# Shift Calendar vs Project Jar

Shift Calendar and Project Jar are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Shift Calendar sells 4 in-app purchases, starting at $4.99 per 7 days and Project Jar sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Shift Calendar | Project Jar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Size | 15 MB | 48 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [EMRE KOTUN](https://appshunter.io/developer/1796678115) | [Islam Seisembay](https://appshunter.io/developer/1505964950) |

## What reviewers say

### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar-work-schedules/id6756643618)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $4.99 | per 7 days |
| Monthly Pro | $5.99 | per month |
| Yearly Premium Access | $29.99 | per year |
| Lifetime Pro | $59.99 | one-time |


### Project Jar

[App page](https://appshunter.io/ios/app/project-jar-idea-randomizer/id6757163407)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Voice Transcription/Parser | $1.99 | per month |
| Revival | $0.99 | one-time |


## Frequently asked questions

### Is Shift Calendar free?

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

### Is Project Jar free?

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

### Do Shift Calendar or Project Jar have ads?

Neither Shift Calendar nor Project Jar shows ads.

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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.*