# iWinPer vs Grain SA

The clearest difference is price: Grain SA at Free against iWinPer's $0.99. Grain SA also leads on in-app purchases (none vs 5) and update cadence (monthly vs every 3 months). On ads there is nothing between them.

Grain SA is free to download; iWinPer costs $0.99 up front. iWinPer sells 5 one-off in-app purchases. Grain SA asks for nothing beyond the download.

iWinPer ships an update every 3 months, Grain SA monthly. The most recent releases landed on May 14, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | iWinPer | Grain SA |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 25 MB | 98 MB |
| Requires iOS | 15 | **10.2** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SYSTEM DATA SOFTWARE SRL](https://appshunter.io/developer/526739965) | [4SIGHT SYSTEMS (PTY) LTD](https://appshunter.io/developer/656095757) |

## What reviewers say

### iWinPer

[App page](https://appshunter.io/ios/app/iwinper/id526739962)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| spare parts database 7 days | $11.99 | one-time |
| spare parts database 1 month | $18.99 | one-time |
| spare parts database 3 months | $49.99 | one-time |
| spare parts database 6 months | $89.99 | one-time |
| spare parts database 1 year | $139.99 | one-time |


### Grain SA

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iWinPer free?

iWinPer costs $0.99, and also offers in-app purchases.

### Is Grain SA free?

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

### Do iWinPer or Grain SA have ads?

Neither iWinPer nor Grain SA shows ads.

### Which is updated more often, iWinPer or Grain SA?

iWinPer ships an update every 3 months, and Grain SA monthly. Most recently, iWinPer was updated on May 14, 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.*