# Spam Killer vs Authenticator

The clearest difference is ads: Spam Killer at none against Authenticator's shown. Spam Killer also leads on update cadence (every 2 days vs weekly). Authenticator's advantage is iOS requirement (14.0 vs 16.6). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. Spam Killer sells 5 in-app purchases, starting at $3.99 per 7 days and Authenticator sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.4 for Spam Killer against 4.5 for Authenticator. Both are backed by a comparable volume of ratings — 16 and 26 respectively.

Spam Killer ships an update every 2 days, Authenticator weekly. Both last shipped on October 24, 2026.

## The numbers

| Metric | Spam Killer | Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (16 ratings)](https://appshunter.io/ios/app/spam-killer-scam-text-blocker/id6745466973/reviews) | **[4.5 (26 ratings)](https://appshunter.io/ios/app/authenticator-secure-2fa-auth/id6749149708/reviews)** |
| Number of ratings | 16 | **26** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 19 MB | 73 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Jalm Studio Inc](https://appshunter.io/developer/1882690243) | [Timon Scherzinger](https://appshunter.io/developer/1895022963) |

## What reviewers say

### Spam Killer

[App page](https://appshunter.io/ios/app/spam-killer-scam-text-blocker/id6745466973)

Automatically filters unwanted SMS messages, blocks suspicious numbers, and detects scam texts using AI. Customize filters and whitelist important senders for a clean inbox.

**Highlights:** Blocks 99% of spam texts, Detects scams and phishing links, Customizable filters, AI-based spam detection, Whitelists important senders, Simple setup

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 week | $3.99 | per 7 days |
| One Week Premium Protection | $5.99 | per 7 days |
| 3 months | $14.99 | per 3 months |
| Three Months Premium | $19.99 | per 3 months |
| Year of SpamKiller Pro | $39.99 | per year |


### Authenticator

[App page](https://appshunter.io/ios/app/authenticator-secure-2fa-auth/id6749149708)

Securely manage your two-factor authentication tokens and passwords in one place. This app offers offline code generation and a private in-app browser. Free users can manage existing codes and passwords, while premium subscribers gain unlimited creation and secure browsing.

**Highlights:** Organize 2FA tokens and passwords, Offline code generation, Built-in secure browser, Manage existing codes and passwords (free), Unlimited code/password creation (premium), Face ID access

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Monthly | $17.99 | per month |
| Yearly | $49.99 | per year |


## Frequently asked questions

### Is Spam Killer free?

Spam Killer is free to download, with in-app purchases available.

### Is Authenticator free?

Authenticator is free to download, with in-app purchases available.

### Which has better reviews, Spam Killer or Authenticator?

Authenticator is rated higher. Spam Killer averages 4.4 out of 5 from 16 ratings, while Authenticator averages 4.5 from 26 ratings.

### Do Spam Killer or Authenticator have ads?

Authenticator shows ads; Spam Killer does not.

### Which is updated more often, Spam Killer or Authenticator?

Spam Killer ships an update every 2 days, and Authenticator weekly. Most recently, Spam Killer was updated on October 24, 2026 and Authenticator on October 24, 2026.

---

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