# Epoch Li vs Overkill Solar

The clearest difference is review sentiment: Overkill Solar at 100% against Epoch Li's 29%. Overkill Solar also leads on rating (4.8 vs 2.6). Epoch Li's advantage is update cadence (every 3 weeks vs every 4 months) and ratings volume (70 vs 21). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Overkill Solar holds the better App Store score, 4.8 against 2.6. Both are backed by a comparable volume of ratings — 70 and 21 respectively. Written reviews point the same way: 29% of Epoch Li's written reviews are positive against 100% of Overkill Solar's.

Epoch Li ships an update every 3 weeks, Overkill Solar every 4 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Epoch Li | Overkill Solar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (70 ratings)](https://appshunter.io/ios/app/epoch-li-ion/id1640434817/reviews) | **[4.8 (21 ratings)](https://appshunter.io/ios/app/overkill-solar/id6444233824/reviews)** |
| Number of ratings | **70** | 21 |
| Positive reviews | 29.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | Free |
| Size | 35 MB | 21 MB |
| Requires iOS | **13.0** | 13.4 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [EDG Sales International LLC](https://appshunter.io/developer/1546168152) | [Overkill Solar LLC](https://appshunter.io/developer/1653276724) |

## What reviewers say

### 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


### Overkill Solar

[App page](https://appshunter.io/ios/app/overkill-solar/id6444233824)

This app connects to a solar battery management system to provide detailed monitoring and control. Users can track cell voltage, capacity, current, and manage charging/discharging ports. It also offers advanced configuration options for calibration, balancing, and protection settings.

**Highlights:** Monitor cell voltage and capacity, Control charging and discharging ports, Calibrate voltage and current, Configure balancer and protection values, Log voltage, current, and power, Monitor BMS alarms and temperature

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Epoch Li free?

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

### Is Overkill Solar free?

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

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

Overkill Solar is rated higher. Epoch Li averages 2.6 out of 5 from 70 ratings, while Overkill Solar averages 4.8 from 21 ratings.

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

Neither Epoch Li nor Overkill Solar shows ads.

### Which is updated more often, Epoch Li or Overkill Solar?

Epoch Li ships an update every 3 weeks, and Overkill Solar every 4 months. Most recently, Epoch Li was updated on October 24, 2026 and Overkill Solar on October 24, 2026.

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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.*