# 心通达OA vs Grain SA

The clearest difference is update cadence: Grain SA at monthly against 心通达OA's every 5 months. Grain SA also leads on iOS requirement (10.2 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.

心通达OA ships an update every 5 months, Grain SA monthly. The most recent releases landed on June 25, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | 心通达OA | Grain SA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/oa/id1303449816/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Free | — |
| Size | 71 MB | 98 MB |
| Requires iOS | 15.6 | **10.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [波 高](https://appshunter.io/developer/964019392) | [4SIGHT SYSTEMS (PTY) LTD](https://appshunter.io/developer/656095757) |

## What reviewers say

### 心通达OA

[App page](https://appshunter.io/ios/app/oa/id1303449816)

This intelligent OA platform leverages cloud computing, AI, and big data to enhance traditional office operations. It focuses on system integration, industry applications, and smart workflow engines to support smart city cloud platforms and create efficient collaborative environments for organizations.

**Highlights:** Cloud-based SaaS architecture, AI, Big Data, and Machine Learning integration, Smart workflow engine, PaaS development platform, Mobile office support, Supports private cloud deployment, Multi-tenancy and multi-language support

**Features:** macOS Compatibility

**In-app purchases:** none


### Grain SA

[App page](https://appshunter.io/ios/app/grain-sa/id1665831580)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 心通达OA free?

心通达OA is free to download, with no in-app purchases.

### Is Grain SA free?

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

### Do 心通达OA or Grain SA have ads?

Neither 心通达OA nor Grain SA shows ads.

### Which is updated more often, 心通达OA or Grain SA?

心通达OA ships an update every 5 months, and Grain SA monthly. Most recently, 心通达OA was updated on June 25, 2026 and Grain SA on September 8, 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.*