Mars Legacy vs GrowDiary
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
GrowDiary
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GrowDiaries is your all-in-one plant cultivation app, designed to empower growers of all levels. Easily document your grow cycles, track progress, and share your experiences with a vibrant community of over 350,000 enthusiasts worldwide. Access a vast library of over 90,000 grow diaries to gain insights, learn new techniques, and improve your yields. Engage in forums, participate in contests, and connect with official representatives from leading seed breeders and nutrient companies. Whether you're a beginner or a seasoned cultivator, GrowDiaries provides the tools and community support to elevate your growing journey.
Screenshots
Verdict
The clearest difference is ads: Mars Legacy at none against GrowDiary's shown. Mars Legacy also leads on iOS requirement (13.0 vs 16.4). GrowDiary's advantage is update cadence (every 9 days vs monthly). On price, in-app purchases and device support 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.
Mars Legacy ships an update monthly, GrowDiary every 9 days. The most recent releases landed on October 14, 2026 and October 2, 2026 respectively.
| Parameter | Mars Legacy | GrowDiary |
|---|---|---|
| Price | Free | Free |
| Rating | 1.3 (70 ratings) — better | — |
| Positive reviews | 12.2% of reviews | — |
| Number of ratings | 70 — better | — |
| Update frequency | Monthly | Every 9 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 59 MB | 46 MB |
| Age rating | 4+ | 17+ |
| Developer | MARS TRADING RCC, INC. | GrowD soft s.r.o. |
Bugs and 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
GrowDiary
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mars Legacy
No in-app purchases
GrowDiary
No in-app purchases
