# Cally Calendar vs PDFOne

The clearest difference is price: Cally Calendar at Free against PDFOne's $2.99. Cally Calendar also leads on update cadence (every 2 days vs every 4 days). PDFOne's advantage is ads (none vs shown). On in-app purchases, device support and iOS requirement there is nothing between them.

Cally Calendar is free to download; PDFOne costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Cally Calendar ships an update every 2 days, PDFOne every 4 days. The most recent releases landed on October 25, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Cally Calendar | PDFOne |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cally-calendar/id6803162131/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 4 days |
| Monetization | Ad-supported | — |
| Size | 5 MB | 9 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Chathushka Rodrigo](https://appshunter.io/developer/1886060202) | [ANTONIO PADALINO](https://appshunter.io/developer/6798513902) |

## What reviewers say

### Cally Calendar

[App page](https://appshunter.io/ios/app/cally-calendar/id6803162131)

See your upcoming meetings and their progress directly on your iPhone's Lock Screen. It intelligently switches between work and personal calendars based on your Focus modes and provides quick access to join calls.

**Highlights:** Lock Screen meeting display, Focus mode integration, Live timeline view, Double-booking alerts, One-tap call joining, On-device data processing

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

**In-app purchases:** none


### PDFOne

[App page](https://appshunter.io/ios/app/pdfone/id6806627749)

**In-app purchases:** none


## Frequently asked questions

### Is Cally Calendar free?

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

### Is PDFOne free?

PDFOne costs $2.99, with no in-app purchases.

### Do Cally Calendar or PDFOne have ads?

Cally Calendar shows ads; PDFOne does not.

### Which is updated more often, Cally Calendar or PDFOne?

Cally Calendar ships an update every 2 days, and PDFOne every 4 days. Most recently, Cally Calendar was updated on October 25, 2026 and PDFOne on October 18, 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.*