# CheckSolo vs Calendar.online

The clearest difference is device support: Calendar.online at 3 against CheckSolo's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CheckSolo | Calendar.online |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (40 ratings)](https://appshunter.io/ios/app/calendaronline/id1607856409/reviews)** |
| Number of ratings | — | **40** |
| Positive reviews | — | 94.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 13 MB | 67 MB |
| Requires iOS | **14.1** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [CheckSolo DAC](https://appshunter.io/developer/1077675070) | [Kalender.digital](https://appshunter.io/developer/1584623403) |

## What reviewers say

### CheckSolo

[App page](https://appshunter.io/ios/app/checksolo/id1077675341)

**Features:** macOS Compatibility

**In-app purchases:** none


### Calendar.online

[App page](https://appshunter.io/ios/app/calendaronline/id1607856409)

This free online calendar facilitates team collaboration with shareable access links. Manage permissions, set passwords, and customize views for seamless group scheduling. Access your calendar from any device with a simple bookmark.

**Highlights:** Shareable access links, Role-based permissions (admin, editor, reader), Password protection for links, Customizable access link views, Dashboard for managing calendars, Device bookmarking

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

**In-app purchases:** none


## Frequently asked questions

### Is CheckSolo free?

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

### Is Calendar.online free?

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

### Do CheckSolo or Calendar.online have ads?

Neither CheckSolo nor Calendar.online shows ads.

### Which is updated more often, CheckSolo or Calendar.online?

CheckSolo ships an update every 2 months, and Calendar.online every 2 months. Most recently, CheckSolo was updated on November 2, 2026 and Calendar.online on November 3, 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.*