# Pet Zero vs CMS1600

The clearest difference is iOS requirement: CMS1600 at 11.0 against Pet Zero's 14.0. On price, update cadence, ads 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.

Pet Zero ships an update every 7 months, CMS1600 every 9 months. The most recent releases landed on September 20, 2026 and August 20, 2026 respectively.

## The numbers

| Metric | Pet Zero | CMS1600 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.5K ratings)](https://appshunter.io/ios/app/pet-zero/id1507536028/reviews)** | — |
| Number of ratings | **3.5K** | — |
| Positive reviews | 51.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 9 months |
| Monetization | Free | — |
| Size | 189 MB | 7 MB |
| Requires iOS | 14.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [泽明 任](https://appshunter.io/developer/1270084552) | [Contec Medical Systems Co., Ltd.](https://appshunter.io/developer/908936493) |

## What reviewers say

### Pet Zero

[App page](https://appshunter.io/ios/app/pet-zero/id1507536028)

This app facilitates communication and remote management of pets through smart feeders. It allows for timed and manual feeding, real-time video monitoring, two-way audio, and notifications for low food levels.

**Highlights:** Timed pet feeding, Remote manual feeding, Low food notifications, Real-time video monitoring, Two-way audio communication, Feeding record tracking

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Reliable and consistent
- 🔒 Secure connection
- 👍 Easy to use app
- 👍 Convenient for pet owners
- 👍 Helpful for managing pet's diet

**What reviewers complain about**

- 🐛 Connectivity issues
- 🐛 Notifications not working
- 🐛 Frequent sign-outs
- 🐛 Inconsistent feeding
- 🐛 Difficulty updating network information

**Reported bugs**

- Feeding schedule not saving
- Login button not working
- Portion size issues for larger pets
- Feeding history not recorded during sign-outs

**Requested features**

- Vacation mode to pause feeding
- Delay option for multiple feeders
- AM/PM time selection
- Siri Shortcuts integration
- Confirmation for manual feeding


### CMS1600

[App page](https://appshunter.io/ios/app/cms1600-vet/id6474657919)

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

**In-app purchases:** none


## Frequently asked questions

### Is Pet Zero free?

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

### Is CMS1600 free?

CMS1600 is free to download, with no in-app purchases.

### Do Pet Zero or CMS1600 have ads?

Neither Pet Zero nor CMS1600 shows ads.

### Which is updated more often, Pet Zero or CMS1600?

Pet Zero ships an update every 7 months, and CMS1600 every 9 months. Most recently, Pet Zero was updated on September 20, 2026 and CMS1600 on August 20, 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.*