# DTMF Decoder vs 2FA

The clearest difference is price: 2FA at Free against DTMF Decoder's $0.99. 2FA also leads on update cadence (weekly vs every 19 months). DTMF Decoder's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support there is nothing between them.

2FA is free to download; DTMF Decoder costs $0.99 up front. 2FA sells 2 in-app purchases, starting at $3.99 per 7 days. DTMF Decoder asks for nothing beyond the download.

DTMF Decoder ships an update every 19 months, 2FA weekly. The most recent releases landed on September 23, 2026 and May 19, 2026 respectively.

## The numbers

| Metric | DTMF Decoder | 2FA |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[2.5 (17 ratings)](https://appshunter.io/ios/app/dtmf-decoder/id306195275/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 40.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | **Weekly** |
| Monetization | Free | — |
| Size | 5 MB | 12 MB |
| Requires iOS | **11.0** | 16 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [dreadtech.com](https://appshunter.io/developer/306195278) | [SASU DYDY](https://appshunter.io/developer/1810084415) |

## What reviewers say

### DTMF Decoder

[App page](https://appshunter.io/ios/app/dtmf-decoder/id306195275)

This utility transforms your iPhone into a DTMF tone decoder. It listens to DTMF tones through the microphone and displays the dialed numbers. Decoded digits can be easily copied to the clipboard for further use.

**Highlights:** DTMF tone decoding, Microphone input, Displays dialed numbers, Copy to clipboard, Source code available

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

**In-app purchases:** none


### 2FA

[App page](https://appshunter.io/ios/app/2fa-protect-your-data/id6744162059)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $3.99 | per 7 days |
| Monthly Premium | $9.99 | per month |


## Frequently asked questions

### Is DTMF Decoder free?

DTMF Decoder costs $0.99, with no in-app purchases.

### Is 2FA free?

2FA is free to download, with in-app purchases available.

### Do DTMF Decoder or 2FA have ads?

2FA shows ads; DTMF Decoder does not.

### Which is updated more often, DTMF Decoder or 2FA?

DTMF Decoder ships an update every 19 months, and 2FA weekly. Most recently, DTMF Decoder was updated on September 23, 2026 and 2FA on May 19, 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.*