# ISOTEC vs STRANEXT

The clearest difference is update cadence: STRANEXT at fortnightly against ISOTEC's every 3 months. ISOTEC's advantage is iOS requirement (15.0 vs 17.0). 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.

ISOTEC ships an update every 3 months, STRANEXT fortnightly. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | ISOTEC | STRANEXT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 29 MB | 83 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ISOTEC GmbH](https://appshunter.io/developer/1476709702) | [STRABAG BRVZ](https://appshunter.io/developer/1459383713) |

## What reviewers say

### ISOTEC

[App page](https://appshunter.io/ios/app/isotec/id1476709703)

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

**In-app purchases:** none


### STRANEXT

[App page](https://appshunter.io/ios/app/stranext/id6476859258)

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

**In-app purchases:** none


## Frequently asked questions

### Is ISOTEC free?

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

### Is STRANEXT free?

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

### Do ISOTEC or STRANEXT have ads?

Neither ISOTEC nor STRANEXT shows ads.

### Which is updated more often, ISOTEC or STRANEXT?

ISOTEC ships an update every 3 months, and STRANEXT fortnightly. Most recently, ISOTEC was updated on October 6, 2026 and STRANEXT on October 3, 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.*