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Best Prefresh Pen Size Calculator Apps

227+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated June 2026

With an average user rating of 4.4★, the prefresh pen size calculator category is one of the App Store's strongest. Browse all 227+ apps we track, sorted so the most loved ones surface first.

Top Picks for Prefresh Pen Size Calculator

ClevCalc - Calculator#2

ClevCalc - Calculator by Cleveni Inc.

All-In-One Calculator
Strong Contender
📊 Productivity
4.7😊(12K ratings)
FreeAdsIn-App Purchases
ClevCalc - Calculator screenshot 1
ClevCalc - Calculator screenshot 2
ClevCalc - Calculator screenshot 3
ClevCalc - Calculator screenshot 4
ClevCalc - Calculator screenshot 5
ClevCalc - Calculator screenshot 6

This comprehensive calculator app offers a wide range of tools for everyday calculations, from basic arithmetic and scientific functions to unit and currency conversions. It includes specialized calculators for loans, health, fuel costs, GPA, and more, all within a clean and user-friendly interface.

What We Love

  • 👍 Easy to use
  • 🚀 Efficient calculations
  • 💡 Versatile features (currency, unit conversions, etc.)
  • 👍 Intuitive interface

Room to Improve

  • 💰 Subscription model too expensive
  • 🔍 Ads can be intrusive
  • 🐛 Occasional UI issues (e.g. ads blocking functionality)
Cattle Market Mobile#3

Cattle Market Mobile by CattleSync, LLC

Market Reports, Futures & More
Worth Considering
💼 Business
4.7😊(8.6K ratings)
FreeAdsIn-App Purchases
Cattle Market Mobile screenshot 1
Cattle Market Mobile screenshot 2
Cattle Market Mobile screenshot 3

Monitor US cattle market data with USDA and local market reports. Access commodity futures, and utilize tools like profit/loss and LRP calculators to aid producers.

What We Love

  • 👍 Good app
  • 🚀 Useful tool
  • 🚀 Helpful for cattlemen
  • 👍 Easy to navigate

Room to Improve

  • 🐛 Crashes/freezes
  • 💰 Subscription fees
  • 💰 Prices not accurate for small producers

More Prefresh Pen Size Calculator apps to explore

4
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
OneCalc: All-in-one Calculator
Calculates everything. Try it.
Free

This app offers a comprehensive suite of over 40 calculators and unit converters for various needs, including finance, health, construction, and everyday math. It features standard, scientific, and specialized calculators for tasks like loan amortization, currency conversion, and material estimation.

Over 40 calculators and unit convertersStandard and scientific calculator functionsFinancial calculators (interest, loan, currency)
📊 Productivity
(4.8K)
free with in-app purchases
5
Tank Mix Calculator
Tank Mix Calculator
Tank Mix Calculator
by TapLogic, LLC
Free

This farm app helps users quickly calculate the correct amounts of chemicals needed for spraying crops. It allows for custom chemical entries and provides detailed mixing instructions for full and partial loads based on acreage and tank size.

Calculate spray tank mixesEnter acreage, tank size, and carrier volumeSelect chemicals from a list
🔧 Utilities
(21)
free
6
Landscaping Calculator Plus
Landscaping Calculator Plus
Landscaping Calculator Plus
by Inch Calculator
Free

Easily estimate landscaping materials like gravel, soil, mulch, and concrete. Supports multiple units of measurement for accurate project planning. Ideal for DIYers and professionals.

10 landscaping material calculatorsEstimate gravel, soil, mulch, concreteSupports inches, feet, yards, cm, meters
🔧 Utilities
(2.8K)
ad-supported
7
Soil Calculator Plus
Soil Calculator Plus
Soil Calculator Plus
by Inch Calculator
Free

Easily estimate the volume of soil, topsoil, dirt, and landscaping materials needed for any project. Supports various area shapes and multiple measurement units, providing results in multiple volume and weight formats, including the number of bags.

Estimate soil volumeSupports rectangular and circular areasMultiple measurement units (inches, feet, yards, cm, meters)
🔧 Utilities
(668)
ad-supported
8
CalcBox -All in One Calculator
CalcBox -All in One Calculator
CalcBox -All in One Calculator
Multipurpose calculator
Free

This app combines numerous essential calculation tools into a single, user-friendly interface. It handles everything from basic arithmetic and unit conversions to financial planning, health tracking, and academic performance. Simplify your daily tasks with this comprehensive utility.

