# Kidney Notes for Cats vs Lull for BedJet

The clearest difference is in-app purchases: Lull for BedJet at none against Kidney Notes for Cats's 2. Lull for BedJet also leads on update cadence (every 2 days vs weekly). Kidney Notes for Cats's advantage is iOS requirement (16.4 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Kidney Notes for Cats sells 2 in-app purchases, starting at $4.99 per month. Lull for BedJet asks for nothing beyond the download.

Kidney Notes for Cats ships an update weekly, Lull for BedJet every 2 days. Both last shipped on November 6, 2026.

## The numbers

| Metric | Kidney Notes for Cats | Lull for BedJet |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (12 ratings)](https://appshunter.io/ios/app/lull-for-bedjet/id6822096696/reviews)** |
| Number of ratings | — | **12** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | — | Free |
| Size | 36 MB | 2 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [STEELSTYLE K.K.](https://appshunter.io/developer/1547579860) | [Rohan Kanjani](https://appshunter.io/developer/6789012160) |

## What reviewers say

### Kidney Notes for Cats

[App page](https://appshunter.io/ios/app/kidney-notes-for-cats/id6803513033)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム（月額） | $4.99 | per month |
| プレミアム（年額） | $34.99 | per year |


### Lull for BedJet

[App page](https://appshunter.io/ios/app/lull-for-bedjet/id6822096696)

Control your BedJet 3 to create a personalized overnight climate. Schedule temperature changes for warming, cooling, and waking, with a simple interface that saves to the device. Supports dual users and operates without a constant phone connection.

**Highlights:** Customizable overnight climate schedules, Phase-based temperature and fan control, Automatic schedule saving to device, Dual user support for shared beds, Bluetooth connectivity, No account or cloud required

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

**In-app purchases:** none


## Frequently asked questions

### Is Kidney Notes for Cats free?

Kidney Notes for Cats is free to download, with in-app purchases available.

### Is Lull for BedJet free?

Lull for BedJet is free to download, with no in-app purchases.

### Do Kidney Notes for Cats or Lull for BedJet have ads?

Neither Kidney Notes for Cats nor Lull for BedJet shows ads.

### Which is updated more often, Kidney Notes for Cats or Lull for BedJet?

Kidney Notes for Cats ships an update weekly, and Lull for BedJet every 2 days. Most recently, Kidney Notes for Cats was updated on November 6, 2026 and Lull for BedJet on November 6, 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.*