Comparison

Percentage Value Calculator vs knowra

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

Head to head
About

Percentage Value Calculator

Easily calculate percentages with detailed step-by-step solutions. Input any two variables to find the third, with support for fractions and decimals. All calculations are saved in a history that can be managed and shared.

Highlights
  • Percentage calculation
  • Detailed solution steps
  • History function
  • Support for fractions and decimals
  • Option to remove ads
  • Swipe navigation
Features
Read full description

Finish your homework instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your values and calculate base value, percentage value, and percentage rate. HOW IT WORKS Enter your values into the appropriate fields and get started. You’ll receive the solution instantly and can share it with friends or classmates. YOUR DATA We don’t need it. Only anonymized data is collected, such as: - which features are used - how many solutions are generated This helps us improve. No conclusions can be drawn about you. COSTS Everything is free to use. 24/7 access to your solutions. All solution steps remain fully available at all times. If you need many solutions in a short time, various purchase options are available. EXTRAS - Curated learning videos - Feedback on incorrect inputs - Manage your own solutions - App introduction CONTACT Questions and feedback via Discord or directly in the app review.

About

knowra

Features
Read full description

Knowra helps you quickly screen research papers and focus on what is worth reading. Discover: - Swipeable paper cards for fast keep-or-skip decisions - Personalized feed based on your fields and goals - Clear at-a-glance signals to support fast judgment Scout: - Open Scout for structured paper briefs - Read key points first, then decide whether to go deeper Library: - Save papers you care about and revisit them anytime - Search and filter your saved list by keywords and categories - Open the original source when you are ready for full reading Account & Sync: - Sign in with Email OTP, Apple, or Google - Keep preferences and activity synced across sessions Knowra is built for researchers, engineers, and students who want to stay current without information overload. Privacy Policy: https://knowra.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Percentage Value Calculator4 screens
knowra4 screens

Verdict

The call

The clearest difference is update cadence: Percentage Value Calculator at every 3 weeks against knowra's every 7 months. Percentage Value Calculator also leads on device support (3 vs 1) and iOS requirement (15.0 vs 26.0). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Percentage Value Calculator sells 8 one-off in-app purchases and knowra sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Percentage Value Calculator ships an update every 3 weeks, knowra every 7 months. The most recent releases landed on October 24, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Percentage Value Calculator versus knowra: the parameters behind the verdict, then further details
ParameterPercentage Value Calculatorknowra
PriceFreeFree
Rating4.0 (4 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 3 weeks — betterEvery 7 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size180 MB11 MB
Age rating4+12+
DeveloperGlindemann, Sennoun, Langer GbR瑞基 张

In-app purchases

8 purchases

Percentage Value Calculator

One-time8
  • +30 User Tokens$0.29
  • +1 Convenience Token / 6h, max. +2$0.59
  • +2 Convenience Tokens / 6h, max. +4$0.99
Show 5 more
  • +150 User Tokens$0.99
  • +300 User Tokens$1.49
  • +4 Convenience Tokens / 6h, max. +8$1.59
  • Remove Ads$1.99
  • Lifetime Access$1.99
4 purchases

knowra

Subscriptions4
  • Pro Monthly1 Month trial$9.991 Month
  • Pro Monthly$9.991 Month
  • Pro Yearly$99.001 Year
Show 1 more
  • Pro Yearly$99.991 Year

Questions

Is Percentage Value Calculator free?
Percentage Value Calculator is free to download, with in-app purchases available.
Is knowra free?
knowra is free to download, with in-app purchases available.
Do Percentage Value Calculator or knowra have ads?
Neither Percentage Value Calculator nor knowra shows ads.
Which is updated more often, Percentage Value Calculator or knowra?
Percentage Value Calculator ships an update every 3 weeks, and knowra every 7 months. Most recently, Percentage Value Calculator was updated on October 24, 2026 and knowra on October 11, 2026.

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