CALC Smart Calculator ± vs Message Keyword Filter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CALC Smart Calculator ±
This app offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.
- Real-time results
- Unit and currency conversions
- Custom functions and constants
- Shareable calculation history
- Landscape mode with tape-roll
- Gratuity calculator
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Why Choose CALC Smart? ► Used by Scientists, Professionals and Students alike ► Apple-Featured: Spotlighted in Utilities and Calculate & Convert. ► User-Loved: Over 10k+ global reviews and 200M+ sessions validate its utility. ► Educator-Certified: Praised by teachers on the Educational App Store for its intuitive UI. Ready for the Latest OS * Multitask on your iPad and use 3D Touch shortcuts. * Search your calculation history with Spotlight. * Widget with history integration. * Apple Watch support, complete with haptic feedback and complications. Top 10 Unique Features ① Real-time results, even with incomplete parentheses. ② Landscape mode for shareable history and tape-roll. ③ Optimized custom keyboard & widget to save space and time. ④ Fast unit and currency conversions—a swipe away. ⑤ Quick gratuity calculator with rounding options. ⑥ Display decimals as fractions with 1/999 precision. ⑦ Create unlimited custom functions and constants. ⑧ Easy expression sharing via link. ⑨ Built-in timer. ⑩ Limitless themes and layouts. Why Users Love CALC * Live Math: Natural input, even for complex calculations. * Swipe Functions: Over 60 advanced math functions just a swipe away. * History: Never lose track of your calculations. * Conversion: 21 categories, plus custom options. Additional Features * Edit on the Fly: Long-press to modify expressions and numbers. * Audio Feedback: Customize tapping sounds. * Styling: Multiple font choices. * Enterprise-Ready: EMM support with MDM & AppConfig. We Listen * Frequent updates based on your feedback. Got a suggestion? Visit our UserVoice page: https://QApps.UserVoice.com Custom Background Tip * Design your own CALC background with images from NASA’s multimedia library: https://nasa.gov/multimedia Terms & Usage * Using this app means agreeing to the standard Terms of Use. Standard Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Message Keyword Filter
This utility helps manage SMS messages by filtering content based on keywords and senders. It utilizes iOS system extensions for secure, private message classification without data leakage.
- Keyword-based SMS filtering
- Sender-specific filtering
- Automatic message classification
- Secure iOS system extensions
- Privacy protection
- Easy-to-use interface
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Are you looking for a simple and secure tool for classifying and filtering SMS messages? You can add keywords and senders according to your needs, and SMS messages containing specified keywords will be automatically classified and filtered based on your settings. The app uses iOS system extensions to securely identify the content of SMS messages and protect your privacy, with no risk of any data leakage. The app is easy to use, secure, and protects your personal privacy while helping you manage your SMS messages with ease.
Screenshots
Verdict
The clearest difference is review sentiment: CALC Smart Calculator ± at 87% against Message Keyword Filter's 29%. CALC Smart Calculator ± also leads on price (Free vs $0.99) and ratings volume (2.4K vs 1). Message Keyword Filter's advantage is in-app purchases (none vs 4) and rating (5.0 vs 4.8). On 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
CALC Smart Calculator ± is free to download; Message Keyword Filter costs $0.99 up front. CALC Smart Calculator ± sells 4 in-app purchases, starting at $0.99 per 3 months. Message Keyword Filter asks for nothing beyond the download.
Message Keyword Filter holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: CALC Smart Calculator ± has 2.4K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 87% of CALC Smart Calculator ±'s written reviews are positive against 29% of Message Keyword Filter's, so the app with the better star average is not the one people write more warmly about.
CALC Smart Calculator ± ships an update fortnightly, Message Keyword Filter every 2 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.
| Parameter | CALC Smart Calculator ± | Message Keyword Filter |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.8 (2.4K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 87.2% of reviews — better | 28.6% of reviews |
| Number of ratings | 2.4K — better | 1 |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Mac, Apple Watch — better | iPhone |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 16 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | QApps LLC | Planeta Pigra Co., Ltd. |
Customer experience
CALC Smart Calculator ±
Message Keyword Filter
Bugs and requests
CALC Smart Calculator ±
Reported bugs
3 issues- Calculation errors in certain scenarios
- Forced tutorial popup on every launch
- Unreliable widget functionality
Requested features
4 requests- Ability to easily clear calculation history
- Option to customize button layout
- Support for entering hexadecimal numbers
- Integration with other apps and services
Message Keyword Filter
Not enough reviews yet to summarise bugs or requests.
In-app purchases
CALC Smart Calculator ±
- Quarterly Supporter$0.993 Months
- Quarterly Supporter7 Days trial$1.993 Months
- Annual Contributor$2.991 Year
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- Annual Contributor7 Days trial$5.991 Year
Message Keyword Filter
No in-app purchases
Questions
Is CALC Smart Calculator ± free?
Is Message Keyword Filter free?
Which has better reviews, CALC Smart Calculator ± or Message Keyword Filter?
Do CALC Smart Calculator ± or Message Keyword Filter have ads?
Which is updated more often, CALC Smart Calculator ± or Message Keyword Filter?
Other comparisons
