabilities. Syncs with popular calendar services and provides interactive widgets for quick access.

**Highlights:** Daily, weekly, monthly, yearly views, Task breakdown into subtasks, Voice and text note-taking, Syncs with Google, iCloud, Outlook, Interactive home screen widgets, App lock for privacy

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Access for a Month | $1.99 | per month |
| Full Access for a Year | $14.99 | per year |
| Full Access Forever | $29.99 | one-time |


### Read Master

[App page](https://appshunter.io/ios/app/read-master-pdf-p7m-docs/id6815143655)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $3.99 | per month |
| Premium Yearly | $22.99 | per year |
| Premium Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Calendar free?

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

### Is Read Master free?

Read Master is free to download, with in-app purchases available.

### Do Calendar or Read Master have ads?

Read Master shows ads; Calendar does not.

### Which is updated more often, Calendar or Read Master?

Calendar ships an update every 5 weeks, and Read Master weekly. Most recently, Calendar was updated on October 24, 2026 and Read Master on October 24, 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.*