# Boiler Efficiency vs Fastener Dimensions

The clearest difference is price: Fastener Dimensions at $4.99 against Boiler Efficiency's $5.99. Fastener Dimensions also leads on iOS requirement (12.0 vs 14.3). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

Boiler Efficiency costs $5.99 and Fastener Dimensions $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Boiler Efficiency ships an update every 10 months, Fastener Dimensions every 6 months. The most recent releases landed on October 3, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Boiler Efficiency | Fastener Dimensions |
| --- | --- | --- |
| Price | $5.99 | **$4.99** |
| Rating | — | **[1.0 (2 ratings)](https://appshunter.io/ios/app/fastener-dimensions/id6476143105/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Size | 2 MB | 62 MB |
| Requires iOS | 14.3 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [Ajay Gorasiya](https://appshunter.io/developer/1455174866) |

## What reviewers say

### Boiler Efficiency

[App page](https://appshunter.io/ios/app/boiler-efficiency/id490506363)

Perform preliminary audits on boiler efficiency and identify various losses in steam generation. Customize boiler applications, compare fuel grades, and analyze heat balance and flue gas for potential savings and improvements.

**Highlights:** Boiler efficiency audits, Loss identification, Customizable boiler applications, Fuel grade comparison, Heat balance sheet, Flue gas analysis, CHP (Brayton) cycle analysis

**Features:** macOS Compatibility

**In-app purchases:** none


### Fastener Dimensions

[App page](https://appshunter.io/ios/app/fastener-dimensions/id6476143105)

This app provides a comprehensive guide to various types of fasteners, including bolts, nuts, pins, and washers. Explore diverse options and dimensions to meet specific project requirements and enhance your understanding of these essential components.

**Highlights:** Dimensions of bolts, nuts, pins, and washers, Variety of bolt types (e.g., countersunk, hex head flange), Range of nut types (e.g., hex, wing), Intricacies of pin types (e.g., clevis, cylindrical, tapered), Choices of washer types (e.g., plain, spring), Guide for project requirements

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Boiler Efficiency free?

Boiler Efficiency costs $5.99, with no in-app purchases.

### Is Fastener Dimensions free?

Fastener Dimensions costs $4.99, with no in-app purchases.

### Do Boiler Efficiency or Fastener Dimensions have ads?

Neither Boiler Efficiency nor Fastener Dimensions shows ads.

### Which is updated more often, Boiler Efficiency or Fastener Dimensions?

Boiler Efficiency ships an update every 10 months, and Fastener Dimensions every 6 months. Most recently, Boiler Efficiency was updated on October 3, 2026 and Fastener Dimensions on October 11, 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.*