# i vs e

The clearest difference is update cadence: i at every 2 months against e's every 5 months. i also leads on iOS requirement (10.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

i ships an update every 2 months, e every 5 months. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | i | e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/i-string/id1547563821/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | — |
| Size | 16 MB | 40 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Heng Chih Huang](https://appshunter.io/developer/1063165534) | [Dongguan Zhiyaoxing Lighting Technology Co., Ltd.](https://appshunter.io/developer/1822184196) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-string/id1547563821)

Control two-color lamp strings with a simple, intuitive interface. Intelligently manage colorful and white lights, and customize display patterns through the app's functions.

**Highlights:** Control two-color lamp strings, Manage colorful and white lights, Remote control-like interface, Intelligent display pattern control, Simple and easy operation

**Features:** macOS Compatibility

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-light-control/id6747651687)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is i free?

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

### Is e free?

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

### Do i or e have ads?

Neither i nor e shows ads.

### Which is updated more often, i or e?

i ships an update every 2 months, and e every 5 months. Most recently, i was updated on October 4, 2026 and e on October 8, 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.*