| Core Identity |
| Developer | 婷婷 乔 | Bastiaan Modderkolk | e77code GmbH | Shenzhen Maicheng Technology Innovation Co.,Ltd | Overkill Solar LLC | Shenzhen Litime Technology | Shenzhen Growatt New Energy Technology Co.,Ltd | Rems Plus LLC | GoodWe Technologies Co., Ltd. | OneSoil AG |
| Category | Utilities | Utilities | Productivity | Utilities | Utilities | Lifestyle | Utilities | Business | Utilities | Utilities |
| Platform | Android, iOS | iOS | iOS | iOS, Android | iOS, Android | iOS, Android | iOS | iOS | iOS, Android | iOS, Android |
| Store Metrics |
| Rating | 2.1 / 5 | 4.6 / 5 | 3.6 / 5 | 2.8 / 5 | 4.7 / 5 | 2.8 / 5 | 1.9 / 5 | 5.0 / 5 | 2.1 / 5 | 4.8 / 5 |
| Ratings Count | 75 | 2,924 | 66 | 46 | 19 | 199 | 17 | 1 | 31 | 142 |
| Price | Free | Free | Free | Free | Free | Free | Free | Free | Free | Free |
| Release Date | Jul 1, 2020 | Oct 16, 2019 | May 3, 2018 | Apr 26, 2024 | Nov 14, 2022 | Nov 30, 2023 | Jun 16, 2021 | Sep 22, 2018 | Jul 30, 2018 | Aug 18, 2019 |
| Last Updated | Dec 17, 2025 | May 7, 2026 | Apr 21, 2024 | Jul 8, 2025 | Jun 10, 2025 | May 8, 2026 | May 23, 2026 | May 13, 2026 | Dec 18, 2025 | Apr 7, 2026 |
| Sentiment & Reviews |
| Sentiment | terrible | - | negative | mixed | positive | negative | negative | - | - | positive |
| Score | 15/100 | - | 35/100 | 35/100 | 75/100 | 35/100 | 20/100 | - | - | 85/100 |
| Praises | - Core battery monitoring functionality provides essential visibility into charge levels and cell health
| - | - Core battery management functionality provides useful data for DIY energy storage projects
| - Bluetooth connectivity provides reliable real-time monitoring of battery state for remote power systems
| - Advanced battery management features provide superior control compared to manufacturer-provided applications
| - Sleek and intuitive interface design
| - | - | - | - Ease of remote field monitoring
|
| Complaints | - Frequent application crashes and white screen errors prevent access to critical battery data
- Bluetooth connectivity failures prevent the app from detecting or communicating with battery hardware
| - | - Aggressive monetization tactics require recurring payments to access basic configuration settings
| - Mandatory account login requirements prevent offline access to critical battery data during field use
| - Persistent location and media permission prompts disrupt the user experience during daily operation
| - Bluetooth connectivity stability issues
- Lack of advanced configuration tools
| - Connectivity and stability issues
| - | - | - Limited offline editing capabilities
|
| Requests | - Offline mode functionality to allow Bluetooth monitoring without requiring an active internet connection
| - | - | - Individual cell voltage monitoring is required to properly manage battery health and balancing
| - Persistent storage for favorite battery devices to enable quick switching between multiple units
| - Wi-Fi remote monitoring support
| - | - | - | - |
| Strategic Intel |
| Strengths | - Unique Bluetooth naming convention ensures hardware-software lock-in for DalyBMS units
- Password-protected settings provide safety compliance for professional installers
| - | - PIN-protected configuration increases switching costs for professional installers
- Apple Watch integration expands engagement surface to wearables
- Firmware unlocking capability serves as a unique acquisition lever
| - Proprietary remote discharge control creates a hardware-locked moat
- QR code pairing reduces initial setup friction
| - Proprietary .fig file format creates high switching costs for complex solar arrays
- Open-access parameter tuning justifies hardware purchase for power users
| - 10-language library functions as a B2B distribution barrier into international markets
- Clean interface reduces technical entry barriers for casual users
| - Direct hardware-level connectivity via WiFi/Bluetooth
- Specialized utility for authorized Growatt installer base
| - Mechanic dispatch tracking provides a direct operational link between remote alerts and physical site repairs.
| - 11-language localization functions as a B2B distribution barrier into international solar markets[2]
- Deep integration with GoodWe inverter hardware telemetry[2]
| - Software-only architecture lowers entry barriers for diverse operations
- Satellite-based NDVI monitoring provides immediate value without hardware
|
| Weaknesses | - 1.49 rating on Android indicates severe stability issues
- Mandatory internet requirement for local Bluetooth tasks alienates off-grid users
| - | - 3.57 rating indicates significant user dissatisfaction
- Configuration-save failures erode trust in core utility
- Pay-gating basic settings drives negative sentiment
| - Mandatory login prevents offline access in field scenarios
- Lack of concurrent multi-battery monitoring limits system management
| - Persistent location and media permission prompts erode daily usage
- Lack of Bluetooth PIN protection exposes batteries to unauthorized changes
- Inconsistent connectivity prevents reliable monitoring of battery status
| - 2.7-star rating indicates high churn risk
- Bluetooth-only architecture limits utility compared to Wi-Fi-enabled rivals
- Missing advanced configuration tools for professional installers
| - 1.94-star rating indicates high friction
- Lack of granular diagnostic logs compared to SolarAssistant
| - Lack of incident de-duplication logic forces manual alert management for facility managers.
| - 2.1★ iOS rating reflects severe post-update instability[1]
- Missing historical data charts prevent professional performance analysis[1]
- Frequent manual wifi reconfiguration requirements[1]
| - Lack of ground-truth sensor integration limits predictive accuracy
- Offline editing functionality restricted compared to professional-grade tools
|
| Pricing | free | free | freemium | free | free | free | free | free | free | freemium |
| Momentum | Maintenance | - | Zombie | Zombie | Zombie | Maintenance | Maintenance | Maintenance | Maintenance | Maintenance |
| Update Cadence | 2 versions, ~90d avg | - | 1 versions | 2 versions, ~3d avg | 2 versions, 2 majors/6mo, ~1d avg | 2 versions, ~1d avg | 1 versions | 1 versions | 2 versions, ~2d avg | 2 versions, ~30d avg |
