# To vs SiCal

The clearest difference is in-app purchases: SiCal at none against To's 5. SiCal also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence there is nothing between them.

Both are free to download. To sells 5 in-app purchases, starting at $0.99 per month. SiCal asks for nothing beyond the download.

To ships an update fortnightly, SiCal every 9 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | To | SiCal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sical/id6779240309/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | — | Free |
| Size | 105 MB | 33 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hyunsoo Park](https://appshunter.io/developer/1070475435) | [Mitchell May](https://appshunter.io/developer/1540640823) |

## What reviewers say

### To

[App page](https://appshunter.io/ios/app/to-do-calendar/id6639620385)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Monthly | $0.99 | per month |
| Small Credit Pack | $0.99 | one-time |
| Medium Credit Pack | $4.99 | one-time |
| Large Credit Pack | $9.99 | one-time |
| Lifetime Plan | $29.99 | one-time |


### SiCal

[App page](https://appshunter.io/ios/app/sical/id6779240309)

This private calendar app utilizes a decentralized network for secure storage and management of your schedule. It allows for event creation, organization across multiple calendars, and import of existing files, all without requiring a traditional account. Your data is secured by a recovery phrase for easy restoration and control.

**Highlights:** Decentralized calendar storage, Event creation and organization, Multiple calendar management, ICS file import, Event reminders and alerts, Restore access with recovery phrase

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

**In-app purchases:** none


## Frequently asked questions

### Is To free?

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

### Is SiCal free?

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

### Do To or SiCal have ads?

To shows ads; SiCal does not.

### Which is updated more often, To or SiCal?

To ships an update fortnightly, and SiCal every 9 days. Most recently, To was updated on October 24, 2026 and SiCal on October 25, 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.*