Comparison

Pulley Calculator vs OpSense Task Checklist

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pulley Calculator

This engineering calculator helps determine belt length, ratio, RPM, and belt speed for pulley systems. It offers instant calculations with copyable results and includes formulas for reference.

Highlights
  • Calculate Belt Length
  • Calculate Ratio
  • Calculate RPM
  • Calculate Belt Speed
  • Instant calculations
  • Copyable results
  • Includes formulas
Features
Read full description

Pulley Calculator is a engineering calculator to calculate Belt Length, Ratio, RPM, Belt Speed, Pulley Gap. Features: - Instant calculation - Result are copy able to other apps - RPM are calculate once one of the RPM[Larger or Small] receive input - Formulas are include as reference A pulley is simply a wheel with a groove in it, and a rope in the groove. It is also called a drum or a sheave. The groove is important because it helps to keep the rope in place. It is used to lift up or lower heavy objects. With a pulley, an object to be lifted can be tied to one end of the rope, and a force is applied to the other end by pulling the rope downwards. The downward force turns the wheel with the rope and pulls the load upwards at the other end. it designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt. In the case of a pulley supported by a frame or shell that does not transfer power to a shaft, but is used to guide the cable or exert a force, the supporting shell is called a block, and the pulley may be called a sheave. A pulley may have a groove or grooves between flanges around its circumference to locate the cable or belt. The drive element of a pulley system can be a rope, cable, belt, or chain. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.

About

OpSense Task Checklist

Features
Read full description

OpSense Checklist is the mobile companion to the OpSense web platform enabling customers to complete checklists essential to running their food services business. Users can easily create configurable checklists that can include functionality such as recording temperatures from a compatible Bluetooth probe, checking off tasks as they are completed, and taking notes on any items that might require additional follow-up. All of the information is synced back to the OpSense web platform where the checklist results can be reviewed for day-to-day operations and stored for future audits.

Screenshots

Pulley Calculator4 screens
OpSense Task Checklist1 screens

Verdict

The call

The clearest difference is price: OpSense Task Checklist at Free against Pulley Calculator's $2.99. OpSense Task Checklist also leads on update cadence (every 2 months vs every 46 months). Pulley Calculator's advantage is iOS requirement (13 vs 16.6). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

OpSense Task Checklist is free to download; Pulley Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Pulley Calculator ships an update every 46 months, OpSense Task Checklist every 2 months. The most recent releases landed on September 18, 2026 and September 19, 2026 respectively.

Scorecard3 real differences · 7 level
Pulley Calculator versus OpSense Task Checklist: the parameters behind the verdict, then further details
ParameterPulley CalculatorOpSense Task Checklist
Price$2.99Free — better
Rating3.7 (34 ratings) — better—
Positive reviews25.0% of reviews—
Number of ratings34 — better—
Update frequencyEvery 46 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13 — better16.6
Further details — not scored
Size1 MB7 MB
Age rating4+4+
DeveloperNitrioOPSENSE, INC.

In-app purchases

None

Pulley Calculator

No in-app purchases

None

OpSense Task Checklist

No in-app purchases

Questions

Is Pulley Calculator free?
Pulley Calculator costs $2.99, with no in-app purchases.
Is OpSense Task Checklist free?
OpSense Task Checklist is free to download, with no in-app purchases.
Do Pulley Calculator or OpSense Task Checklist have ads?
Neither Pulley Calculator nor OpSense Task Checklist shows ads.
Which is updated more often, Pulley Calculator or OpSense Task Checklist?
Pulley Calculator ships an update every 46 months, and OpSense Task Checklist every 2 months. Most recently, Pulley Calculator was updated on September 18, 2026 and OpSense Task Checklist on September 19, 2026.

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