# Subverter vs Call Shield

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.

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

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.

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

## The numbers

| Metric | Subverter | Call Shield |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/subverter/id6741046402/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/call-shield-spam-call-blocker/id6744029271/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Paid | Paid |
| Size | 1 MB | 35 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Marco Tini](https://appshunter.io/developer/544232459) | [磊 汪](https://appshunter.io/developer/1063627762) |

## What reviewers say

### Subverter

[App page](https://appshunter.io/ios/app/subverter/id6741046402)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Call Shield

[App page](https://appshunter.io/ios/app/call-shield-spam-call-blocker/id6744029271)

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

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*