Comparison

Herman vs Lesson Plan Pro

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

Head to head
About

Herman

This app offers over 300 unique calculators for finance, math, and everyday problems. It provides a user-friendly interface for quick and accurate calculations, working offline for convenience.

Highlights
  • Over 300 unique calculators
  • Finance and business calculations
  • Math and fraction tools
  • Unit conversions (length, mass, time, volume)
  • Offline functionality
  • User-friendly design
Features
Read full description

Say goodbye to complexity and hello to effortless calculations with the Herman Calculator, the ultimate app inspired by the popular web version (https://herman.info). Now packed with even more features and designed to work seamlessly without an Internet connection, it's perfect for users who value reliability on the go.  The Herman Calculator features over 300 unique calculators that cover an extensive range of fundamental quantitative principles. Whether you're managing finances, exploring mathematical concepts, or solving everyday problems, this app is your perfect companion! What can the Herman Calculator calculate? Business Brilliance: Absence Percentage, Attrition Rate, Average Fixed Cost, Bradford Factor, Break-Even, Cap Rate, Capital Gains Yield, Customer Retention, Debt-to-Income Ratio, Expense-to-Income, Lerner Index, Market Capitalization, NOPAT, Parking Ratio, PayPal Fee, Profitability Index, ROI, Sales Tax, Square Fee, Tariff, Utilization Rate, VAT Financial Focus: Amortization, Capital Gains Yield, Car Depreciation, Car Loan Payment, Commission, Credit Card Cost, Discount, Down Payment, Emergency Fund, Expense-to-Income, Future Value Factor, Gratuity, Home Equity, House Affordability, Income Comparison, Mortgage Payment, Present Value Factor, Rent Affordability, Sales Tax, Tip Payment, VAT Fraction Fun: Decimal to Fraction, Fraction to Decimal, Fraction to Percent, Percent to Fraction, Ratio to Fraction, Simplify Fraction Investment Insights: Cap Rate, Capital Gains Yield, Dividend Yield, Hedge Ratio, Home Equity, Market Capitalization, P/E Ratio, Portfolio Return, ROI Length Logic: Conversions between centimeters, feet, inches, kilometers, meters, miles, millimeters, and yards in every possible permutation Mass Made Simple: Grams, kilograms, milligrams, ounces, pounds, and stones—converted into each other to meet every need Math Magic: Absolute Value, Additive Inverse, Circle Measurements, Divisible by, Fibonacci?, Quadratic Equation, Prime Number?, Radian to Degree, Roman Numerals, Significant Figures, and so much more—exploring calculations both basic and complex Percentage Precision: Absence Percentage, Percent Change, Percent Error, Percent of, Percent to Decimal, Plus Percent, Minus Percent, and Fraction to Percent Time Transformations: Days, hours, minutes, months, seconds, weeks, and years—converted in every combination imaginable Volume Variations: Cups, gallons, liters, milliliters, ounces, pints, quarts, tablespoons, and teaspoons—effortlessly transformed to fit your needs Why choose the Herman Calculator? Comprehensive Coverage: Tackle diverse calculations—from fractions to percentages and beyond—all in one app! User-Friendly Design: Intuitive layout ensures ease of use for both professionals and students. Speed Meets Accuracy: Save time while making precise calculations. Whether you're simplifying complex fractions, calculating percentages for work, or diving into mathematical mysteries, the Herman Calculator delivers all the tools you need in a single, sleek package. The app is completely free of advertising, subscription fees, in-app purchases, and user tracking. Simply put, you can enjoy its features without encountering any hidden costs or unexpected interruptions.

About

Lesson Plan Pro

Features
Read full description

Lesson Plan Pro is a modern app designed to simplify lesson plan management – perfect for students, parents, and anyone involved in education. With this app, you always have the latest lesson plan and key school information at your fingertips. The app features a clear and intuitive interface that allows you to quickly check your daily lessons. You can easily add and edit subjects, assign teachers, and mark holidays and special events. Lesson Plan Pro also supports managing multiple schedules simultaneously, which is ideal for siblings or parents who want to keep track of their children's schedules. With support for alternating weeks (A/B) and the ability to set reminders for upcoming classes, you'll never miss an important lesson. Additionally, the widget feature allows you to keep important information on the home screen without having to open the app. Lesson Plan Pro is the perfect solution for anyone who values organization and convenience. Take control of your time and ensure you never miss a class again! Lesson Plan Pro is a modern app designed to help you easily manage your class schedule – perfect for students, parents, and anyone involved in education. With this app, you always have your up-to-date timetable and the most important school information at your fingertips. The app features a clear and intuitive interface, allowing you to quickly check your daily lessons. You can easily add and edit subjects, assign teachers, and mark holidays or special events. Lesson plan pro also supports managing multiple schedules at once, which is ideal for siblings or parents who want to keep track of their children's plans. With support for alternating weeks (A/B) and the option to set reminders for upcoming classes, you'll never miss an important lesson. Additionally, the widget feature lets you keep essential information on your home screen without even opening the app. Lesson plan pro is the perfect solution for anyone who values organization and convenience. Take control of your time and be confident that you'll never miss a class again!

Screenshots

Herman4 screens
Lesson Plan Pro4 screens

Verdict

The call

The clearest difference is price: Lesson Plan Pro at Free against Herman's $2.99. Lesson Plan Pro also leads on iOS requirement (12.0 vs 16.6). Herman's advantage is update cadence (every 10 days vs every 2 months). 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

Lesson Plan Pro is free to download; Herman costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Herman ships an update every 10 days, Lesson Plan Pro every 2 months. The most recent releases landed on August 16, 2026 and September 14, 2026 respectively.

Scorecard3 real differences · 6 level
Herman versus Lesson Plan Pro: the parameters behind the verdict, then further details
ParameterHermanLesson Plan Pro
Price$2.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 10 days — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.612.0 — better
Further details — not scored
Size2 MB30 MB
Age rating4+4+
DeveloperH ValeurGrzegorz Rakoca

In-app purchases

None

Herman

No in-app purchases

None

Lesson Plan Pro

No in-app purchases

Questions

Is Herman free?
Herman costs $2.99, with no in-app purchases.
Is Lesson Plan Pro free?
Lesson Plan Pro is free to download, with no in-app purchases.
Do Herman or Lesson Plan Pro have ads?
Neither Herman nor Lesson Plan Pro shows ads.
Which is updated more often, Herman or Lesson Plan Pro?
Herman ships an update every 10 days, and Lesson Plan Pro every 2 months. Most recently, Herman was updated on August 16, 2026 and Lesson Plan Pro on September 14, 2026.

Other comparisons