# GPB Lithium vs Pipe Offset

The clearest difference is in-app purchases: GPB Lithium at none against Pipe Offset's 1. GPB Lithium also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (11.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Pipe Offset sells 1 one-off in-app purchase. GPB Lithium asks for nothing beyond the download.

GPB Lithium ships an update every 2 weeks, Pipe Offset every 2 months. The most recent releases landed on October 1, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | GPB Lithium | Pipe Offset |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pipe-offset/id6792919515/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | — | Freemium |
| Size | 11 MB | 4 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [江西达伙网络科技有限公司](https://appshunter.io/developer/1234844673) | [Laure Shin](https://appshunter.io/developer/6785226025) |

## What reviewers say

### GPB Lithium

[App page](https://appshunter.io/ios/app/gpb-lithium/id6467422851)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pipe Offset

[App page](https://appshunter.io/ios/app/pipe-offset/id6792919515)

Calculate pipe cut lengths and branch templates for pipefitters and steamfitters. It computes cut pieces, travel, deductions, and joint gaps, supporting metric and imperial dimensions with various fitting profiles. Unlock advanced features like parallel banks, target runs, and printable PDF templates.

**Highlights:** Calculate pipe cut lengths, Solve simple and rolling offsets, Lay out branch connections, Generate printable PDF templates, Support metric and imperial dimensions, Save and export jobs, Works offline

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock PipeOffset | $19.99 | one-time |


## Frequently asked questions

### Is GPB Lithium free?

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

### Is Pipe Offset free?

Pipe Offset is free to download, with in-app purchases available.

### Do GPB Lithium or Pipe Offset have ads?

Neither GPB Lithium nor Pipe Offset shows ads.

### Which is updated more often, GPB Lithium or Pipe Offset?

GPB Lithium ships an update every 2 weeks, and Pipe Offset every 2 months. Most recently, GPB Lithium was updated on October 1, 2026 and Pipe Offset on October 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.*