# TTLock vs DMSS

The clearest difference is review sentiment: DMSS at 89% against TTLock's 25%. DMSS also leads on rating (4.8 vs 2.8) and ads (none vs shown). TTLock's advantage is in-app purchases (none vs 12) and device support (4 vs 2). On price, update cadence and iOS requirement there is nothing between them.

Both are free to download. DMSS sells 12 one-off in-app purchases. TTLock asks for nothing beyond the download.

DMSS holds the better App Store score, 4.8 against 2.8. That said, the two scores are not equally well evidenced: DMSS has 79K ratings behind it against 523, 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 89% of DMSS's.

TTLock ships an update every 3 weeks, DMSS every 10 days. Both last shipped on October 15, 2026.

## The numbers

| Metric | TTLock | DMSS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (523 ratings)](https://appshunter.io/ios/app/ttlock/id1033046018/reviews) | **[4.8 (79K ratings)](https://appshunter.io/ios/app/dmss/id1493268178/reviews)** |
| Number of ratings | 523 | **79K** |
| Positive reviews | 25.4% of reviews | **89.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Best chart rank | — | **#168** |
| Size | 408 MB | 470 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Sciener Smart Technology](https://appshunter.io/developer/1360996795) | [DongBin](https://appshunter.io/developer/1757539852) |

## 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


### DMSS

[App page](https://appshunter.io/ios/app/dmss/id1493268178)

**Currently charting:** #168 Top Free · Lifestyle (US App Store)

Monitor your home or business security with real-time live video feeds and playback. Receive instant notifications for triggered alarms and manage access control. Share device access with family and utilize visual intercom features.

**Highlights:** Real-time live video streaming, Video playback by date and event, Instant alarm notifications, Device sharing with permissions, Alarm hub for various sensors, Visual intercom with remote unlock, Access control status and history

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 90-Day 4G Data Plan | $0.69 | one-time |
| 180 days unlimited data usage | $0.90 | one-time |
| Monthly Basic Plan | $3.49 | one-time |
| Monthly Basic Plan - Dual-lens | $6.90 | one-time |
| Monthly Pro Plan | $6.99 | one-time |
| Monthly 4G Data Plan | $10.00 | one-time |
| Monthly Pro Plan - Dual-lens | $13.90 | one-time |
| Annual Basic Plan | $34.99 | one-time |
| Annual Basic Plan - Dual-lens | $69.90 | one-time |
| Annual Pro Plan | $69.99 | one-time |
| Annual 4G Data Plan | $90.00 | one-time |
| Annual Pro Plan - Dual-lens | $139.00 | one-time |

**What reviewers like**

- 🚀 Excellent app for security camera monitoring
- 👍 Intuitive and easy to use interface
- 🔒 Real-time alerts and ability to view cameras anytime
- 🔍 Top-notch image quality and streaming speed
- 👍 User-friendly and reliable system

**What reviewers complain about**

- 🐛 Occasional connection issues and app crashes
- 🐛 Playback functionality can be unreliable or difficult to use
- 🐛 Notifications and alarm settings can be inconsistent
- 🐛 Time/date display issues, especially with daylight savings
- 🐛 Difficulty finding and reviewing specific recorded events

**Reported bugs**

- Inconsistent connection and playback issues
- Notifications not working as expected
- Time/date display problems
- Crashes and freezes when using certain features

**Requested features**

- Ability to turn cameras on/off individually within the app
- Faster forward/rewind options for playback
- Custom notification sounds
- More flexible scheduling and notification settings
- Improved integration with other smart home/security devices


## Frequently asked questions

### Is TTLock free?

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

### Is DMSS free?

DMSS is free to download, with in-app purchases available.

### Which has better reviews, TTLock or DMSS?

DMSS is rated higher. TTLock averages 2.8 out of 5 from 523 ratings, while DMSS averages 4.8 from 79K ratings.

### Do TTLock or DMSS have ads?

TTLock shows ads; DMSS does not.

### Which is updated more often, TTLock or DMSS?

TTLock ships an update every 3 weeks, and DMSS every 10 days. Most recently, TTLock was updated on October 15, 2026 and DMSS on October 15, 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.*