# ZTK vs Universal AC Remote Control +

The clearest difference is in-app purchases: ZTK at none against Universal AC Remote Control +'s 25. ZTK also leads on rating (5.0 vs 4.6) and iOS requirement (12.0 vs 17.6). Universal AC Remote Control +'s advantage is update cadence (every 9 days vs every 12 months) and ratings volume (3.9K vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Universal AC Remote Control + sells 25 in-app purchases, starting at $3.99 per 7 days. ZTK asks for nothing beyond the download.

ZTK holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Universal AC Remote Control + has 3.9K ratings behind it against 2, so its average is the more settled of the two.

ZTK ships an update every 12 months, Universal AC Remote Control + every 9 days. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | ZTK | Universal AC Remote Control + |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ztk/id1562255375/reviews)** | [4.6 (3.9K ratings)](https://appshunter.io/ios/app/universal-ac-remote-control-plus/id6698875891/reviews) |
| Number of ratings | 2 | **3.9K** |
| Positive reviews | — | 20.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 9 days** |
| Monetization | **Free** | Subscription |
| Size | 168 MB | 105 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Beijing baiyijie Technology Co., Ltd](https://appshunter.io/developer/1562255467) | [JokDev Company](https://appshunter.io/developer/1632609652) |

## What reviewers say

### ZTK

[App page](https://appshunter.io/ios/app/ztk/id1562255375)

Manage your smart home appliances from a single application. Control devices remotely, monitor their status in real-time, and share access with family members for centralized intelligent living.

**Highlights:** Centralized management of smart appliances, Remote startup and control, Real-time status display, Family sharing of device access, Build an intelligent life

**Features:** macOS Compatibility

**In-app purchases:** none


### Universal AC Remote Control +

[App page](https://appshunter.io/ios/app/universal-ac-remote-control-plus/id6698875891)

Control your air conditioner directly from your smartphone. Adjust temperature, fan speed, and operating modes with an intuitive interface. Supports most AC models from various manufacturers, eliminating the need for a physical remote.

**Highlights:** Turn AC on/off, Adjust temperature, Set fan speed, Choose operating mode, Create work schedules, Supports most AC models

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

**In-app purchases (25)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Week | $3.99 | per 7 days |
| Premium | $3.99 | per 7 days |
| Premium Week | $5.99 | per 7 days |
| Premium week | $5.99 | per 7 days |
| Premium | $6.99 | per 7 days |
| Premium Week | $7.99 | per 7 days |
| Premium Week | $7.99 | per 7 days |
| Premium Week | $7.99 | per 7 days |
| Premium Month | $8.99 | per month |
| Premium Week | $9.99 | per 7 days |
| Premium week | $9.99 | per 7 days |
| Premium week | $11.99 | per 7 days |
| Premium Week | $12.99 | per 7 days |
| Premium Week | $12.99 | per 7 days |
| Premium Month | $24.99 | per month |
| Premium Year | $29.99 | per year |
| Premium | $29.99 | per year |
| Premium Year | $49.99 | per year |
| Lifetime Premium | $4.99 | one-time |
| Lifetime Premium | $9.99 | one-time |
| Lifetime Premium Access | $14.99 | one-time |
| Lifetime Premium Access | $24.99 | one-time |
| Lifetime Premium | $34.99 | one-time |
| Lifetime Premium | $44.99 | one-time |
| Lifetime Premium | $69.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Convenient control from phone
- 💡 Works with multiple AC units
- 👍 Intuitive interface
- 👍 Reliable performance

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔒 Privacy concerns with app permissions
- 💰 Unexpected recurring charges
- 🔒 Difficult to cancel subscription

**Reported bugs**

- App not opening or connecting to AC
- Settings not saving properly
- Incorrect temperature readings

**Requested features**

- Scheduling and automation options
- Remote access from outside home network
- Integration with smart home platforms
- Ability to control multiple ACs simultaneously


## Frequently asked questions

### Is ZTK free?

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

### Is Universal AC Remote Control + free?

Universal AC Remote Control + is free to download, with in-app purchases available.

### Which has better reviews, ZTK or Universal AC Remote Control +?

ZTK is rated higher. ZTK averages 5.0 out of 5 from 2 ratings, while Universal AC Remote Control + averages 4.6 from 3.9K ratings.

### Do ZTK or Universal AC Remote Control + have ads?

Neither ZTK nor Universal AC Remote Control + shows ads.

### Which is updated more often, ZTK or Universal AC Remote Control +?

ZTK ships an update every 12 months, and Universal AC Remote Control + every 9 days. Most recently, ZTK was updated on October 7, 2026 and Universal AC Remote Control + on October 14, 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.*