# ISBN vs StrasApp

The clearest difference is price: StrasApp at Free against ISBN's $0.99. StrasApp also leads on update cadence (every 2 months vs every 8 months) and review sentiment (77% vs 67%). On ads, in-app purchases and device support there is nothing between them.

StrasApp is free to download; ISBN costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ISBN ships an update every 8 months, StrasApp every 2 months. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | ISBN | StrasApp |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/strasapp/id1610325996/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 66.7% of reviews | **77.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 3 MB | 39 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CROMBEZ Emmanuel](https://appshunter.io/developer/375656695) | [Eurometropole de Strasbourg](https://appshunter.io/developer/1610325998) |

## What reviewers say

### ISBN

[App page](https://appshunter.io/ios/app/isbn/id1061626540)

Create and manage a personal book inventory using ISBN codes. Organize books with custom flags, notes, and contact associations. Export your library data to CSV for use in spreadsheets.

**Highlights:** Book inventory management, ISBN scanning/entry, Customizable flags for categorization, Free text notes per book, Attach books to contacts, CSV export for spreadsheets

**In-app purchases:** none


### StrasApp

[App page](https://appshunter.io/ios/app/strasapp/id1610325996)

This app simplifies daily life in the Strasbourg Eurometropolis. It offers real-time traffic and public transport information, event listings, venue directories, and administrative service updates. Personalize your dashboard with favorites for a tailored experience.

**Highlights:** Real-time public transport schedules, Event listings and agenda integration, Real-time crowd level information, Directory of local venues and services, Administrative procedure tracking, Customizable dashboard with favorites, Traffic and parking information

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ISBN free?

ISBN costs $0.99, with no in-app purchases.

### Is StrasApp free?

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

### Do ISBN or StrasApp have ads?

Neither ISBN nor StrasApp shows ads.

### Which is updated more often, ISBN or StrasApp?

ISBN ships an update every 8 months, and StrasApp every 2 months. Most recently, ISBN was updated on October 6, 2026 and StrasApp 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.*