# NVS Explorer vs Epoch Li

The clearest difference is rating: NVS Explorer at 4.3 against Epoch Li's 2.6. NVS Explorer also leads on review sentiment (60% vs 29%). Epoch Li's advantage is update cadence (every 3 weeks vs every 3 months) and ratings volume (70 vs 3). 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.

NVS Explorer holds the better App Store score, 4.3 against 2.6. 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 point the same way: 60% of NVS Explorer's written reviews are positive against 29% of Epoch Li's.

NVS Explorer ships an update every 3 months, Epoch Li every 3 weeks. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | NVS Explorer | Epoch Li |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/nvs-explorer/id373563865/reviews)** | [2.6 (70 ratings)](https://appshunter.io/ios/app/epoch-li-ion/id1640434817/reviews) |
| Number of ratings | 3 | **70** |
| Positive reviews | **60.0% of reviews** | 29.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 19 MB | 35 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [NANOOS-IOOSASSOCIATION](https://appshunter.io/developer/1792959921) | [EDG Sales International LLC](https://appshunter.io/developer/1546168152) |

## What reviewers say

### NVS Explorer

[App page](https://appshunter.io/ios/app/nvs-explorer/id373563865)

Access real-time ocean data for the Pacific Northwest. Visualize conditions from various observing assets, view historical data plots, and share findings via email or SMS. Customize units and save favorite assets for quick access.

**Highlights:** View real-time ocean data, Access 24-hour, 7-day, and 30-day data plots, Share data plots via email or SMS, Searchable list of observing assets, Save favorite observing assets, Display data in scientific or common units, Data plots for tuna fishers

**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 NVS Explorer free?

NVS Explorer 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, NVS Explorer or Epoch Li?

NVS Explorer is rated higher. NVS Explorer averages 4.3 out of 5 from 3 ratings, while Epoch Li averages 2.6 from 70 ratings.

### Do NVS Explorer or Epoch Li have ads?

Neither NVS Explorer nor Epoch Li shows ads.

### Which is updated more often, NVS Explorer or Epoch Li?

NVS Explorer ships an update every 3 months, and Epoch Li every 3 weeks. Most recently, NVS Explorer was updated on October 23, 2026 and Epoch Li 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.*