# ContextStacker vs LockCal

The clearest difference is in-app purchases: LockCal at none against ContextStacker's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. ContextStacker sells 2 in-app purchases, starting at $99.00 per year. LockCal asks for nothing beyond the download.

## The numbers

| Metric | ContextStacker | LockCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 days | — |
| Size | 7 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [鹏源 邱](https://appshunter.io/developer/1042192961) | [Vladimir Popov](https://appshunter.io/developer/6791445377) |

## What reviewers say

### ContextStacker

[App page](https://appshunter.io/ios/app/contextstacker/id6774051551)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Annual | $99.00 | per year |
| Business Annual | $199.00 | per year |


### LockCal

[App page](https://appshunter.io/ios/app/lockcal/id6794340782)

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

**In-app purchases:** none


## Frequently asked questions

### Is ContextStacker free?

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

### Is LockCal free?

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

### Do ContextStacker or LockCal have ads?

Neither ContextStacker nor LockCal shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*