# STRUCTOGRAM vs SmartN

The clearest difference is update cadence: SmartN at every 3 months against STRUCTOGRAM's every 9 months. SmartN also leads on iOS requirement (13.0 vs 15.6). 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.

STRUCTOGRAM ships an update every 9 months, SmartN every 3 months. The most recent releases landed on June 25, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | STRUCTOGRAM | SmartN |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 months** |
| Monetization | Free | — |
| Size | 62 MB | 15 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [IBSA Institut für Biostruktur-Analysen AG](https://appshunter.io/developer/1222487681) | [SmartN-1 PRO](https://appshunter.io/developer/1765316568) |

## What reviewers say

### STRUCTOGRAM

[App page](https://appshunter.io/ios/app/structogram/id683979684)

Explore biostructural analysis through interactive sampling and practice. Designed for professionals, this application offers a hands-on way to engage with and understand complex analytical concepts.

**Highlights:** Biostructural analysis exploration, Interactive sampling tool, Practice for professionals, Educational resource

**Features:** macOS Compatibility

**In-app purchases:** none


### SmartN

[App page](https://appshunter.io/ios/app/smartn-1-c1rcle/id6733229888)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is STRUCTOGRAM free?

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

### Is SmartN free?

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

### Do STRUCTOGRAM or SmartN have ads?

Neither STRUCTOGRAM nor SmartN shows ads.

### Which is updated more often, STRUCTOGRAM or SmartN?

STRUCTOGRAM ships an update every 9 months, and SmartN every 3 months. Most recently, STRUCTOGRAM was updated on June 25, 2026 and SmartN on September 7, 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.*