# TTLock vs PETJC

The clearest difference is rating: TTLock at 2.9 against PETJC's 2.0. TTLock also leads on review sentiment (25% vs 0%) and ratings volume (547 vs 4). PETJC's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, update cadence 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 2.0. That said, the two scores are not equally well evidenced: TTLock has 547 ratings behind it against 4, 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 0% of PETJC's.

TTLock ships an update every 3 weeks, PETJC monthly. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | TTLock | PETJC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (547 ratings)](https://appshunter.io/ios/app/ttlock/id1033046018/reviews)** | [2.0 (4 ratings)](https://appshunter.io/ios/app/petjc/id1557812143/reviews) |
| Number of ratings | **547** | 4 |
| Positive reviews | **25.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Ad-supported | **Free** |
| Size | 371 MB | 73 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) | [Shenzhen Juchong Industrial Co., Ltd](https://appshunter.io/developer/1557812145) |

## 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


### PETJC

[App page](https://appshunter.io/ios/app/petjc/id1557812143)

This app offers a comprehensive platform for pet owners, integrating smart pet device control, life logging, and knowledge sharing. It helps manage pet health, track growth, and connect with other pet enthusiasts.

**Highlights:** Smart pet device management, Pet life logging and sharing, Scientific pet care knowledge, Health tracking and feeding advice, Pet owner interaction and sharing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TTLock free?

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

### Is PETJC free?

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

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

TTLock is rated higher. TTLock averages 2.9 out of 5 from 547 ratings, while PETJC averages 2.0 from 4 ratings.

### Do TTLock or PETJC have ads?

TTLock shows ads; PETJC does not.

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

TTLock ships an update every 3 weeks, and PETJC monthly. Most recently, TTLock was updated on October 24, 2026 and PETJC on October 23, 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.*