# SL vs ECS

The clearest difference is update cadence: ECS at every 6 weeks against SL's every 8 months. SL's advantage is iOS requirement (13.0 vs 15.5). 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.

SL ships an update every 8 months, ECS every 6 weeks. The most recent releases landed on September 19, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | SL | ECS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 6 weeks** |
| Size | 16 MB | 54 MB |
| Requires iOS | **13.0** | 15.5 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [VADACTRO](https://appshunter.io/developer/994931096) | [Shenzhen Ebelong Technology Co., Ltd.](https://appshunter.io/developer/1263864366) |

## What reviewers say

### SL

[App page](https://appshunter.io/ios/app/sl-bus-pro/id1620023546)

**Features:** macOS Compatibility

**In-app purchases:** none


### ECS

[App page](https://appshunter.io/ios/app/ecs-tool/id6473515825)

**In-app purchases:** none


## Frequently asked questions

### Is SL free?

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

### Is ECS free?

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

### Do SL or ECS have ads?

Neither SL nor ECS shows ads.

### Which is updated more often, SL or ECS?

SL ships an update every 8 months, and ECS every 6 weeks. Most recently, SL was updated on September 19, 2026 and ECS on September 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*