# Tri vs WeldUp Pocket

The clearest difference is ads: WeldUp Pocket at none against Tri's shown. WeldUp Pocket also leads on update cadence (every 10 days vs every 12 months) and monetization model (free vs ad-supported). On price, review sentiment, 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.

Tri ships an update every 12 months, WeldUp Pocket every 10 days. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Tri | WeldUp Pocket |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/tri-func/id496807268/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 12 months | **Every 10 days** |
| Monetization | Ad-supported | **Free** |
| Size | 4 MB | 63 MB |
| Requires iOS | 15.6 | **15.5** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Thirdware.jp](https://appshunter.io/developer/464228680) | [Lison Robin](https://appshunter.io/developer/6795987438) |

## What reviewers say

### Tri

[App page](https://appshunter.io/ios/app/tri-func/id496807268)

This utility app provides the formula and value for calculating triangle properties. It's designed for quick access to mathematical formulas related to triangles.

**Highlights:** Triangle formula display, Value calculation, Quick access utility, Mathematical formulas

**Features:** Vision Pro support

**In-app purchases:** none


### WeldUp Pocket

[App page](https://appshunter.io/ios/app/weldup-pocket/id6795987436)

This app provides a comprehensive suite of tools for pipefitters, welders, and fabricators. It offers calculations for offsets, tube bending, welding settings, and material specifications, all accessible offline. Designed for practical use in the field, it helps streamline complex calculations and job management.

**Highlights:** Offline functionality, Pipefitting calculations (offset, bending, templates), Welding settings and distortion analysis, Fabrication development tools, Material specification and traceability, Job management and export, Customizable interface for gloved hands

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

**In-app purchases:** none


## Frequently asked questions

### Is Tri free?

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

### Is WeldUp Pocket free?

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

### Do Tri or WeldUp Pocket have ads?

Tri shows ads; WeldUp Pocket does not.

### Which is updated more often, Tri or WeldUp Pocket?

Tri ships an update every 12 months, and WeldUp Pocket every 10 days. Most recently, Tri was updated on October 3, 2026 and WeldUp Pocket on October 15, 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.*