# Smart Invoice ERP vs Si

The clearest difference is in-app purchases: Si at none against Smart Invoice ERP's 3. Smart Invoice ERP's advantage is update cadence (every 2 months vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Smart Invoice ERP sells 3 one-off in-app purchases. Si asks for nothing beyond the download.

Smart Invoice ERP ships an update every 2 months, Si every 5 months. The most recent releases landed on June 10, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Smart Invoice ERP | Si |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.5 (2 ratings)](https://appshunter.io/ios/app/smart-invoice-erp/id915699862/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 9 MB | 12 MB |
| Requires iOS | 10 | **9.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [海件 阳](https://appshunter.io/developer/861700887) | [旭日东方](https://appshunter.io/developer/1472957256) |

## What reviewers say

### Smart Invoice ERP

[App page](https://appshunter.io/ios/app/smart-invoice-erp/id915699862)

Manage sales, purchases, stock, and clients with this mobile ERP solution. Scan barcodes, import contacts, and print receipts via Bluetooth. Suitable for various retail and wholesale businesses.

**Highlights:** Sales and purchase tracking, Inventory management, Client database, Barcode scanning, Bluetooth receipt printing, Cloud backup, Offline operation

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 year VIP | $26.99 | one-time |
| VIP Account | $39.99 | one-time |
| 12 months vip | $39.99 | one-time |


### Si

[App page](https://appshunter.io/ios/app/si-link/id1484583420)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart Invoice ERP free?

Smart Invoice ERP is free to download, with in-app purchases available.

### Is Si free?

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

### Do Smart Invoice ERP or Si have ads?

Neither Smart Invoice ERP nor Si shows ads.

### Which is updated more often, Smart Invoice ERP or Si?

Smart Invoice ERP ships an update every 2 months, and Si every 5 months. Most recently, Smart Invoice ERP was updated on June 10, 2026 and Si on September 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*