# FlyData eSIM vs SefereSIM

The clearest difference is update cadence: FlyData eSIM at every 2 weeks against SefereSIM's every 5 weeks. FlyData eSIM also leads on iOS requirement (15.1 vs 18.0). 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.

FlyData eSIM ships an update every 2 weeks, SefereSIM every 5 weeks. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | FlyData eSIM | SefereSIM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flydata-esim/id6765749725/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Free | — |
| Size | 18 MB | 46 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Parrot Phone Network](https://appshunter.io/developer/621494179) | [Vigilainte Inc](https://appshunter.io/developer/1843531034) |

## What reviewers say

### FlyData eSIM

[App page](https://appshunter.io/ios/app/flydata-esim/id6765749725)

Get instant mobile data in over 200 countries without a physical SIM card. Purchase and install a digital SIM plan easily through the app for seamless global connectivity.

**Highlights:** Instant digital SIM delivery, Coverage in 200+ countries, No contracts or roaming fees, Prepaid plans, App-based plan management

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

**In-app purchases:** none


### SefereSIM

[App page](https://appshunter.io/ios/app/seferesim-esim-travel-data/id6801062903)

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

**In-app purchases:** none


## Frequently asked questions

### Is FlyData eSIM free?

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

### Is SefereSIM free?

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

### Do FlyData eSIM or SefereSIM have ads?

Neither FlyData eSIM nor SefereSIM shows ads.

### Which is updated more often, FlyData eSIM or SefereSIM?

FlyData eSIM ships an update every 2 weeks, and SefereSIM every 5 weeks. Most recently, FlyData eSIM was updated on November 5, 2026 and SefereSIM on November 10, 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.*