# ISIC vs U4

The clearest difference is review sentiment: U4 at 50% against ISIC's 20%. U4 also leads on monetization model (ad-supported vs free with in-app purchases). ISIC's advantage is update cadence (every 5 weeks vs every 3 months). 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.

ISIC ships an update every 5 weeks, U4 every 3 months. The most recent releases landed on October 20, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | ISIC | U4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (104 ratings)](https://appshunter.io/ios/app/isic/id886109982/reviews)** | — |
| Number of ratings | **104** | — |
| Positive reviews | 20.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 68 MB | 45 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ISIC Association](https://appshunter.io/developer/1782863607) | [U4-Center Diskothek Betriebs GmbH](https://appshunter.io/developer/1470946325) |

## What reviewers say

### ISIC

[App page](https://appshunter.io/ios/app/isic/id886109982)

Access thousands of student offers and services globally with a digital student ID. Instantly prove your official student status and discover discounts worldwide, both at home and while traveling. This app is for students with an International Student Identity Card.

**Highlights:** Search thousands of global student offers, Redeem offers instantly, Verify student status with digital card, Browse and filter discounts by location, View nearby discounts on map, Save favorite discounts and get notifications

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

**In-app purchases:** none


### U4

[App page](https://appshunter.io/ios/app/u4/id1470946326)

This loyalty program app allows users to earn points through various activities like scanning cards, inviting friends, or social media engagement. Redeem these points for rewards, exclusive offers, and participate in contests. Stay updated on events and news.

**Highlights:** Earn points through activities, Redeem points for rewards, Access exclusive offers, Participate in contests, Stay updated on events and news, Simple login with Facebook or email

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

**In-app purchases:** none


## Frequently asked questions

### Is ISIC free?

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

### Is U4 free?

U4 is free to download, with no in-app purchases.

### Do ISIC or U4 have ads?

Neither ISIC nor U4 shows ads.

### Which is updated more often, ISIC or U4?

ISIC ships an update every 5 weeks, and U4 every 3 months. Most recently, ISIC was updated on October 20, 2026 and U4 on October 14, 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.*