iENV vs Mars Legacy
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 Legacy
Control and configure your indoor grow lights remotely. Automate growth cycles with custom timers, simulate sunrise and sunset, and manage multiple lights independently from a single device. Compatible with the Mars Hydro Smart Grow System.
- Remote LED light control
- Adjustable light intensity
- Automatic growth cycle programming
- Sunrise/sunset simulation
- Wireless multi-light control
- Independent lighting group management
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The Mars Hydro app is launched to build a smart, simplified, frontier a ccess for growers to a more manageable grow project, supporting m obile control and growth programs configuration, compatible with Ma rs Hydro Smart Grow System at: www.mars-hydro.com *Easily turn ON/OFF your LED grow lights and adjust the intensity with j ust a few clicks. *Precisely arrange time triggers to achieve automatic growth cycles an d simulation of sunrise and sunset. *Wireless control of multiple LED grow lights via one device at the sam e time. *Different lighting groups are available for independent management, which enables simultaneous monitor on paralleled grows. ...More to be launched
Screenshots
Verdict
The clearest difference is rating: iENV at 3.1 against Mars Legacy's 1.3. iENV also leads on review sentiment (26% vs 12%). Mars Legacy's advantage is ratings volume (71 vs 7) and iOS requirement (13.0 vs 15.0). On price, update cadence, ads and in-app purchases 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 1.3. That said, the two scores are not equally well evidenced: Mars Legacy has 71 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 26% of iENV's written reviews are positive against 12% of Mars Legacy's.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | iENV | Mars Legacy |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (7 ratings) — better | 1.3 (71 ratings) |
| Positive reviews | 25.7% of reviews — better | 12.2% of reviews |
| Number of ratings | 7 | 71 — better |
| Update frequency | Monthly | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 55 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | UNI-TREND TECHNOLOGY (CHINA) CO.,LTD. | MARS TRADING RCC, INC. |
Customer experience
iENV
Mars Legacy
Bugs and requests
iENV
Not enough reviews yet to summarise bugs or requests.
Mars Legacy
Reported bugs
20 issues- App cannot detect Bluetooth despite phone detecting it
- Timer settings do not execute at scheduled times
- Scenes and automation groups fail to work
- WiFi connection drops frequently and reconnection fails
- Light brightness changes unexpectedly without user input
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- Humidity readings display unrealistic fantasy values
- App crashes and loses all device/account data
- Login verification codes not received
- Sunrise/sunset mode ignores brightness settings and forces 100%
- Time selection interface is confusing and unreliable
- Fan disconnects from app during use
- PPFD settings reset unexpectedly
- App update broke existing functionality
- Device not detected during initial setup
- Password signup validation error
- Bluetooth icon shows as disabled after update
- Light turns off mid-cycle without reason
- Temperature unit cannot be changed to Celsius
- Scenes override manual timer settings
- App fails to save time settings correctly
Requested features
12 requests- Multiple on/off cycles per day for automation
- Daylight saving time adjustment option
- Sunrise/sunset mode with adjustable brightness levels
- Better WiFi stability and range
- Improved app interface and user experience
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- Comprehensive help documentation
- Account recovery and data persistence
- Multi-language support with accurate translations
- System time picker instead of custom control
- Ability to set different brightness levels for different scenes
- More reliable remote control functionality
- Better error messages and troubleshooting guidance
In-app purchases
iENV
No in-app purchases
Mars Legacy
No in-app purchases
