# TTLock vs Room Heat

The clearest difference is rating: TTLock at 2.9 against Room Heat's 1.8. TTLock also leads on update cadence (every 3 weeks vs every 9 months) and ratings volume (547 vs 9). Room Heat's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, review sentiment and in-app purchases there is nothing between them.

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

TTLock holds the better App Store score, 2.9 against 1.8. That said, the two scores are not equally well evidenced: TTLock has 547 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 25% of TTLock's written reviews are positive against 22% of Room Heat's.

TTLock ships an update every 3 weeks, Room Heat every 9 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | TTLock | Room Heat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (547 ratings)](https://appshunter.io/ios/app/ttlock/id1033046018/reviews)** | [1.8 (9 ratings)](https://appshunter.io/ios/app/room-heat/id1265007865/reviews) |
| Number of ratings | **547** | 9 |
| Positive reviews | **25.3% of reviews** | 22.2% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 9 months |
| Monetization | Ad-supported | **Free** |
| Size | 371 MB | 20 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Sciener Smart Technology](https://appshunter.io/developer/1360996795) | [海梅 陈](https://appshunter.io/developer/1265007864) |

## What reviewers say

### TTLock

[App page](https://appshunter.io/ios/app/ttlock/id1033046018)

Unlock your doors using your smartphone via Bluetooth. This app requires compatible hardware to function. Contact support directly within the app for any inquiries.

**Highlights:** Unlock doors via Bluetooth, Requires compatible hardware, In-app support contact, Phone-based access control

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Works well
- 👍 Easy to use
- 💡 Lots of features
- 🔒 Secure access
- 🤖 Integrates with Alexa

**What reviewers complain about**

- 🐛 Connectivity issues
- 🔋 Battery drain problems
- 🤯 Confusing instructions
- 🤖 Alexa integration not reliable
- 🤔 Can't see lock status

**Reported bugs**

- App crashes after updates
- Can't delete old locks from app
- Fingerprint scanner not working
- Remote unlock not functioning
- Passcode changes not syncing

**Requested features**

- Show lock/unlock status in app
- Add proximity unlock feature
- Improve Alexa integration
- Allow minute-level passcode scheduling
- Provide better customer support


### Room Heat

[App page](https://appshunter.io/ios/app/room-heat/id1265007865)

Control your room's heating remotely. This application allows you to manage your heating system from your smartphone, ensuring comfort and potentially saving energy.

**Highlights:** Remote heating control, Smartphone management, Comfort optimization, Energy saving potential

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Works well remotely
- 👍 Controls work fine once connected
- 👍 Good multi-zone thermostat control
- 👍 Remote control for holiday
- 👍 Works well

**What reviewers complain about**

- 🐛 App is buggy
- 🐛 Minimal user input
- 🐛 App struggles to connect
- 🐛 App is useless
- 🐛 Very hard to add thermostat

**Reported bugs**

- App struggles to connect after recent update
- App is beyond buggy
- App is pretty useless
- App doesn't want to operate with Wi-Fi
- App needs some updates

**Requested features**

- Synchronize time of all thermostats with one click
- Add Alexa or IFTTT interaction
- Add timer for automatic on/off from phone
- Add different modes like 'home', 'vacation', 'work'
- Support for Italian language


## Frequently asked questions

### Is TTLock free?

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

### Is Room Heat free?

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

### Which has better reviews, TTLock or Room Heat?

TTLock is rated higher. TTLock averages 2.9 out of 5 from 547 ratings, while Room Heat averages 1.8 from 9 ratings.

### Do TTLock or Room Heat have ads?

TTLock shows ads; Room Heat does not.

### Which is updated more often, TTLock or Room Heat?

TTLock ships an update every 3 weeks, and Room Heat every 9 months. Most recently, TTLock was updated on October 24, 2026 and Room Heat on October 24, 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.*