# csl. vs SDWAN Fast

The clearest difference is update cadence: csl. at every 3 weeks against SDWAN Fast's every 4 months. SDWAN Fast's advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

csl. ships an update every 3 weeks, SDWAN Fast every 4 months. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | csl. | SDWAN Fast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.6 (23 ratings)](https://appshunter.io/ios/app/csl/id433378614/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 8.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 176 MB | 12 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [CSL Mobile Limited](https://appshunter.io/developer/340690342) | [BEIJING LIANCHIXITONG TECHNOLOGY LLC](https://appshunter.io/developer/1549444520) |

## What reviewers say

### csl.

[App page](https://appshunter.io/ios/app/csl/id433378614)

Manage your mobile service plan, monitor data and voice usage, and check your account balance. Access exclusive offers, coupons, and limited-period deals. Browse the latest mobile models and service plans with special pricing.

**Highlights:** Monitor data and voice usage, Manage roaming balance, Check account balance and billing history, Automatic credit card payment setup, Access coupons and limited-period offers, Browse latest mobile models and plans

**In-app purchases:** none


### SDWAN Fast

[App page](https://appshunter.io/ios/app/sdwan-fast/id1576286639)

**In-app purchases:** none


## Frequently asked questions

### Is csl. free?

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

### Is SDWAN Fast free?

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

### Do csl. or SDWAN Fast have ads?

Neither csl. nor SDWAN Fast shows ads.

### Which is updated more often, csl. or SDWAN Fast?

csl. ships an update every 3 weeks, and SDWAN Fast every 4 months. Most recently, csl. was updated on September 16, 2026 and SDWAN Fast on September 9, 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.*