Comparison

StreamLink vs Scientific Calculator 991EX

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

Head to head
About

StreamLink

This utility app enhances browsing with features like incognito mode, webpage bookmarking, and automatic redirection. It prioritizes user privacy by not retaining browsing history or cookies. Unlock premium features with various membership plans.

Highlights
  • Incognito browsing
  • Webpage bookmarking
  • Manual categorization
  • Automatic redirection
  • Privacy protection
  • Premium features
Features
Read full description

StreamLink supports webpage bookmarking, manual categorization, incognito browsing, and redirection modes for enhanced convenience. In incognito mode, the browser does not retain browsing history, cookies, or other sensitive data, providing comprehensive protection for your browsing privacy. A unique redirection feature automatically returns you to the homepage when you switch to another page or turn off the screen, allowing you to easily enjoy a highly secure browsing experience. Download StreamLink and embark on a safe and efficient new browsing experience, perfectly blending user-friendly operation with privacy protection for a safer and smoother online journey. Unlock immediate access to our full suite of premium features with our Weekly, Annual, or Lifetime membership plans. To ensure your experience remains seamless and uninterrupted, your subscription is designed to renew automatically. The next payment will be processed through your account within the 24 hours leading up to your current cycle's expiration. Should you wish to pause your journey, simply navigate to your App Store Settings and disable the auto-renewal option at least 24 hours before the period ends; otherwise, your access will continue effortlessly into the next term. Start enjoying the ultimate experience today! Subscribe now and enjoy all premium features! Terms of Service:streamlinkweb.com/terms/ Privacy Policy:https://streamlinkweb.com/privacy/ Contact Email:zhunagaliev@za-stroy-too.com

About

Scientific Calculator 991EX

Features
Read full description

Scientific Calculator 991EX is a natural-display scientific calculator designed for students, engineers, and technical work. Calculate and Complex modes are free. Pro unlocks ten advanced modes: • Statistics • Distribution • Spreadsheet • Table • Equation/Func • Inequality • Base-N • Matrix • Vector • Ratio Calculate with fractions, roots, trigonometry, logarithms, calculus, constants, unit conversions, complex numbers, matrices, vectors, statistics, probability distributions, spreadsheets, function tables, equations, inequalities, and ratios. Choose natural or linear input, convert exact results to decimals, and use calculation history and replay without creating an account. Calculations, settings, history, and the locally generated calculator identifier are stored on your device. The app has no ads, tracking, analytics SDKs, accounts, or backend data collection. Pro is available as a monthly or yearly auto-renewing subscription, or as a one-time Lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; manage them in your Apple Account settings. Restore Purchases is available for devices using the same Apple Account. This independent app is not affiliated with or endorsed by any calculator manufacturer. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://matinformatics.org/privacy/scientific-calculator-fx-991ex

Screenshots

StreamLink4 screens
Scientific Calculator 991EX4 screens

Verdict

The call

The clearest difference is rating: StreamLink at 1.9 against Scientific Calculator 991EX's 1.0. StreamLink also leads on update cadence (weekly vs every 2 months) and ratings volume (18 vs 1). On price, 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

Both are free to download. StreamLink sells 3 in-app purchases, starting at $2.99 per 7 days and Scientific Calculator 991EX sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

StreamLink holds the better App Store score, 1.9 against 1.0. That said, the two scores are not equally well evidenced: StreamLink has 18 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

StreamLink ships an update weekly, Scientific Calculator 991EX every 2 months. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

Scorecard4 real differences · 6 level
StreamLink versus Scientific Calculator 991EX: the parameters behind the verdict, then further details
ParameterStreamLinkScientific Calculator 991EX
PriceFreeFree
Rating1.9 (18 ratings) — better1.0 (1 ratings)
Positive reviews0.0% of reviews—
Number of ratings18 — better1
Update frequencyWeekly — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationSubscription—
DevicesiPhone, iPodiPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size109 MB9 MB
Age rating17+4+
DeveloperZA-STROY, TOO - 46L32B2XRLMurad Yaghi

In-app purchases

3 purchases

StreamLink

Subscriptions2
  • week$2.997 Days
  • year$19.991 Year
One-time1
  • lifetime$29.99
3 purchases

Scientific Calculator 991EX

Subscriptions2
  • Monthly Pro$0.991 Month
  • Yearly Pro$4.991 Year
One-time1
  • Lifetime Pro$14.99

Questions

Is StreamLink free?
StreamLink is free to download, with in-app purchases available.
Is Scientific Calculator 991EX free?
Scientific Calculator 991EX is free to download, with in-app purchases available.
Which has better reviews, StreamLink or Scientific Calculator 991EX?
StreamLink is rated higher. StreamLink averages 1.9 out of 5 from 18 ratings, while Scientific Calculator 991EX averages 1.0 from 1 ratings.
Do StreamLink or Scientific Calculator 991EX have ads?
Neither StreamLink nor Scientific Calculator 991EX shows ads.
Which is updated more often, StreamLink or Scientific Calculator 991EX?
StreamLink ships an update weekly, and Scientific Calculator 991EX every 2 months. Most recently, StreamLink was updated on November 9, 2026 and Scientific Calculator 991EX on November 10, 2026.

Other comparisons