# E vs ReefFlow

The clearest difference is in-app purchases: E at none against ReefFlow's 3. E also leads on iOS requirement (8.0 vs 15.0). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. ReefFlow sells 3 in-app purchases, starting at $0.99 per month. E asks for nothing beyond the download.

## The numbers

| Metric | E | ReefFlow |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | **Free** | Freemium |
| Size | 12 MB | 153 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [Eco-lamps Ltd](https://appshunter.io/developer/1080191960) | [Raphael Pinheiro da Silva](https://appshunter.io/developer/1815366479) |

## What reviewers say

### E

[App page](https://appshunter.io/ios/app/e-control-system/id1080191961)

Control and program Eco-lamps products, including reef aquarium lights, plant lights, and gemstone lights. Offers automated and manual settings for color channels, intensity, and spectrum adjustment to create ideal lighting environments.

**Highlights:** Program reef and plant lights with auto/manual settings, Adjust 7 color channels (UV, BlueViolet, Royal Blue, Cyan, White), Control light intensity from 0-100%, Manage water depth and power for specific spectrums, Switch between 5 light modes (Auto, Manual, Thunder, Demo, OFF), Control gemstone lights with up to 15 spectrum stages, Wireless control for gemstone lights

**Features:** macOS Compatibility

**In-app purchases:** none


### ReefFlow

[App page](https://appshunter.io/ios/app/reefflow-reef-and-aquarium/id6748268688)

This app serves as a comprehensive digital journal for both saltwater and freshwater aquarists. It offers AI-powered analysis of water parameters and simplifies tank maintenance, consolidating all essential information in one convenient location.

**Highlights:** Digital aquarium journal, AI-powered parameter analysis, Maintenance tracking, Supports saltwater and freshwater tanks, Consolidated information hub

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads! | $0.99 | per month |
| ReefFlow Premium Mensal | $4.99 | per month |
| ReefFlow Premium Anual | $39.99 | per year |


## Frequently asked questions

### Is E free?

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

### Is ReefFlow free?

ReefFlow is free to download, with in-app purchases available.

### Do E or ReefFlow have ads?

Neither E nor ReefFlow 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.*