TLV ToolBox vs Linear Interpolation Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TLV ToolBox
This utility app transforms your mobile device into a portable steam calculation tool. It assists with onsite calculations for control valve stations, condensate recovery systems, and various maintenance tasks, reducing the need for multiple trips.
- Steam Tables (saturated and superheated)
- Steam Pipe Sizing
- Condensate Pipe Sizing
- Heating Calculations
- Cv and Kv Values
- Stall Point
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Turn your mobile device into a light & portable steam calculation tool with TLV Toolbox. Reduce trips back and forth while working onsite with this valuable tool. Helpful for design or everyday maintenance of control valve stations, condensate recovery systems, and much more! ************************* FEATURES: - Steam Tables (saturated and superheated) - Steam Pipe Sizing - Condensate Pipe Sizing - Heating Calculations - Cv and Kv Values - Stall Point - and more... ************************* * About Us * TLV is internationally established, with companies in 13 countries. A network of over 100 distributors in more than 50 countries enables the speedy provision of engineering support throughout the world. TLV plays a leading role in the promotion of efficient energy systems and increased environmental conservation on a worldwide scale through its original products and services. For further information visit: www.tlv.com Contact us: https://www.tlv.com/global/US/contact-us/contact-form.html
Linear Interpolation Master
This tool simplifies linear interpolation calculations for industrial commissioning engineers. It features large, easily readable numbers for field use and allows for quick swapping of coordinate systems, such as converting between 4-20mA and 0-100% scales.
- Large number display for field visibility
- Quickly swap X and Y coordinates
- 4-20mA to 0-100% conversion
- 0-100% to 4-20mA conversion
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A linear interpolation calculator designed for industrial commissioning engineers. It has the following features: - Displays large numbers for when you are out in the field commissioning. - Allows quickly swapping x and y coordinates; for example from 4-20mA -> 0-100% to 0-100% -> 4-20mA.
Screenshots
Verdict
The clearest difference is in-app purchases: TLV ToolBox at none against Linear Interpolation Master's 3. TLV ToolBox also leads on ads (none vs shown) and review sentiment (75% vs 63%). Linear Interpolation Master's advantage is ratings volume (176 vs 8) and rating (4.7 vs 4.5). On price, update cadence and device support 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. Linear Interpolation Master sells 3 one-off in-app purchases. TLV ToolBox asks for nothing beyond the download.
Linear Interpolation Master holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Linear Interpolation Master has 176 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 75% of TLV ToolBox's written reviews are positive against 63% of Linear Interpolation Master's, so the app with the better star average is not the one people write more warmly about.
TLV ToolBox ships an update every 4 months, Linear Interpolation Master every 5 months. The most recent releases landed on June 6, 2026 and September 27, 2026 respectively.
| Parameter | TLV ToolBox | Linear Interpolation Master |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (8 ratings) | 4.7 (176 ratings) — better |
| Positive reviews | 75.0% of reviews — better | 62.5% of reviews |
| Number of ratings | 8 | 176 — better |
| Update frequency | Every 4 months — better | Every 5 months |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.3 — better | 11.0 |
| Further details — not scored | ||
| Size | 4 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | TLV CO.,LTD. | VERVE TECHNOLOGIES PTY. LTD. |
Customer experience
TLV ToolBox
Linear Interpolation Master
In-app purchases
TLV ToolBox
No in-app purchases
Linear Interpolation Master
- Generous Tip$2.99
- Massive Tip$3.99
- Amazing Tip$4.99
Questions
Is TLV ToolBox free?
Is Linear Interpolation Master free?
Which has better reviews, TLV ToolBox or Linear Interpolation Master?
Do TLV ToolBox or Linear Interpolation Master have ads?
Which is updated more often, TLV ToolBox or Linear Interpolation Master?
Other comparisons
