# Boiler Efficiency vs Acceleration Calculator Plus

The clearest difference is price: Acceleration Calculator Plus at $2.99 against Boiler Efficiency's $5.99. Boiler Efficiency's advantage is update cadence (every 10 months vs every 20 months) and iOS requirement (14.3 vs 17.6). On ads, in-app purchases and device support there is nothing between them.

Boiler Efficiency costs $5.99 and Acceleration Calculator Plus $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Boiler Efficiency ships an update every 10 months, Acceleration Calculator Plus every 20 months. The most recent releases landed on September 16, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Boiler Efficiency | Acceleration Calculator Plus |
| --- | --- | --- |
| Price | $5.99 | **$2.99** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 20 months |
| Monetization | Paid | — |
| Size | 2 MB | 1 MB |
| Requires iOS | **14.3** | 17.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Kaup Shenoy Associates](https://appshunter.io/developer/460148822) | [Nitrio](https://appshunter.io/developer/321121189) |

## 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


### Acceleration Calculator Plus

[App page](https://appshunter.io/ios/app/acceleration-calculator-plus/id1658922875)

**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 Acceleration Calculator Plus free?

Acceleration Calculator Plus costs $2.99, with no in-app purchases.

### Do Boiler Efficiency or Acceleration Calculator Plus have ads?

Neither Boiler Efficiency nor Acceleration Calculator Plus shows ads.

### Which is updated more often, Boiler Efficiency or Acceleration Calculator Plus?

Boiler Efficiency ships an update every 10 months, and Acceleration Calculator Plus every 20 months. Most recently, Boiler Efficiency was updated on September 16, 2026 and Acceleration Calculator Plus on September 5, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*