iENV vs Mars Hydro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iENV
This utility app connects UNI-T environmental meters to your smartphone via Bluetooth. It displays and records real-time data for temperature, humidity, noise, wind speed, light intensity, and rotation speed from compatible UNI-T devices.
- Bluetooth connectivity to UNI-T meters
- Real-time data display
- Data recording capabilities
- Supports multiple environmental parameters
- Compatible with various UNI-T meter models
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iENV is an App which connects UNI-T’s mini environmental series meters to a cell phone through Bluetooth. It is a free App which can be downloaded from App Store. iENV is able to display and record real-time temperature/humidity, noise level, wind speed, light intensity and rotate speed through UNI-T meters UT333BT, UT353BT, UT363BT, UT383BT, UT372D , UT325F, UT381A , and UT382A respectively.
Mars Hydro
Control your smart grow system with this app. Manage LED lights, ventilation, and monitor environmental data like CO2, temperature, and humidity for optimal plant growth. Automate your entire grow kit to mimic natural conditions.
- LED light control with timers and simulation
- Ventilation system management
- Complete grow kit automation via iHub
- Environmental data monitoring (CO2, temp, humidity, PPFD)
- Sunrise and sunset simulation
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The Mars Pro app is launched for a new intelligent control system your smart grow system and data monitoring, which includes the marhydro led grow light,inline fan,iHub. Welcome to experience the upgraded version through our website: www.mars-hydro.com Advanced Features: • LED Control: Manage your LED lights with ease, featuring on/off switches, timers, sunrise and sunset simulation, and PPFD (Photosynthetic Photon Flux Density) detection for optimal light management. • Ventilation System Control: Equipments can be controlled with timers, on/off switches, schedules, and cycles to maintain perfect air circulation. • Complete Automation: Use the iHub to program your entire grow kit, setting up automation programs that mimic natural environment grows. • Comprehensive Environmental Data: Monitor and store vital growing environment data, including CO2 levels, temperature, humidity, and PPFD, ensuring you have all the information needed for a successful grow.
Screenshots
Verdict
The clearest difference is rating: iENV at 3.1 against Mars Hydro's 2.6. iENV also leads on iOS requirement (12.0 vs 15.0). Mars Hydro's advantage is ratings volume (27 vs 7). On price, review sentiment, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
iENV holds the better App Store score, 3.1 against 2.6. Both are backed by a comparable volume of ratings — 7 and 27 respectively. Written reviews split almost evenly too, at 24% and 24% positive.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 22, 2026 and August 11, 2026 respectively.
| Parameter | iENV | Mars Hydro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (7 ratings) — better | 2.6 (27 ratings) |
| Positive reviews | 24.2% of reviews — better | 23.8% of reviews |
| Number of ratings | 7 | 27 — better |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 70 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | UNI-TREND TECHNOLOGY (CHINA) CO.,LTD. | MARS TRADING RCC, INC. |
Customer experience
iENV
Mars Hydro
In-app purchases
iENV
No in-app purchases
Mars Hydro
No in-app purchases
