# Triangle Calc A vs PipeChecker

The clearest difference is price: Triangle Calc A at $0.99 against PipeChecker's $7.99. PipeChecker's advantage is update cadence (every 4 months vs every 56 months) and iOS requirement (15.0 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

Triangle Calc A costs $0.99 and PipeChecker $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Triangle Calc A ships an update every 56 months, PipeChecker every 4 months. The most recent releases landed on September 10, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Triangle Calc A | PipeChecker |
| --- | --- | --- |
| Price | **$0.99** | $7.99 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 56 months | **Every 4 months** |
| Monetization | — | Paid |
| Size | 0 MB | 27 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [kohei yamane](https://appshunter.io/developer/1239055575) | [AIR DESIGN, INC.](https://appshunter.io/developer/923430781) |

## What reviewers say

### Triangle Calc A

[App page](https://appshunter.io/ios/app/triangle-calc-a/id1582200016)

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

**In-app purchases:** none


### PipeChecker

[App page](https://appshunter.io/ios/app/pipechecker/id1632174229)

This tool assists HVAC, sanitary, and plant piping engineers in selecting optimal pressure piping sizes with simple operations. It streamlines the design process for piping equipment technicians.

**Highlights:** Optimal pressure pipe sizing, Simplified operation, For piping equipment technicians, Supports HVAC, sanitary, and plant systems

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

**In-app purchases:** none


## Frequently asked questions

### Is Triangle Calc A free?

Triangle Calc A costs $0.99, with no in-app purchases.

### Is PipeChecker free?

PipeChecker costs $7.99, with no in-app purchases.

### Do Triangle Calc A or PipeChecker have ads?

Neither Triangle Calc A nor PipeChecker shows ads.

### Which is updated more often, Triangle Calc A or PipeChecker?

Triangle Calc A ships an update every 56 months, and PipeChecker every 4 months. Most recently, Triangle Calc A was updated on September 10, 2026 and PipeChecker on September 21, 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.*