Comparison

SPIN Safe Browser vs CalcSpace

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

Head to head
About

SPIN Safe Browser

This app provides a secure browsing experience by automatically blocking adult content, pornography, and harmful websites. It offers enhanced safety features and ensures safe search results on popular engines.

Highlights
  • Automatic content blocking
  • Safe search enforcement
  • YouTube Restricted Mode
  • Passcode protection
  • Domain blocking/allowing
  • Ad-free experience (with subscription)
Features
Read full description

SPIN Safe Browser: Protect Yourself from Inappropriate Content Stay Safe Online with SPIN Safe Browser SPIN Safe Browser is your trusted companion for secure browsing on iOS devices. Automatically blocking nudity, pornography, and harmful content, SPIN ensures a safer online experience for you and your family. Are you a School or Business? Consider the enterprise version of our SPIN Safe Browser with full mobile device management integration - available via Apple School Manager and Apple Business Manager. Upgrade to SPIN+ for Enhanced Safety Unlock advanced features with SPIN+: ◆ Allow or block specific domains ◆ Set a passcode for added security ◆ Save and restore domains and bookmarks with iCloud integration ◆ Enjoy an ad-free experience (ads are shown without an active subscription) Why Choose SPIN Safe Browser? ◆ Comprehensive Protection: Blocks nudity, pornography, and harmful content ◆ Secure Browsing: Ensures a safe browsing experience for you and your family ◆ #1 iOS Internet Filter: Trusted by users for filtering inappropriate content and enforcing safe search on Google, Bing, Ecosia, and DuckDuckGo Key Features of SPIN Safe Browser ◆ Automatic Content Blocking: Blocks pornography, adult content, nudity, unsafe search engines, file-sharing sites, VPNs, and proxies ◆ YouTube Safety: Enforces Restricted Mode for safer YouTube viewing ◆ Zero Configuration Needed: Safeguards are pre-enabled and enforced ◆ Fast and Reliable: Built on Mozilla open-source browser technology for speed and reliability ◆ Universal Compatibility: Works on any WiFi or cellular connection Automatic Blocking of Harmful Content ◆ Pornography and Adult Content ◆ Nudity ◆ Unsafe Search Engines ◆ File Sharing/Peer-to-Peer Sites ◆ VPN and Proxy Sites Download SPIN Safe Browser Today Protect yourself and your loved ones with SPIN Safe Browser. Enjoy peace of mind while browsing, knowing that SPIN is actively blocking explicit content and ensuring safe searches on Bing, Google, Ecosia, and DuckDuckGo. License Agreement Apple’s Standard License Agreement - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy - https://spinsafebrowser.com/spinprivacypolicy/ Terms of Use - https://spinsafebrowser.com/?page_id=89

About

CalcSpace

Perform multiple calculations simultaneously on a single screen with various calculator types. Organize up to eight workspaces with tabs and save your progress between sessions. Ideal for complex calculations or everyday tasks.

Highlights
  • Multiple calculators on one screen
  • Up to 8 tabs for separate workspaces
  • Variety of calculator types (Math, Money, Converters, Dates, Fun)
  • Save tabs, layouts, and values
  • Works on iPhone and iPad
  • No account required
Features
Read full description

