# iWarmU vs JotNotes

The clearest difference is update cadence: JotNotes at weekly against iWarmU's every 6 months. iWarmU's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

iWarmU ships an update every 6 months, JotNotes weekly. The most recent releases landed on October 4, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | iWarmU | JotNotes |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.1 (72 ratings)](https://appshunter.io/ios/app/iwarmu/id1576856224/reviews)** | — |
| Number of ratings | **72** | — |
| Positive reviews | 20.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Free | — |
| Size | 4 MB | 17 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shenzhen Zhongzhi Liancheng Technology Co., Ltd.](https://appshunter.io/developer/1457957513) | [KANG-CHIH HSU](https://appshunter.io/developer/1701388864) |

## What reviewers say

### iWarmU

[App page](https://appshunter.io/ios/app/iwarmu/id1576856224)

Control your warm clothing and socks with this app. It automatically searches for and connects to your devices, offering precise temperature adjustments and quick warming or timing functions.

**Highlights:** Automatic device search and connection, 3 temperature levels, Stepless temperature control, Quick warming settings, Timing settings

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

**In-app purchases:** none


### JotNotes

[App page](https://appshunter.io/ios/app/jotnotes-encrypted-notes/id6794551331)

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

**In-app purchases:** none


## Frequently asked questions

### Is iWarmU free?

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

### Is JotNotes free?

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

### Do iWarmU or JotNotes have ads?

Neither iWarmU nor JotNotes shows ads.

### Which is updated more often, iWarmU or JotNotes?

iWarmU ships an update every 6 months, and JotNotes weekly. Most recently, iWarmU was updated on October 4, 2026 and JotNotes on September 22, 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.*