Taco Tools vs Navisizer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Taco Tools
Easily select centrifugal pumps for hydronic heating and cooling systems. View pump performance characteristics for specific flow and head conditions. Access Taco product literature and contact technical support directly.
- Centrifugal pump selection
- Performance characteristic viewing
- Hydronic heating/cooling system application
- Access to product literature
- Direct technical support contact
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An application for the selection of Centrifugal Pumps manufactured by Taco, Inc. This application allows the user to quickly select a pump for application to Hydronic Heating and/or Cooling Systems and view the performance characteristics of the selected pump for a specified Flow & Head Condition. In addition, this App will allow users easy access to all published Taco Product Literature and direct access to the Taco Technical Support Department.
Navisizer
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.
- 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
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NaviSizer is designed to assist with sizing of domestic hot water heating systems with Navien NPE Series tankless water heaters. For residential applications, NaviSizer offers system sizing, calculation of operating cost and savings, and provides a comprehensive output to be used as a job spec. For commercial applications, NaviSizer uses ASHREA Hunter Curve calculations to size a broad range of applications. Both tankless and tankless with storage solutions are offered along with a comprehensive system spec that can be saved, printed, or emailed.
Screenshots
Verdict
The clearest difference is iOS requirement: Taco Tools at 15.6 against Navisizer's 17.2. On price, review sentiment, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Taco Tools ships an update every 5 months, Navisizer every 4 months. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.
| Parameter | Taco Tools | Navisizer |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.4 (26 ratings) — better |
| Positive reviews | 20.0% of reviews — better | 12.5% of reviews |
| Number of ratings | — | 26 — better |
| Update frequency | Every 5 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.2 |
| Further details — not scored | ||
| Size | 52 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Taco, Inc. | Navien |
Customer experience
Taco Tools
Navisizer
In-app purchases
Taco Tools
No in-app purchases
Navisizer
No in-app purchases
Questions
Is Taco Tools free?
Is Navisizer free?
Do Taco Tools or Navisizer have ads?
Which is updated more often, Taco Tools or Navisizer?
Other comparisons