Give every calculation a place - and keep the useful ones connected. CalcSpace turns your iPhone or iPad into a personal workspace for numbers. Compare everyday choices, explore a graph, keep project calculations together, or take a quick math-puzzle break without losing your work. BUILD YOUR OWN WORKSPACE Put 1-4 different calculators on one screen and organize up to 8 saved tabs. Mix a scientific calculator with a graph, compare two shopping options, or keep a converter beside your running total. Search the tool picker, choose Math, Everyday, or Fun, and name tabs for your projects. NEED MORE ROOM? PINCH TO EXPAND Spread two fingers on a calculator to fill the workspace with that panel. Pinch closed to return to the same grid with your calculation intact. Responsive text, larger mathematical symbols, and a tactile keypad make work easier to follow at different panel sizes. LET RESULTS WORK TOGETHER Basic and Scientific show live results as you type. Revisit calculation history, edit expressions with the keyboard, and save useful results as named variables. Reuse those values in Basic, Scientific, Graph, and Calculus; the Variables tool lets you manage them in one place. EXPLORE MORE THAN AN ANSWER Graph explicit, polar, parametric, and implicit relationships, including inequalities. Explore parameters with sliders and animation, inspect points of interest and function tables, and share graph images or table CSVs. Matrix, Statistics, numerical Calculus, and Probability tools make room for deeper questions. 26 TOOLS, ONE PLACE Math: Basic, Scientific, Graph, Matrix, Statistics, Calculus, Variables, and Probability. Everyday: Tip, Running Total, Unit Converter, Currency, Discount, Age & Date, Unit Price, Recipe Scaler, Hourly/Salary, and Cost Per Use. Fun: Dog / Cat Age, Life in Numbers, Life in Weeks, Pizza Value, Birthday Countdown, Decision Picker, How Long Will It Take?, and Lottery Reality Check. MAKE EVERYDAY MATH PERSONAL Compare pizza sizes by value. See how repeated use changes the cost of something you bought. Turn progress toward a goal into an estimated completion date. Explore birthday countdowns and life milestones. Lottery Reality Check explains probabilities; it does not sell tickets, offer prizes, or predict winning numbers. Optional, clearly marked Chaos Mode adds playful variation only to Fun calculators and is off by default. A LITTLE SOMETHING FOR YOUR BRAIN Visit Play for a daily math challenge with hints and an explained solution. In Make the Number, use all four number tiles exactly once to reach a target. Discover 25 local achievements as you explore, and return to your saved workspace when you are ready. MAKE IT YOURS Choose color skins, system/light/dark appearance, high contrast, and reduced motion. VoiceOver labels and accessible alternatives support navigation. The built-in four-step tutorial introduces the essentials and can be replayed in Settings > App walkthrough. No account is required. Workspaces and progress save on your device. Currency rates use an internet connection with cached/bundled fallback rates. The free app includes banner advertising. An optional annual auto-renewing subscription removes ads; current local pricing, Restore Purchases, and Manage Subscription are in Settings. All calculators and Play features are available without a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SPIN Safe Browser4 screens
CalcSpace4 screens

Verdict

The call

The clearest difference is rating: CalcSpace at 5.0 against SPIN Safe Browser's 4.4. CalcSpace also leads on in-app purchases (none vs 2) and iOS requirement (13.0 vs 15.0). SPIN Safe Browser's advantage is ads (none vs shown) and ratings volume (2.7K vs 2). On price, update cadence, monetization model 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. SPIN Safe Browser sells 2 in-app purchases, starting at $1.99 per month. CalcSpace asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CalcSpace holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: SPIN Safe Browser has 2.7K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

SPIN Safe Browser ships an update every 6 weeks, CalcSpace every 5 weeks. Both last shipped on October 14, 2026.

Scorecard5 real differences · 5 level
SPIN Safe Browser versus CalcSpace: the parameters behind the verdict, then further details
ParameterSPIN Safe BrowserCalcSpace
PriceFreeFree
Rating4.4 (2.7K ratings)5.0 (2 ratings) — better
Positive reviews53.0% of reviews—
Number of ratings2.7K — better2
Update frequencyEvery 6 weeksEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size267 MB26 MB
Age rating4+4+
DeveloperNational Education Technologies Inc.Austin Ciminillo

Customer experience

SPIN Safe Browser

All ratings2,652 ratings
Positive86.0%
Neutral4.1%
Negative9.9%
Written reviews253 reviews
Positive53.0%
Neutral13.0%
Negative34.0%

CalcSpace

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

SPIN Safe Browser

Reported bugs

4 issues
  • Can't delete the app
  • YouTube videos not blocked
  • Bypass filters using Google search
  • Crashes when opening tabs

Requested features

4 requests
  • Add dark mode option
  • Allow customization of blocked sites
  • Improve tab management
  • Better integration with iOS features

CalcSpace

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

SPIN Safe Browser

Subscriptions2
  • SPIN+ Monthly Subscription$1.991 Month
  • SPIN+ Yearly Subscription$19.991 Year
None

CalcSpace

No in-app purchases

Questions

Is SPIN Safe Browser free?
SPIN Safe Browser is free to download, with in-app purchases available.
Is CalcSpace free?
CalcSpace is free to download, with no in-app purchases.
Which has better reviews, SPIN Safe Browser or CalcSpace?
CalcSpace is rated higher. SPIN Safe Browser averages 4.4 out of 5 from 2.7K ratings, while CalcSpace averages 5.0 from 2 ratings.
Do SPIN Safe Browser or CalcSpace have ads?
CalcSpace shows ads; SPIN Safe Browser does not.
Which is updated more often, SPIN Safe Browser or CalcSpace?
SPIN Safe Browser ships an update every 6 weeks, and CalcSpace every 5 weeks. Most recently, SPIN Safe Browser was updated on October 14, 2026 and CalcSpace on October 14, 2026.

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