Comparison

next.calc vs Smart Spam Filter

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

Head to head
About

next.calc

A beautifully designed calculator app that offers a modern and intuitive user experience. It features personalization options, live activities, and widgets for quick access, along with advanced editing capabilities for complex expressions.

Highlights
  • Free with no ads or tracking
  • Customizable themes
  • Live Activities and Lock Screen Widgets
  • One-handed keyboard
  • Infix calculations with syntax highlighting
  • Infinite history and favorite expressions
  • Cursor gestures and trackpad support
Features
Read full description

next.calc is a beautiful and intuitive calculator, reimagined for the modern era, with many useful features: Completely Free - No cost, no ads, no tracking! Themes - Personalize to match your style Live Activities - Quickly jump back into an unfinished expression Lock Screen Widgets - Quickly access from the lock screen One-Handed Keyboard - Effortlessly use on larger phones and tablets A Cursor - Allows for easy typing and editing, just like typing in Messages or Notes Infix Calculations - See the full expression, in context, as you type Multi-Lined Expressions - Making long expressions a pleasure to edit Syntax Highlighting - Makes expressions easier to digest Real-Time Answers - See the answer as you type Infinite History - Easily jump back to a previous expression or answer Favorite Expressions with Notes - Great for storing budgets, calculating tips, formulas, etc. Intuitive Cursor Gestures - Swipe left and right on the keyboard to quickly move the cursor Intuitive Keyboard Gestures - Swipe down (or long press) on keys with secondary values Keyboard and Trackpad Support - Works great with the Magic Keyboard iPad Support & Multitasking - Supports Split View and Slide Over Copy, Cut, and Paste - Double tap on numbers to quickly select and edit them Beautiful Handmade Animations and Icons - Makes the app a delight and a pleasure to use And more!

About

Smart Spam Filter

This AI-powered application automatically filters unwanted spam and smishing messages. It utilizes advanced AI models, both online and on-device, to detect and block new types of fraudulent texts in real-time. Additional features include custom blacklisting and whitelisting for enhanced control.

Highlights
  • AI-based spam/smishing filtering
  • Online real-time AI detection
  • On-device AI learning
  • Keyword and number blocking
  • Whitelist functionality
Features
Read full description

Smart AI spam blocker app created by Korean AI researcher Stock adverts, Toto rooms, bank fraud texts, expert reading rooms...  We have created a smart AI-based spam/smishing filtering app for those who are tired of countless spam texts and spam coming from new numbers even if you block them! Smart SMS spam/smishing auto filter app using the latest AI! AI mode without keyword registration! - Online AI: The smartest filtering to catch new types of spam and smishing in real-time. - On-device AI: Filtering done by AI on your phone that gets smarter every week. And more... - Blacklist word- and number-based blocking - Whitelist word and number-based filters Free yourself from spam!

Screenshots

next.calc4 screens
Smart Spam Filter4 screens

Verdict

The call

The clearest difference is rating: next.calc at 5.0 against Smart Spam Filter's 4.4. next.calc also leads on monetization model (free vs free with in-app purchases) and ratings volume (40 vs 9). On price, review sentiment, update cadence and ads 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. next.calc sells 3 one-off in-app purchases and Smart Spam Filter sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

next.calc holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 40 and 9 respectively. Written reviews point the same way: 100% of next.calc's written reviews are positive against 98% of Smart Spam Filter's.

UpkeepUpdate frequency

next.calc ships an update every 5 weeks, Smart Spam Filter monthly. The most recent releases landed on November 3, 2026 and November 12, 2026 respectively.

Scorecard3 real differences · 7 level
next.calc versus Smart Spam Filter: the parameters behind the verdict, then further details
Parameternext.calcSmart Spam Filter
PriceFreeFree
Rating5.0 (40 ratings) — better4.4 (9 ratings)
Positive reviews100.0% of reviews — better98.1% of reviews
Number of ratings40 — better9
Update frequencyEvery 5 weeksMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size5 MB22 MB
Age rating4+12+
DeveloperJosh AngelsbergJunbum Lee

Customer experience

next.calc

All ratings39 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Smart Spam Filter

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews54 reviews
Positive98.1%
Neutral1.9%
Negative0.0%

In-app purchases

3 purchases

next.calc

One-time3
  • Buy me a slice of pizza$2.99
  • Buy me a coffee$4.99
  • Buy me a burrito$9.99
2 purchases

Smart Spam Filter

Subscriptions2
  • Buy a cup of coffee per month$2.991 Month
  • Support a chicken per year$29.991 Year

Questions

Is next.calc free?
next.calc is free to download, with in-app purchases available.
Is Smart Spam Filter free?
Smart Spam Filter is free to download, with in-app purchases available.
Which has better reviews, next.calc or Smart Spam Filter?
next.calc is rated higher. next.calc averages 5.0 out of 5 from 40 ratings, while Smart Spam Filter averages 4.4 from 9 ratings.
Do next.calc or Smart Spam Filter have ads?
Neither next.calc nor Smart Spam Filter shows ads.
Which is updated more often, next.calc or Smart Spam Filter?
next.calc ships an update every 5 weeks, and Smart Spam Filter monthly. Most recently, next.calc was updated on November 3, 2026 and Smart Spam Filter on November 12, 2026.

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