# TTLock vs Zynch 2

The clearest difference is ads: Zynch 2 at none against TTLock's shown. TTLock's advantage is update cadence (every 3 weeks vs every 4 months) and device support (4 vs 2). On price 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 ships an update every 3 weeks, Zynch 2 every 4 months. The most recent releases landed on October 16, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | TTLock | Zynch 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (523 ratings)](https://appshunter.io/ios/app/ttlock/id1033046018/reviews)** | — |
| Number of ratings | **523** | — |
| Positive reviews | 25.3% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Ad-supported | — |
| Size | 408 MB | 80 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hangzhou Sciener Smart Technology](https://appshunter.io/developer/1360996795) | [Grupo Iusa, S.A. de C.V.](https://appshunter.io/developer/1101957848) |

## 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


### Zynch 2

[App page](https://appshunter.io/ios/app/zynch-2/id6769100429)

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

**In-app purchases:** none


## Frequently asked questions

### Is TTLock free?

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

### Is Zynch 2 free?

Zynch 2 is free to download, with no in-app purchases.

### Do TTLock or Zynch 2 have ads?

TTLock shows ads; Zynch 2 does not.

### Which is updated more often, TTLock or Zynch 2?

TTLock ships an update every 3 weeks, and Zynch 2 every 4 months. Most recently, TTLock was updated on October 16, 2026 and Zynch 2 on October 8, 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.*