# CareRhythm vs ShiftKal

The clearest difference is in-app purchases: CareRhythm at none against ShiftKal's 6. CareRhythm also leads on iOS requirement (15.0 vs 18.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ShiftKal sells 6 in-app purchases, starting at $3.99 per month. CareRhythm asks for nothing beyond the download.

CareRhythm ships an update fortnightly, ShiftKal every 10 days. The most recent releases landed on September 28, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | CareRhythm | ShiftKal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Size | 12 MB | 74 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Frank Curtis](https://appshunter.io/developer/1896609389) | [Hung Le Ngoc](https://appshunter.io/developer/1893907037) |

## What reviewers say

### CareRhythm

[App page](https://appshunter.io/ios/app/carerhythm/id6768840347)

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

**In-app purchases:** none


### ShiftKal

[App page](https://appshunter.io/ios/app/shiftkal-shift-work-calendar/id6784589897)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $3.99 | per month |
| Yearly | $12.99 | per year |
| Scan Credit | $0.99 | one-time |
| Scan Credit | $1.99 | one-time |
| Scan Credit 10 | $2.99 | one-time |
| Lifetime | $39.99 | one-time |


## Frequently asked questions

### Is CareRhythm free?

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

### Is ShiftKal free?

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

### Do CareRhythm or ShiftKal have ads?

Neither CareRhythm nor ShiftKal shows ads.

### Which is updated more often, CareRhythm or ShiftKal?

CareRhythm ships an update fortnightly, and ShiftKal every 10 days. Most recently, CareRhythm was updated on September 28, 2026 and ShiftKal on October 6, 2026.

---

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