# LongPing Online vs GPD

The clearest difference is iOS requirement: LongPing Online at 13.0 against GPD's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | LongPing Online | GPD |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 72 MB | 20 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [袁隆平农业高科技股份有限公司](https://appshunter.io/developer/1112047884) | [Charles Steinmetz](https://appshunter.io/developer/1514567876) |

## What reviewers say

### LongPing Online

[App page](https://appshunter.io/ios/app/longping-online/id1510861017)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### GPD

[App page](https://appshunter.io/ios/app/gpd/id1514567877)

This app helps farmers assess planting uniformity by measuring seed spacing. It calculates the Coefficient of Variation (CV%) and analyzes distribution regularity, identifying acceptable spacing, doubles, and skips to improve crop yield.

**Highlights:** Measures seed spacing uniformity, Calculates Coefficient of Variation (CV%), Analyzes distribution regularity (acceptable, doubles, skips), Identifies causes of planting errors, Aids in improving plantability

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is LongPing Online free?

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

### Is GPD free?

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

### Do LongPing Online or GPD have ads?

Neither LongPing Online nor GPD shows ads.

### Which is updated more often, LongPing Online or GPD?

LongPing Online ships an update every 2 months, and GPD every 2 months. Most recently, LongPing Online was updated on September 9, 2026 and GPD on September 17, 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.*