# Navisizer vs CoolCalc Scan

The clearest difference is update cadence: CoolCalc Scan at every 4 weeks against Navisizer's every 4 months. CoolCalc Scan also leads on rating (2.6 vs 2.4). Navisizer's advantage is review sentiment (13% vs 0%) and monetization model (free vs ad-supported). On price, ads, in-app purchases and device support there is nothing between them.

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

CoolCalc Scan holds the better App Store score, 2.6 against 2.4. Both are backed by a comparable volume of ratings — 26 and 7 respectively. Written reviews complicate that: 13% of Navisizer's written reviews are positive against 0% of CoolCalc Scan's, so the app with the better star average is not the one people write more warmly about.

Navisizer ships an update every 4 months, CoolCalc Scan every 4 weeks. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Navisizer | CoolCalc Scan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (26 ratings)](https://appshunter.io/ios/app/navisizer/id1327385997/reviews) | **[2.6 (7 ratings)](https://appshunter.io/ios/app/coolcalc-scan/id6738354891/reviews)** |
| Number of ratings | **26** | 7 |
| Positive reviews | **12.5% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 21 MB | 11 MB |
| Requires iOS | **17.2** | 17.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Navien](https://appshunter.io/developer/1327385996) | [Cool Calc Inc.](https://appshunter.io/developer/1878735367) |

## 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


### CoolCalc Scan

[App page](https://appshunter.io/ios/app/coolcalc-scan/id6738354891)

Capture precise 3D room scans using your device's LiDAR sensor. Organize projects, integrate with a web platform for advanced visualization, and export models in industry-standard formats. Ideal for professionals needing accurate spatial data.

**Highlights:** Precise LiDAR scanning, Detailed 3D model capture, Project organization, CoolCalc platform integration, Industry-standard export formats, Multi-room scanning

**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 CoolCalc Scan free?

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

### Which has better reviews, Navisizer or CoolCalc Scan?

CoolCalc Scan is rated higher. Navisizer averages 2.4 out of 5 from 26 ratings, while CoolCalc Scan averages 2.6 from 7 ratings.

### Do Navisizer or CoolCalc Scan have ads?

Neither Navisizer nor CoolCalc Scan shows ads.

### Which is updated more often, Navisizer or CoolCalc Scan?

Navisizer ships an update every 4 months, and CoolCalc Scan every 4 weeks. Most recently, Navisizer was updated on October 5, 2026 and CoolCalc Scan on October 1, 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.*