# Gasket Master Flexitallic vs Stair Calculator

The clearest difference is review sentiment: Gasket Master Flexitallic at 100% against Stair Calculator's 21%. Gasket Master Flexitallic also leads on rating (5.0 vs 4.1) and in-app purchases (none vs 2). Stair Calculator's advantage is update cadence (every 3 months vs every 62 months) and ratings volume (740 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Stair Calculator sells 2 in-app purchases, starting at $9.99 per year. Gasket Master Flexitallic asks for nothing beyond the download.

Gasket Master Flexitallic holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Stair Calculator has 740 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Gasket Master Flexitallic's written reviews are positive against 21% of Stair Calculator's.

Gasket Master Flexitallic ships an update every 62 months, Stair Calculator every 3 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Gasket Master Flexitallic | Stair Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/gasket-master-flexitallic/id1133888600/reviews)** | [4.1 (740 ratings)](https://appshunter.io/ios/app/stair-calculator-construction/id1493037366/reviews) |
| Number of ratings | 2 | **740** |
| Positive reviews | **100.0% of reviews** | 21.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 62 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 17 MB | 1 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Espresso Moon](https://appshunter.io/developer/1133888599) | [Phan Nhat Đang](https://appshunter.io/developer/1437390098) |

## What reviewers say

### Gasket Master Flexitallic

[App page](https://appshunter.io/ios/app/gasket-master-flexitallic/id1133888600)

This utility app allows users to easily search for and bookmark specific industrial sealing products. It facilitates the process of identifying desired items for later purchase. The application is designed for efficient product discovery and organization.

**Highlights:** Product search functionality, Bookmark favorite products, Streamlined ordering process, Product catalog access

**Features:** macOS Compatibility

**In-app purchases:** none


### Stair Calculator

[App page](https://appshunter.io/ios/app/stair-calculator-construction/id1493037366)

This app calculates essential parameters for stair construction, offering flexibility in input and providing multiple step set options. It supports various units and allows results to be easily copied.

**Highlights:** Calculate stair construction parameters, Flexible input for Run or Total Run, Determine largest and smallest step sets, Support for various units, Copy results to clipboard

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Premium Package | $9.99 | per year |
| Unlock all features | $5.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Helpful information
- 🚀 Provides useful calculations

**What reviewers complain about**

- 🐛 Doesn't work as expected
- 🔒 No way to cancel subscription
- 🔒 Difficult to cancel trial
- 🤬 Obnoxious ads
- 🤬 Misleading as a learning tool

**Reported bugs**

- Subscription numbers don't add up
- Doesn't provide promised features after purchase

**Requested features**

- Option to uninstall app
- Ability to calculate run based on rise and landing space
- Provide more detailed diagrams and visuals


## Frequently asked questions

### Is Gasket Master Flexitallic free?

Gasket Master Flexitallic is free to download, with no in-app purchases.

### Is Stair Calculator free?

Stair Calculator is free to download, with in-app purchases available.

### Which has better reviews, Gasket Master Flexitallic or Stair Calculator?

Gasket Master Flexitallic is rated higher. Gasket Master Flexitallic averages 5.0 out of 5 from 2 ratings, while Stair Calculator averages 4.1 from 740 ratings.

### Do Gasket Master Flexitallic or Stair Calculator have ads?

Neither Gasket Master Flexitallic nor Stair Calculator shows ads.

### Which is updated more often, Gasket Master Flexitallic or Stair Calculator?

Gasket Master Flexitallic ships an update every 62 months, and Stair Calculator every 3 months. Most recently, Gasket Master Flexitallic was updated on November 6, 2026 and Stair Calculator on November 3, 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.*