Fraction Help Calculator vs Keystone Pump TDH Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fraction Help Calculator
This utility app simplifies fraction calculations and provides step-by-step solutions for addition, subtraction, multiplication, and division. It also facilitates conversions between decimals and fractions, and helps find factors of numbers.
- Solve fraction equations
- View detailed working
- Work with mixed fractions
- Convert between decimal and fraction
- Find factors of numbers
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Makes solving & learning fractions easy! Fraction Help is a fraction calculator & educational tool that enables you to quickly solve fraction problems. Features Include: - Accurately solve fraction equations (addition, subtraction, multiplication & division) - View detailed working, to learn how the final answered was determined - Work with mixed/partial fractions - Easily convert between decimal and fractional values - Quickly find the factors of a given numbers or the common factors of two values
Keystone Pump TDH Calculator
This utility app assists engineers and technical personnel in calculating system parameters for slurry pipe and pump sizing. It computes required head pressure and limiting settling velocity based on user-inputted system data. The tool aims to simplify the selection process for slurry pumps.
- Slurry Density Calculation
- Limiting Settling Velocity Calculation
- Slurry Head & Equivalent Water Head Calculation
- Pipe Type and Size Database
- NPSHA Calculation
- US and Metric Units
- Save Calculation Results
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Keystone Pumps - Keystone Pump TDH Calculator was created to assist Engineers and Technical Personnel with system calculations required for the sizing of slurry pipe systems and slurry pumps. Our program allows the user to simply enter in basic system parameters and our program will calculate the required head pressure and limiting settling velocity. Our desire is to provide our customers with a dynamic tool that allows for ease of selecting slurry pumps. Features: • Supports iOS10 • Built in Slurry Density Calculation • Limiting Settling Velocity Calculation • Slurry Head & Equivalent Water Head Calculation • Built in Pipe Type and Size Database • Entry and Saving of Customer Pipe Sizes • Built in Pipe Fittings Visual Selection Database • Entry and Saving of Custom Pipe Fittings • NPSHA Calculation • US and Metric Units • Saving of Individual Calculation Results • E-Mailing of Individual Calculation Results
Screenshots
Verdict
Fraction Help Calculator and Keystone Pump TDH Calculator both sit at 4.8 stars, but that hides the real split: 100% of Keystone Pump TDH Calculator's written reviews are positive against 50% of Fraction Help Calculator's. Keystone Pump TDH Calculator also leads on price (Free vs $2.99) and update cadence (every 6 months vs every 13 months). Fraction Help Calculator's advantage is ratings volume (12 vs 1) and device support (3 vs 1). On rating, ads and in-app purchases 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
Keystone Pump TDH Calculator is free to download; Fraction Help Calculator costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Keystone Pump TDH Calculator holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Fraction Help Calculator has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 50% of Fraction Help Calculator's written reviews are positive against 100% of Keystone Pump TDH Calculator's.
Fraction Help Calculator ships an update every 13 months, Keystone Pump TDH Calculator every 6 months. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.
| Parameter | Fraction Help Calculator | Keystone Pump TDH Calculator |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.8 (12 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 12 — better | 1 |
| Update frequency | Every 13 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 4 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Armchair Engineering | Keystone Pumps LTD |
Customer experience
Fraction Help Calculator
Keystone Pump TDH Calculator
In-app purchases
Fraction Help Calculator
No in-app purchases
Keystone Pump TDH Calculator
No in-app purchases
Questions
Is Fraction Help Calculator free?
Is Keystone Pump TDH Calculator free?
Which has better reviews, Fraction Help Calculator or Keystone Pump TDH Calculator?
Do Fraction Help Calculator or Keystone Pump TDH Calculator have ads?
Which is updated more often, Fraction Help Calculator or Keystone Pump TDH Calculator?
Other comparisons
