# CMLink eSIM vs ByteSIM eSIM

The clearest difference is rating: ByteSIM eSIM at 4.6 against CMLink eSIM's 3.2. ByteSIM eSIM also leads on update cadence (weekly vs every 7 months) and review sentiment (44% vs 20%). CMLink eSIM's advantage is monetization model (free vs free with in-app purchases) and iOS requirement (12.0 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.

ByteSIM eSIM holds the better App Store score, 4.6 against 3.2. That said, the two scores are not equally well evidenced: ByteSIM eSIM has 516 ratings behind it against 16, so its average is the more settled of the two. Written reviews point the same way: 20% of CMLink eSIM's written reviews are positive against 44% of ByteSIM eSIM's.

CMLink eSIM ships an update every 7 months, ByteSIM eSIM weekly. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | CMLink eSIM | ByteSIM eSIM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (16 ratings)](https://appshunter.io/ios/app/cmlink-esim-global-esim-plan/id6449178471/reviews) | **[4.6 (516 ratings)](https://appshunter.io/ios/app/bytesim-esim-data-plan/id6450693631/reviews)** |
| Number of ratings | 16 | **516** |
| Positive reviews | 20.0% of reviews | **43.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 104 MB | 96 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [CHINA MOBILE INTERNATIONAL LIMITED](https://appshunter.io/developer/579246476) | [ByteSim Limited](https://appshunter.io/developer/1694269517) |

## What reviewers say

### CMLink eSIM

[App page](https://appshunter.io/ios/app/cmlink-esim-global-esim-plan/id6449178471)

Access global data connectivity in over 190 countries with this app. Easily set up an eSIM in minutes for seamless communication, avoiding expensive roaming fees and the need for physical SIM cards.

**Highlights:** Global data connectivity, eSIM setup in minutes, Coverage in 190+ destinations, Affordable data plans, Avoids roaming charges, Simple activation

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

**In-app purchases:** none


### ByteSIM eSIM

[App page](https://appshunter.io/ios/app/bytesim-esim-data-plan/id6450693631)

Stay connected globally with this app offering unlimited 5G data plans for over 200 countries. Enjoy local numbers, calls, and SMS without hidden costs. Get started in minutes with easy eSIM installation.

**Highlights:** Unlimited 5G data, Global coverage (200+ countries), Local numbers, Unlimited calls and SMS, No hidden costs, Easy eSIM installation

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Excellent travel assistant
- 🔒 Great customer support
- 👍 Easy to use
- 👍 Reliable and fast
- 👍 Cheap and affordable

**What reviewers complain about**

- 🐛 False advertising and misleading claims
- 🐛 Unreliable service and poor connectivity
- 🐛 Terrible customer service and lack of support
- 🐛 Complicated setup and activation issues
- 🐛 Spam emails and privacy concerns

**Reported bugs**

- eSIMs not activating or working as promised
- Inconsistent data speeds and throttling
- Incompatibility with certain devices or networks
- Billing and refund issues

**Requested features**

- Longer expiration period for eSIMs
- Ability to reissue eSIMs or extend validity
- Improved network coverage and reliability
- Better customer support and communication


## Frequently asked questions

### Is CMLink eSIM free?

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

### Is ByteSIM eSIM free?

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

### Which has better reviews, CMLink eSIM or ByteSIM eSIM?

ByteSIM eSIM is rated higher. CMLink eSIM averages 3.2 out of 5 from 16 ratings, while ByteSIM eSIM averages 4.6 from 516 ratings.

### Do CMLink eSIM or ByteSIM eSIM have ads?

Neither CMLink eSIM nor ByteSIM eSIM shows ads.

### Which is updated more often, CMLink eSIM or ByteSIM eSIM?

CMLink eSIM ships an update every 7 months, and ByteSIM eSIM weekly. Most recently, CMLink eSIM was updated on September 24, 2026 and ByteSIM eSIM on September 25, 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.*