# Navisizer vs BlueBoost Mobile

The clearest difference is review sentiment: BlueBoost Mobile at 100% against Navisizer's 13%. BlueBoost Mobile also leads on rating (5.0 vs 2.4) and update cadence (monthly vs every 4 months). Navisizer's advantage is ratings volume (26 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BlueBoost Mobile holds the better App Store score, 5.0 against 2.4. That said, the two scores are not equally well evidenced: Navisizer has 26 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 13% of Navisizer's written reviews are positive against 100% of BlueBoost Mobile's.

Navisizer ships an update every 4 months, BlueBoost Mobile monthly. The most recent releases landed on October 5, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Navisizer | BlueBoost Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (26 ratings)](https://appshunter.io/ios/app/navisizer/id1327385997/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/blueboost-mobile/id6752962775/reviews)** |
| Number of ratings | **26** | 2 |
| Positive reviews | 12.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Free | Free |
| Size | 21 MB | 31 MB |
| Requires iOS | 17.2 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Navien](https://appshunter.io/developer/1327385996) | [bluecollarai](https://appshunter.io/developer/1841978296) |

## What reviewers say

### Navisizer

[App page](https://appshunter.io/ios/app/navisizer/id1327385997)

This app helps size domestic hot water heating systems for residential and commercial use. It calculates operating costs, savings, and generates comprehensive job specifications for Navien NPE Series tankless water heaters.

**Highlights:** Residential system sizing, Operating cost and savings calculation, Commercial application sizing (ASHRAE Hunter Curve), Tankless and tankless with storage solutions, Comprehensive job specification output, Save, print, or email system specs

**Features:** macOS Compatibility

**In-app purchases:** none


### BlueBoost Mobile

[App page](https://appshunter.io/ios/app/blueboost-mobile/id6752962775)

This app streamlines documentation for service professionals during home visits. It uses AI to quickly generate estimates and invoices, automate customer responses, and organize all project details in one place. Enhance your professional image and save time on administrative tasks.

**Highlights:** AI-Powered Estimates & Invoices, Smart Automation for Customer Responses, Organized Project Dashboard, Professional Client Communication, Time-Saving Paperwork Automation

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

**In-app purchases:** none


## Frequently asked questions

### Is Navisizer free?

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

### Is BlueBoost Mobile free?

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

### Which has better reviews, Navisizer or BlueBoost Mobile?

BlueBoost Mobile is rated higher. Navisizer averages 2.4 out of 5 from 26 ratings, while BlueBoost Mobile averages 5.0 from 2 ratings.

### Do Navisizer or BlueBoost Mobile have ads?

Neither Navisizer nor BlueBoost Mobile shows ads.

### Which is updated more often, Navisizer or BlueBoost Mobile?

Navisizer ships an update every 4 months, and BlueBoost Mobile monthly. Most recently, Navisizer was updated on October 5, 2026 and BlueBoost Mobile on October 2, 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.*