# e vs heat it

The clearest difference is update cadence: heat it at every 3 weeks against e's every 3 months. e's advantage is iOS requirement (12.0 vs 14.0). 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.

e ships an update every 3 months, heat it every 3 weeks. The most recent releases landed on October 9, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | e | heat it |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (199 ratings)](https://appshunter.io/ios/app/heat-it/id1521640103/reviews)** |
| Number of ratings | — | **199** |
| Positive reviews | — | 90.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 31 MB | 67 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [exanic AG](https://appshunter.io/developer/385901168) | [Kamedi GmbH](https://appshunter.io/developer/1521640105) |

## What reviewers say

### e

[App page](https://appshunter.io/ios/app/e-mergency/id1108016754)

**Features:** macOS Compatibility

**In-app purchases:** none


### heat it

[App page](https://appshunter.io/ios/app/heat-it/id1521640103)

This app controls a smart medical device that uses concentrated heat to quickly relieve itching and pain from insect bites. It offers a chemical-free treatment option for the whole family, with adjustable settings for individual needs.

**Highlights:** Heat treatment for insect bites, Medically confirmed working principle, Chemical-free application, Adjustable treatment settings, Compact and portable design, Suitable for family use

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- ✨ Effective itch relief
- 🚀 Fast and easy to use
- 👍 Intuitive app interface
- 💡 Compact and portable design
- 💰 Economical alternative to creams

**What reviewers complain about**

- 🔥 Can feel hot or slightly painful
- 📱 Incompatible with some iPhone models (especially newer ones)
- 🐛 App can be cluttered or have minor issues
- ⚠️ Requires precise placement on bite
- ⏳ May require multiple treatments

**Reported bugs**

- Device not recognized by app on iPhone 15/15 Pro/Pro Max
- App crashes or has minor glitches
- Flashlight turns off during preheating
- USB-C version not working with iPhone 15

**Requested features**

- Improve compatibility with iPhone 15 series
- Add a bite-finding mode with low-temperature constant heat
- Allow the flashlight to stay on during preheating
- Consider a pause option after warm-up
- Add a countdown timer for re-application


## Frequently asked questions

### Is e free?

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

### Is heat it free?

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

### Do e or heat it have ads?

Neither e nor heat it shows ads.

### Which is updated more often, e or heat it?

e ships an update every 3 months, and heat it every 3 weeks. Most recently, e was updated on October 9, 2026 and heat it on October 18, 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.*