# Curtiss vs ISSIoffice

The clearest difference is update cadence: ISSIoffice at every 10 days against Curtiss's every 5 weeks. Curtiss's advantage is iOS requirement (12.0 vs 14.4). 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.

Curtiss ships an update every 5 weeks, ISSIoffice every 10 days. The most recent releases landed on September 12, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Curtiss | ISSIoffice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/curtiss-wright-ar/id1493970861/reviews)** | — |
| Number of ratings | **7** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | Free | — |
| Size | 299 MB | 1 MB |
| Requires iOS | **12.0** | 14.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Curtiss-Wright](https://appshunter.io/developer/833840895) | [Standard Insurance Co., Inc.](https://appshunter.io/developer/1499766033) |

## What reviewers say

### Curtiss

[App page](https://appshunter.io/ios/app/curtiss-wright-ar/id1493970861)

Explore nuclear valves in 3D using augmented reality. View detailed exploded diagrams, identify individual parts with a bill of materials, and visualize fluid flow to understand valve functionality.

**Highlights:** Augmented reality valve visualization, 360-degree exploration, Exploded view of components, Bill of materials for parts, Fluid flow simulation

**In-app purchases:** none


### ISSIoffice

[App page](https://appshunter.io/ios/app/issioffice/id1532640768)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Curtiss free?

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

### Is ISSIoffice free?

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

### Do Curtiss or ISSIoffice have ads?

Neither Curtiss nor ISSIoffice shows ads.

### Which is updated more often, Curtiss or ISSIoffice?

Curtiss ships an update every 5 weeks, and ISSIoffice every 10 days. Most recently, Curtiss was updated on September 12, 2026 and ISSIoffice on September 9, 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.*