# ISL Groop vs IDmelon Authenticator

The clearest difference is in-app purchases: ISL Groop at none against IDmelon Authenticator's 2. ISL Groop also leads on iOS requirement (9.0 vs 16.0). IDmelon Authenticator's advantage is update cadence (every 2 weeks vs every 19 months). On price, ads and device support there is nothing between them.

Both are free to download. IDmelon Authenticator sells 2 in-app purchases, starting at $5.99 per year. ISL Groop asks for nothing beyond the download.

ISL Groop ships an update every 19 months, IDmelon Authenticator every 2 weeks. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | ISL Groop | IDmelon Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (7 ratings)](https://appshunter.io/ios/app/idmelon-authenticator/id1511376376/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 14 MB | 165 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ISL Online](https://appshunter.io/developer/406473673) | [IDmelon Technologies Inc](https://appshunter.io/developer/1165575817) |

## What reviewers say

### ISL Groop

[App page](https://appshunter.io/ios/app/isl-groop/id586629371)

**In-app purchases:** none


### IDmelon Authenticator

[App page](https://appshunter.io/ios/app/idmelon-authenticator/id1511376376)

Transform your smartphone into a FIDO2 security key for passwordless logins on all your devices. Generate, store, and manage passkeys for secure and easy access to online accounts and applications. Compatible with major platforms like GitHub, Facebook, and Microsoft.

**Highlights:** Smartphone as FIDO2 security key, Passwordless logins, Passkey generation and management, Cross-device compatibility, Supports GitHub, Facebook, Microsoft, Tap & Login experience

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IDmelon Standard | $5.99 | per year |
| IDmelon Premium | $11.99 | per year |


## Frequently asked questions

### Is ISL Groop free?

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

### Is IDmelon Authenticator free?

IDmelon Authenticator is free to download, with in-app purchases available.

### Do ISL Groop or IDmelon Authenticator have ads?

Neither ISL Groop nor IDmelon Authenticator shows ads.

### Which is updated more often, ISL Groop or IDmelon Authenticator?

ISL Groop ships an update every 19 months, and IDmelon Authenticator every 2 weeks. Most recently, ISL Groop was updated on October 1, 2026 and IDmelon Authenticator on October 13, 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.*