# eFlow vs HiSolar

eFlow and HiSolar are too close to call on the numbers: across 8 compared parameters — price, review sentiment, update cadence and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

eFlow ships an update every 3 weeks, HiSolar monthly. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | eFlow | HiSolar |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/eflow/id1434703366/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 3 MB | 257 MB |
| Requires iOS | **11** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Savant Electronics Inc.](https://appshunter.io/developer/1288418213) | [深圳市泽联格迈科技有限公司](https://appshunter.io/developer/1768209769) |

## What reviewers say

### eFlow

[App page](https://appshunter.io/ios/app/eflow/id1434703366)

Monitor the capacity of your water filters using a Bluetooth flow meter. Track multiple filters simultaneously to ensure optimal performance and timely replacements.

**Highlights:** Read water filter capacity via Bluetooth, Connect to Bluetooth flow meter, Monitor multiple water filters, Track filter performance

**Features:** macOS Compatibility

**In-app purchases:** none


### HiSolar

[App page](https://appshunter.io/ios/app/hisolar/id6447599228)

Monitor and control your green energy devices locally. View device status, adjust settings, check alarms, and export logs. Update firmware directly from your mobile phone.

**Highlights:** Local device login, Monitor running status, Set parameters, View alarms, Export logs, Update firmware

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

**In-app purchases:** none


## Frequently asked questions

### Is eFlow free?

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

### Is HiSolar free?

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

### Do eFlow or HiSolar have ads?

Neither eFlow nor HiSolar shows ads.

### Which is updated more often, eFlow or HiSolar?

eFlow ships an update every 3 weeks, and HiSolar monthly. Most recently, eFlow was updated on October 2, 2026 and HiSolar on September 28, 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.*