Comparison

Rotely vs Herman

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

Head to head
About

Rotely

Features
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Rotely – Digital Flashcards is a powerful, beautifully designed flashcard app that helps you study smarter, learn faster, and remember for longer. Perfect for exam revision, language learning, university study, professional training and everyday memory practice. • Smarter Study Modes • Full Mode – Review every card in your deck. • Quick Mode – Revise in minutes when you’re short on time. • Improve Mode – Focus on the cards you struggle with most, then intelligently rotate older cards back in to strengthen long-term memory. • AI-Powered Answers Save time creating study sets. Rotely can automatically generate answer suggestions for your flashcard questions using on-device AI. (Requires an Apple Intelligence capable device.) • Rich Media Flashcards • Add images to reinforce visual memory. • Embed videos for demonstrations or explanations. • Use text-to-speech to hear questions and answers aloud — ideal for language learning and pronunciation practice. • Beautiful, Modern Design Sleek, animated cards with smooth flipping, soft shadows and elegant gradients make studying feel engaging and focused. • Unlimited Packs & Easy Sharing • Create unlimited flashcard decks. • Add custom colours, descriptions and author names. • Share packs with others using the new .rotely file format. • iCloud Sync + Native Mac App Your flashcards stay secure and up to date across iPhone, iPad and the new native Mac app with seamless iCloud sync. Whether you’re revising for GCSEs, A-levels, university exams, learning a new language, or building professional knowledge, Rotely keeps your study organised, effective and enjoyable. Learn consistently. Improve intelligently. Remember confidently.

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
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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.

Screenshots

Rotely4 screens
Herman4 screens

Verdict

The call

The clearest difference is price: Rotely at Free against Herman's $2.99. Herman's advantage is update cadence (every 10 days vs every 3 months). On ads, in-app purchases, device support and iOS requirement 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

Rotely 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

Rotely ships an update every 3 months, Herman every 10 days. The most recent releases landed on September 18, 2026 and August 16, 2026 respectively.

Scorecard2 real differences · 7 level
Rotely versus Herman: the parameters behind the verdict, then further details
ParameterRotelyHerman
PriceFree — better$2.99
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.016.6 — better
Further details — not scored
Size3 MB2 MB
Age rating4+4+
DeveloperDACCAAH Valeur

In-app purchases

None

Rotely

No in-app purchases

None

Herman

No in-app purchases

Questions

Is Rotely free?
Rotely is free to download, with no in-app purchases.
Is Herman free?
Herman costs $2.99, with no in-app purchases.
Do Rotely or Herman have ads?
Neither Rotely nor Herman shows ads.
Which is updated more often, Rotely or Herman?
Rotely ships an update every 3 months, and Herman every 10 days. Most recently, Rotely was updated on September 18, 2026 and Herman on August 16, 2026.

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