# PulseQSO vs Key

The clearest difference is review sentiment: PulseQSO at 50% against Key's 0%. PulseQSO also leads on price (Free vs $0.99) and rating (4.0 vs 1.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

PulseQSO is free to download; Key costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PulseQSO holds the better App Store score, 4.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 50% of PulseQSO's written reviews are positive against 0% of Key's.

## The numbers

| Metric | PulseQSO | Key |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/pulseqso/id1629134275/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/key-tone-decoder/id6738107351/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 39 months | — |
| Monetization | **Free** | Paid |
| Size | 7 MB | 1 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Pulsely Consulting](https://appshunter.io/developer/475349326) | [NANO ELECTRONICS RESEARCH MUHENDISLIK ARASTIRMA GELISTIRME LIMITED SIRKETI](https://appshunter.io/developer/1674573382) |

## What reviewers say

### PulseQSO

[App page](https://appshunter.io/ios/app/pulseqso/id1629134275)

This application serves as a digital logbook for amateur radio enthusiasts. It allows users to record QSO correspondences and contact details, with data securely stored and synced across multiple Apple devices via iCloud.

**Highlights:** Amateur radio QSO logging, Contact information storage, iCloud data synchronization, Cross-device compatibility (Mac, iOS, iPadOS), Secure, device-only data storage

**In-app purchases:** none


### Key

[App page](https://appshunter.io/ios/app/key-tone-decoder/id6738107351)

This application uses your device's microphone to capture and decode dual-tone multi-frequency (DTMF) signals in real-time. It displays the decoded numbers instantly on your screen, making it a useful tool for professionals and tech enthusiasts.

**Highlights:** Real-time DTMF signal decoding, Uses device microphone, Displays decoded numbers instantly, Suitable for professionals, Useful for tech enthusiasts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PulseQSO free?

PulseQSO is free to download, with no in-app purchases.

### Is Key free?

Key costs $0.99, with no in-app purchases.

### Which has better reviews, PulseQSO or Key?

PulseQSO is rated higher. PulseQSO averages 4.0 out of 5 from 1 ratings, while Key averages 1.0 from 1 ratings.

### Do PulseQSO or Key have ads?

Neither PulseQSO nor Key shows ads.

---

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