# Smart Mug vs Keep warm

The clearest difference is rating: Smart Mug at 3.0 against Keep warm's 1.9. Smart Mug also leads on iOS requirement (9.0 vs 11.0). Keep warm's advantage is ratings volume (14 vs 1) and update cadence (weekly vs every 2 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Smart Mug holds the better App Store score, 3.0 against 1.9. That said, the two scores are not equally well evidenced: Keep warm has 14 ratings behind it against 1, so its average is the more settled of the two.

Smart Mug ships an update every 2 weeks, Keep warm weekly. The most recent releases landed on June 1, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Smart Mug | Keep warm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/smart-mug/id6444671131/reviews)** | [1.9 (14 ratings)](https://appshunter.io/ios/app/keep-warm/id6449612773/reviews) |
| Number of ratings | 1 | **14** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 32 MB | 2 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zhuhai Luckyman Technology Co.,ltd.](https://appshunter.io/developer/1656022430) | [Shenzhen Mijia Investment Co.,Ltd](https://appshunter.io/developer/1570759215) |

## What reviewers say

### Smart Mug

[App page](https://appshunter.io/ios/app/smart-mug/id6444671131)

Control your smart mug's temperature remotely. Monitor power and usage history, set desired temperatures, and schedule heating times for your beverages.

**Highlights:** Remote temperature control, Power status monitoring, Usage history tracking, Scheduled heating, Temperature presets

**Features:** macOS Compatibility

**In-app purchases:** none


### Keep warm

[App page](https://appshunter.io/ios/app/keep-warm/id6449612773)

Control the heating temperature of your smart socks via Bluetooth from your smartphone. This app allows for seamless pairing and temperature adjustment, enhancing your comfort and quality of life.

**Highlights:** Bluetooth pairing, Temperature control, Smart life integration, Improved comfort

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart Mug free?

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

### Is Keep warm free?

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

### Which has better reviews, Smart Mug or Keep warm?

Smart Mug is rated higher. Smart Mug averages 3.0 out of 5 from 1 ratings, while Keep warm averages 1.9 from 14 ratings.

### Do Smart Mug or Keep warm have ads?

Neither Smart Mug nor Keep warm shows ads.

### Which is updated more often, Smart Mug or Keep warm?

Smart Mug ships an update every 2 weeks, and Keep warm weekly. Most recently, Smart Mug was updated on June 1, 2026 and Keep warm on September 21, 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.*