TVS Diode Array Product Selector vs Hydraulic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TVS Diode Array Product Selector
This app helps you find the right TVS Diode Array for your electronic circuits. It asks a few questions about your application to recommend the best product for ESD and lightning surge protection. You can also request samples and access datasheets.
- Product recommendation based on application needs
- Sample requests
- View product information and characteristics
- Download datasheets
- Access design resources
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The Littelfuse TVS Diode Array Product Selector App provides product recommendation based on the response to a few simple questions about your application. TVS Diode Arrays are used to protect sensitive electronic circuits from ESD & Lightning Surge transients. Request samples from Littelfuse, view product information, characteristics, and download datasheet. Additional design resources are available at www.littelfuse.com/spa (http://www.littelfuse.com/spa) or send an e-mail to spa@littelfuse.com
Hydraulic
Perform essential hydraulic calculations for cylinders, pumps, and fluid lines. Solve for forces, speeds, torque, power, and pressure drop. Supports metric and imperial units, with advanced features unlocked via in-app purchase.
- Cylinder force and speed calculations
- Pump displacement, flow, and pressure calculations
- Hydraulic line fluid velocity and pressure drop
- Orifice flow and pressure calculations
- Speed, torque, and power calculations
- Metric and imperial unit support
- Copy results to clipboard
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The Hydraulic Calculator includes many basic hydraulic calculations. Cylinder calculations can be done to solve for extension / retraction forces or speeds. Pump calculations can also be done by entering combinations of displacement, oil flow and pressure to determine values for speed, torque and power. Both mechanical and volumetric efficiencies can be used in these calculations. Hydraulic line calculations can also be done for fluid velocity, cross sectional area, Reynolds number and pressure drop. The free version is limited to 1” or 25mm line diameters. Orifice calculations can also be made using three parameters: Oil Flow, Orifice Diameter and Pressure Drop. Enter any two values and have the third calculated. Speed - Torque - Power page: Enter any two values have the third calculated. Unit conversions built into the page. Calculations can be done in either metric or imperial units. Basic unit conversions are also available. With the in-app purchase, all features from the Hydraulic Calculator will become active: Cylinder characteristics can be entered in a number of different ways. Enter hydraulic flow, cylinder velocity, or stroke time and calculate the other two. User can also enter Hydraulic pressure, extend force or retract force and have the other two calculated. One application for this is to measure the stroke time of a cylinder. By entering this with the bore diameter and stroke length, the system flow is calculated. Full motor & pump calculation page. The motor & pump calculator are flexible tools in which the user can enter any three known values to have the remaining values calculated. Values include: displacement, oil flow, pressure, rotational speed, torque, and motor power. Both mechanical and volumetric efficiency values are used. Results can be copied to the clipboard in a text format for use in e-mails, messages, or other documentation.
Screenshots
Verdict
The clearest difference is review sentiment: TVS Diode Array Product Selector at 100% against Hydraulic's 50%. TVS Diode Array Product Selector also leads on rating (5.0 vs 4.2) and in-app purchases (none vs 2). Hydraulic's advantage is update cadence (every 6 weeks vs every 6 months) and ratings volume (16 vs 1). On price, ads 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. Hydraulic sells 2 one-off in-app purchases. TVS Diode Array Product Selector asks for nothing beyond the download.
TVS Diode Array Product Selector holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Hydraulic has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of TVS Diode Array Product Selector's written reviews are positive against 50% of Hydraulic's.
TVS Diode Array Product Selector ships an update every 6 months, Hydraulic every 6 weeks. The most recent releases landed on September 30, 2026 and September 23, 2026 respectively.
| Parameter | TVS Diode Array Product Selector | Hydraulic |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.2 (16 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 1 | 16 — better |
| Update frequency | Every 6 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.4 — better | 15.1 |
| Further details — not scored | ||
| Size | 8 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Littelfuse, Inc. | Zanthic Automation Inc. |
Customer experience
TVS Diode Array Product Selector
Hydraulic
In-app purchases
TVS Diode Array Product Selector
No in-app purchases
Hydraulic
- Full Version$7.99
- Pro Version$7.99
Questions
Is TVS Diode Array Product Selector free?
Is Hydraulic free?
Which has better reviews, TVS Diode Array Product Selector or Hydraulic?
Do TVS Diode Array Product Selector or Hydraulic have ads?
Which is updated more often, TVS Diode Array Product Selector or Hydraulic?
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