# VIVOSUN vs IR Sync

The clearest difference is ratings volume: VIVOSUN at 8.5K against IR Sync's 1. IR Sync's advantage is rating (5.0 vs 4.7). 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.

IR Sync holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: VIVOSUN has 8.5K ratings behind it against 1, so its average is the more settled of the two.

VIVOSUN ships an update every 11 days, IR Sync fortnightly. The most recent releases landed on October 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | VIVOSUN | IR Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (8.5K ratings)](https://appshunter.io/ios/app/vivosun/id1600813756/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ir-sync/id6771472994/reviews)** |
| Number of ratings | **8.5K** | 1 |
| Positive reviews | 63.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Fortnightly |
| Monetization | Free | Free |
| Size | 254 MB | 54 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [VIVOSUN INC](https://appshunter.io/developer/1600813758) | [SoCal Dab Tools, LLC](https://appshunter.io/developer/1891379874) |

## What reviewers say

### VIVOSUN

[App page](https://appshunter.io/ios/app/vivosun/id1600813756)

Automate and simplify plant care with this app. Monitor environmental conditions, manually control grow equipment, and track plant progress. It helps optimize growth and manage schedules for a better growing experience.

**Highlights:** Real-time environmental monitoring, Manual control of grow devices, Automated grow recipes, Climate tracking and insights, Growth logging and reminders, Secure plant diary with photos

**Features:** macOS Compatibility, Apple Wallet, SharePlay

**In-app purchases:** none

**What reviewers like**

- 🚀 Seamless connectivity
- 👍 Intuitive app interface
- 🔍 Comprehensive environment monitoring
- 💡 Helpful journal/logging feature
- 🛒 Convenient in-app purchasing

**What reviewers complain about**

- 🐛 Connectivity issues and disconnects
- 🔧 Confusing configuration and automation settings
- 🕰️ Inconsistent sync between app and hardware
- 🔍 Lack of advanced customization options
- 🔌 Compatibility issues with newer devices

**Reported bugs**

- Firmware update failures
- Inconsistent data display and syncing
- Recipes not saving correctly
- In-app purchasing problems

**Requested features**

- Add VPD control and automation
- Improve recipe/schedule management
- Implement a dashboard widget for quick monitoring
- Allow moving plants between gardens
- Enhance dark mode and UI customization


### IR Sync

[App page](https://appshunter.io/ios/app/ir-sync/id6771472994)

This app connects to precision temperature monitors via Bluetooth to display real-time readings and control device settings. Save custom presets, set smart alerts, and review session history. It also features a QR scanner for loading manufacturer profiles.

**Highlights:** Real-time temperature monitoring, Customizable presets, Smart alerts and notifications, Session history logging, QR scanner for profiles, Device settings synchronization

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

**In-app purchases:** none


## Frequently asked questions

### Is VIVOSUN free?

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

### Is IR Sync free?

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

### Which has better reviews, VIVOSUN or IR Sync?

IR Sync is rated higher. VIVOSUN averages 4.7 out of 5 from 8.5K ratings, while IR Sync averages 5.0 from 1 ratings.

### Do VIVOSUN or IR Sync have ads?

Neither VIVOSUN nor IR Sync shows ads.

### Which is updated more often, VIVOSUN or IR Sync?

VIVOSUN ships an update every 11 days, and IR Sync fortnightly. Most recently, VIVOSUN was updated on October 17, 2026 and IR Sync on October 1, 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.*