# Grape Solar vs Epoch Li

Grape Solar and Epoch Li both sit at 2.7 stars, but that hides the real split: 29% of Epoch Li's written reviews are positive against 0% of Grape Solar's. Epoch Li also leads on ratings volume (70 vs 3). Grape Solar's advantage is iOS requirement (11.0 vs 13.0). On price, rating, 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.

On the App Store both sit at effectively the same score — 2.7 for Grape Solar against 2.6 for Epoch Li. That said, the two scores are not equally well evidenced: Epoch Li has 70 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 0% of Grape Solar's written reviews are positive against 29% of Epoch Li's.

## The numbers

| Metric | Grape Solar | Epoch Li |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (3 ratings)](https://appshunter.io/ios/app/grape-solar/id1611877437/reviews)** | [2.6 (70 ratings)](https://appshunter.io/ios/app/epoch-li-ion/id1640434817/reviews) |
| Number of ratings | 3 | **70** |
| Positive reviews | 0.0% of reviews | **29.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | Free | Free |
| Size | 7 MB | 35 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [HNE](https://appshunter.io/developer/1595524900) | [EDG Sales International LLC](https://appshunter.io/developer/1546168152) |

## What reviewers say

### Grape Solar

[App page](https://appshunter.io/ios/app/grape-solar/id1611877437)

Monitor and control your solar charge controller remotely. View system status, historical data, and adjust parameters like battery type and load settings. Requires a compatible BT module.

**Highlights:** Remote display and operation, PV, battery, and DC load status, Historical data display, Parameter settings, Battery type adjustment, Load mode settings

**Features:** macOS Compatibility

**In-app purchases:** none


### Epoch Li

[App page](https://appshunter.io/ios/app/epoch-li-ion/id1640434817)

Monitor your lithium-ion battery system in real-time via Bluetooth. View voltage, current, power, and internal resistance. Receive alerts for temperature, short circuits, and voltage deviations to extend battery life and enhance stability.

**Highlights:** Real-time voltage, current, power, and internal resistance display, Individual battery voltage and alarm status monitoring, Cell comparison and balancing display, Temperature and critical parameter warnings, Record of all warnings and protection events

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

**In-app purchases:** none

**What reviewers like**

- 🔋 Outstanding battery performance and capacity
- 📱 Excellent real-time battery monitoring
- 👍 Simple and clean app interface (mentioned by one user)
- ⚡ Fast and efficient charging performance
- 💡 Provides detailed battery information (SOC, voltage, current, temp, cells)

**What reviewers complain about**

- 🐛 Frequent Bluetooth connection issues (drops, doesn't auto-connect)
- 🐛 App crashes frequently
- 🐛 Clunky and unreliable Bluetooth connectivity
- 🐛 App disconnects when minimized or switching apps
- 🐛 Does not remember previously connected devices

**Reported bugs**

- Bluetooth does not auto-connect
- Bluetooth signal frequently drops
- App crashes frequently
- App disconnects when minimized or switching apps
- App does not remember previously connected devices

**Requested features**

- Filter Bluetooth devices by MAC address prefix
- Implement BLE non-exclusive connection
- Bring back old app features (time to charge/discharge)
- Document app data and features
- Provide password for advanced settings


## Frequently asked questions

### Is Grape Solar free?

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

### Is Epoch Li free?

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

### Which has better reviews, Grape Solar or Epoch Li?

Grape Solar is rated higher. Grape Solar averages 2.7 out of 5 from 3 ratings, while Epoch Li averages 2.6 from 70 ratings.

### Do Grape Solar or Epoch Li have ads?

Neither Grape Solar nor Epoch Li shows ads.

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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.*