Comparison

Subverter vs Call Shield

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

Head to head
About

Subverter

Easily convert subtitle files between various formats like SRT, VTT, and ASS. This app prioritizes user privacy with local, offline processing and offers a clean, ad-free experience for video editors and content creators.

Highlights
  • Wide format support (SRT, VTT, SSA/ASS, SUB, SBV)
  • Offline conversion
  • Ad-free experience
  • User-friendly interface
  • Local processing for privacy
Features
Read full description

Transform your subtitles quickly and effortlessly with Subverter, the go-to app for all your subtitle conversion needs. Whether you’re a video editor, content creator, or hobbyist, Subverter makes subtitle conversion a breeze. Key features: - Wide format support: seamlessly convert between SRT, VTT, SSA/ASS, SUB, and SBV formats, ensuring compatibility with all platforms. - Offline conversion: your privacy is our priority—everything happens locally on your device. - No ads, no distractions: focus on your work with a clean, ad-free experience. - User-friendly interface: import, choose your formats, and convert in just a few taps. Subverter combines power and simplicity to help you save time and stay productive. Start converting your subtitles today and elevate your video projects!

About

Call Shield

Take control of your incoming calls with this app. It blocks unwanted callers, including robocallers and telemarketers, using a secure, local blocklist that operates entirely on your device. Enjoy privacy protection with offline functionality and no required login.

Highlights
  • Block unwanted calls
  • Block number ranges (prefixes)
  • Offline functionality
  • No login required
  • Local device blocklist
  • Supports millions of blocked numbers
Read full description

Call Shield: Block Unwanted Calls and Safeguard Your Privacy Take control of incoming calls with Call Shield — a powerful utility that blocks robocallers, telemarketers, and unwanted numbers using custom blocklists that operate entirely on your device. Please Note: Call Shield is a custom rule and list manager. It does NOT include a pre-packaged spam database or built-in caller directory. You create, import, and manage your own custom blocklists and number ranges. Key Features: - Block & Identify Unwanted Calls: Add specific numbers or entire number ranges (prefixes) to block or identify callers. Supports up to 200 million numbers across multiple extensions. - 100% Offline & Private: Fully offline operation. No login required, and no data is transmitted — your privacy stays completely protected. - Flexible Custom Lists: Easily create, import, and manage your own custom blocklists and identification ranges. Important Notes: - No Pre-packaged Database: Call Shield does not provide a pre-installed spam database; you need to add your own numbers, prefixes, or lists. - Voicemail Handling: Blocked calls may still be forwarded to voicemail, depending on your mobile carrier’s policies. - Do Not Disturb Mode: If Do Not Disturb mode is active, blocked calls may still appear silently on your Home screen or in Recents. - Extension Setup: If Call Shield extensions don't appear immediately after updating rules, open Settings > Phone > Call Blocking & Identification to verify they are enabled. Privacy Policy: Call Shield does not collect, store, or transmit any personal data or call history. All blocking is handled locally on your device.

Screenshots

Subverter2 screens
Call Shield4 screens

Verdict

The call

The clearest difference is rating: Subverter at 5.0 against Call Shield's 1.0. Call Shield's advantage is update cadence (fortnightly vs every 3 months). 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

CostPrice · In-app purchases · Ads · Monetization

Subverter costs $1.99 and Call Shield $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Subverter holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Subverter ships an update every 3 months, Call Shield fortnightly. The most recent releases landed on October 12, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
Subverter versus Call Shield: the parameters behind the verdict, then further details
ParameterSubverterCall Shield
Price$1.99$1.99
Rating5.0 (1 ratings) — better1.0 (1 ratings)
Positive reviews—0.0% of reviews
Number of ratings11
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size1 MB35 MB
Age rating4+4+
DeveloperMarco Tini磊 汪

Customer experience

Subverter

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Call Shield

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Subverter

No in-app purchases

None

Call Shield

No in-app purchases

Questions

Is Subverter free?
Subverter costs $1.99, with no in-app purchases.
Is Call Shield free?
Call Shield costs $1.99, with no in-app purchases.
Which has better reviews, Subverter or Call Shield?
Subverter is rated higher. Subverter averages 5.0 out of 5 from 1 ratings, while Call Shield averages 1.0 from 1 ratings.
Do Subverter or Call Shield have ads?
Neither Subverter nor Call Shield shows ads.
Which is updated more often, Subverter or Call Shield?
Subverter ships an update every 3 months, and Call Shield fortnightly. Most recently, Subverter was updated on October 12, 2026 and Call Shield on November 4, 2026.

Other comparisons