SMS Filter vs Secure DNS & Firewall
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SMS Filter
Take control of your incoming text messages by filtering out spam, junk, and unwanted SMS/MMS. Create custom rules based on keywords, patterns, or regular expressions to blacklist or whitelist messages. An optional yearly subscription offers advanced spam protection with a spammers database and statistical analysis.
- Customizable filtering rules
- Filter by text patterns, keywords, regexp
- Blacklist/Whitelist messages
- Test rules on sample messages
- Spam Protection subscription
- Spammer database
- Statistical spam analysis
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Stop being distracted with spam, junk or other unwanted text messages, including SMS and MMS. With SMS Filter, you now at last have a control of incoming text messages. Features: - create your own list of rules to filter your incoming text messages - filter incoming text messages by text patterns, keywords, or regexp - blacklist or whitelist messages that match particular rule - test your rules on test message Pro feature: Spam Protection subscription. Stay protected from massive spam attacks, let you messages be checked with our spammer database - for only $2.99 yearly (price varies by country). Spam Protection works following way: - when several users receive the same SMS from same sender during short period of time - that looks like a massive spam mailing. Once we detect that mailing, we treat next messages from that sender as a spam, and sender - as spammer. - once sender is marked as spammer, new messages from this sender to subscribers are filtered. A list of such senders is our spammer database. - once message is marked as spam, we use statistical algorithms to analyze text in it. In case new SMS message is sent from unknown phone number to subscriber, and it is similar to known spam messages, we filter it either. Support: support@deftapps.com Privacy & Terms of Service - We highly respect your privacy. You can find our Privacy Policy here http://deftapps.com/SMSFilter/privacy_policy.html - You can view our Terms of Service here http://deftapps.com/SMSFilter/terms_and_conditions.html Note about Spam Protection subscription: - 14-day trial - Spam Protection is provided to you on a subscription basis for the yearly term. - Payment will be charged to iTunes Account at the end of trial period. - Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.
Secure DNS & Firewall
Encrypts DNS queries for enhanced privacy and security. It blocks ads, trackers, and malicious sites with customizable rules, offering a safer browsing experience. View your DNS query history for insights and control.
- Encrypted DNS over HTTPS (DoH)
- Customizable domain block list
- Predefined blocked categories
- App and service blocking
- DNS query history
- Ad and tracker blocking
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DNS Firewall encrypts all DNS queries across all networks to ensure secure DNS queries and protect your privacy. With customized rules, it also helps protect against certain phishing and malware attacks, blocks ads and trackers, and provides a safer and cleaner network environment. ## Features ### Security DNS Firewall offers a DNS over HTTPS (DoH) service to immediately protect your DNS privacy and safeguard against DNS manipulation, a cyber attack that can block access to news sites, social media platforms, and messaging apps. ### Customizable Firewall You can add domains to the block list, including subdomains, and customize it to fit your needs. ### Predefined Blocked Categories We maintain and update predefined blocked categories, such as known malicious and phishing domains, several times a day to keep the block list data up-to-date. ### App/Service Blocking You have the option to block selected apps and services. ### Your DNS query history - Offers clear insights into your network queries. You can block or allow domains with a single tap. - Displays the domains you're visiting, the blocked domains, and the reason for the block (e.g., ad, malicious). - Shows the most recent DNS queries on your device via a timeline. - DNS query history is private and can only be accessed by you. - Can be turned off, in which case the server won't save any query data. # Privacy We are fully committed to data security and privacy. DNS Firewall is in return protecting your own privacy. Your data is fully under your control. - We don’t track your usage of DNS Firewall. There are no cookies, advertisements and analytics. - DNS Firewall is designed to be used anonymously. We do not ask for any email, phone or personal information to use our app. - We do not (and will never) sell or share any of the data submitted directly or indirectly by our users with any person or entity. # Subscription - Subscription is needed to use our service. - 14-day free trial requires activation of subscription $1.49/month or $12.99/year. - Payment will be charged to Apple account at confirmation of purchase. - Cancel in your Apple account before end of trial to avoid payment. After trial, your subscription will start and renew automatically monthly, unless cancelled. - 14-day trial is valid for one subscription only.
Screenshots
Verdict
The clearest difference is review sentiment: Secure DNS & Firewall at 70% against SMS Filter's 27%. Secure DNS & Firewall also leads on update cadence (every 6 weeks vs every 8 months) and rating (4.0 vs 3.7). SMS Filter's advantage is iOS requirement (11.0 vs 17.0). On price, ratings volume, 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
Both are free to download. SMS Filter sells 1 in-app purchase, starting at $2.99 per year and Secure DNS & Firewall sells 2 in-app purchases, starting at $1.49 per month. Whichever you choose, the download price is not the number that matters.
Secure DNS & Firewall holds the better App Store score, 4.0 against 3.7. Both are backed by a comparable volume of ratings — 14 and 22 respectively. Written reviews point the same way: 27% of SMS Filter's written reviews are positive against 70% of Secure DNS & Firewall's.
SMS Filter ships an update every 8 months, Secure DNS & Firewall every 6 weeks. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.
| Parameter | SMS Filter | Secure DNS & Firewall |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (14 ratings) | 4.0 (22 ratings) — better |
| Positive reviews | 26.7% of reviews | 70.0% of reviews — better |
| Number of ratings | 14 | 22 — better |
| Update frequency | Every 8 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 58 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Iurii Mozharovskyi | Flinteger LLC |
Customer experience
SMS Filter
Secure DNS & Firewall
In-app purchases
SMS Filter
- Spam Protection14 Days trial$2.991 Year
Secure DNS & Firewall
- DNSS Monthly Subscription3 Days trial$1.491 Month
- DNSS Yearly Subscription14 Days trial$12.991 Year
Questions
Is SMS Filter free?
Is Secure DNS & Firewall free?
Which has better reviews, SMS Filter or Secure DNS & Firewall?
Do SMS Filter or Secure DNS & Firewall have ads?
Which is updated more often, SMS Filter or Secure DNS & Firewall?
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