# CheX（チェクロス） vs SD Neo

The clearest difference is in-app purchases: SD Neo at none against CheX（チェクロス）'s 1. SD Neo also leads on iOS requirement (11.0 vs 17.0). CheX（チェクロス）'s advantage is update cadence (every 10 days vs monthly). On price, ads and device support there is nothing between them.

Both are free to download. CheX（チェクロス） sells 1 one-off in-app purchase. SD Neo asks for nothing beyond the download.

CheX（チェクロス） ships an update every 10 days, SD Neo monthly. The most recent releases landed on September 25, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | CheX（チェクロス） | SD Neo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 10 days** | Monthly |
| Monetization | Free | — |
| Size | 70 MB | 113 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | **iPhone, iPad** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [YSL Solution Co., Ltd.](https://appshunter.io/developer/404131444) | [Kissei Comtec Co., Ltd.](https://appshunter.io/developer/503794772) |

## What reviewers say

### CheX（チェクロス）

[App page](https://appshunter.io/ios/app/chex/id1289611667)

This app allows users to quickly view construction documents, add handwritten notes and photos directly onto blueprints, and share this information with others. It helps organize and update field information efficiently, preventing errors from outdated plans.

**Highlights:** High-speed blueprint viewing, Annotate with handwritten notes, Attach photos to documents, Cross-platform sharing (Windows/Mac), User permission controls, Organize large document sets

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month (30 days) | $28.99 | one-time |


### SD Neo

[App page](https://appshunter.io/ios/app/sd-neo/id1406243783)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CheX（チェクロス） free?

CheX（チェクロス） is free to download, with in-app purchases available.

### Is SD Neo free?

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

### Do CheX（チェクロス） or SD Neo have ads?

Neither CheX（チェクロス） nor SD Neo shows ads.

### Which is updated more often, CheX（チェクロス） or SD Neo?

CheX（チェクロス） ships an update every 10 days, and SD Neo monthly. Most recently, CheX（チェクロス） was updated on September 25, 2026 and SD Neo on September 10, 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.*