Basic and scientific calculationsExtensive unit and currency conversionFinancial calculators (loan, deposit, tip, discount)
🔧 Utilities
(347)
free with in-app purchases
9
MSUES Cattle Calculator
MSUES Cattle Calculator
MSUES Cattle Calculator
by Mississippi State University Extension Service
Free

This app assists beef cattle producers with essential daily calculations for reproductive management, animal performance, and operational decisions. It offers tools for breeding and calving dates, weight adjustments, medication dosages, and more.

Reproductive management calculationsAnimal performance trackingDewormer and medicine dosage calculations
📚 Education
(4)
free
10
NRC Calculator
NRC Calculator
NRC Calculator
Estimate calf weight gain
Free

This tool helps estimate calf weight gain by calculating energy and protein allowances based on feed inputs. It allows for side-by-side comparison of different feeding strategies and provides results in metric or imperial units.

Estimate energy and protein allowable average daily gainAnalyze milk replacer, whole milk, or combination dietsCompare two feeding strategies side-by-side
🔧 Utilities
(2)
free
11
Vetcalculators
Vetcalculators
Vetcalculators
The Veterinary Calculator
Free

This app provides veterinarians and staff with a comprehensive suite of calculators for drug dosages, medical measurements, and patient assessments. It also includes a wide range of veterinary references for quick access to essential information.

Drug dose calculatorsEmergency drug dosagesFluid therapy rates
🏥 Medical
(584)
subscription
12
Nexus Cattle Calculator
Nexus Cattle Calculator
Nexus Cattle Calculator
by NFO Inc.
Free

This tool helps cattle producers understand their operation's profitability by calculating costs of gain, cost of production, and reverse breakeven prices. It tracks expenses like feed, vet, and yardage, and remembers previous entries for convenience. Make informed decisions and improve financial relationships with lenders.

Reverse breakeven calculatorFed cattle cost of gainTraditional cost of production
🔧 Utilities
(7)
free
13
FarmKeep
FarmKeep
FarmKeep
Farm and livestock management
Free

Manage all aspects of your farm, from animal records and breeding to production, finances, and land mapping. This app supports hobbyists and small to mid-size businesses, offering features like task reminders and multi-member access.

Animal records and health trackingBreeding management with automated calculationsProduction yield tracking (eggs, milk, honey)
📊 Productivity
(187)
free with in-app purchases
14
SureFire Ag Flow Calculator
SureFire Ag Flow Calculator
SureFire Ag Flow Calculator
by SureFire Ag Systems
Free

Calculate application rates and pump speeds for agricultural implements. This tool suggests appropriate pumps and orifice sizes based on your input, aiding in precise agricultural applications.

Rate per row calculationTotal pump rate calculationPump suggestion based on application
📊 Productivity
(1)
free
15
Preg Calculator
Preg Calculator
Preg Calculator
by University of Wisconsin - Madison School of Veterinary Medicine
Free
📚 Education
(0)
16
DailyCalcs - Science calculator to simplify everyday tasks in the lab
DailyCalcs - Science calculator to simplify everyday tasks in the lab
DailyCalcs - Science calculator to simplify everyday tasks in the lab
by Thermo Fisher Scientific
Free

This app provides a suite of science calculators designed to simplify laboratory tasks. It includes tools for molarity, dilutions, molecular weight, cell culture, unit conversions, and specific scientific calculations for cell culture and transfection experiments.

Specific Productivity CalculatorTransfection CalculatorMolarity Calculator
🔧 Utilities
(5)
free
17
Protein Supplement Calculator
Protein Supplement Calculator
Protein Supplement Calculator
by Utah State University
Free
🔧 Utilities
(0)
18
Climate FieldView™
Climate FieldView™
Climate FieldView™
by The Climate Corporation
Free

This integrated digital agriculture tool offers farmers a connected suite of resources to gain a deeper understanding of their fields. It helps optimize yields, maximize efficiency, and reduce risk by enabling data-driven decisions throughout the year.

Integrated digital agriculture toolsComprehensive field data collectionMonitor agronomic decision impact
💼 Business
(168)
free with in-app purchases
19
Livestock Gestation Calculator
Livestock Gestation Calculator
Livestock Gestation Calculator
Accurate and easy to use
Free

Easily determine the average birth date for your livestock by selecting the breeding date. This tool offers accurate calculations for various animal types.

Select breeding dateAutomatic birth date calculationSupports various livestock options
🔧 Utilities
(12)
free
20
NDSU Grazing Calculator
NDSU Grazing Calculator
NDSU Grazing Calculator
by North Dakota State University
Free
🔧 Utilities
(0)