# intelli vs RST Decoder Pro

The clearest difference is update cadence: RST Decoder Pro at monthly against intelli's every 3 months. RST Decoder Pro also leads on price ($1.99 vs $4.99) and review sentiment (50% vs 42%). intelli's advantage is iOS requirement (12.0 vs 17.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

intelli costs $4.99 and RST Decoder Pro $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

intelli ships an update every 3 months, RST Decoder Pro monthly. The most recent releases landed on September 21, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | intelli | RST Decoder Pro |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rst-decoder-pro/id1521025545/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 41.7% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 10 MB | 1 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Takuo Matsumura](https://appshunter.io/developer/1076447675) | [koji kamogawa](https://appshunter.io/developer/1488210713) |

## What reviewers say

### intelli

[App page](https://appshunter.io/ios/app/intelli-morse-morese-analyze/id1093346837)

Learn and analyze Morse code with three integrated tools. Convert text to Morse, manually key in code for string conversion, or use the microphone for automatic sound analysis with a high-precision algorithm.

**Highlights:** Manual Morse keyer, Automatic Morse code generator, Sound analysis via microphone, Optical Morse code (LED), High-precision analysis algorithm, FFT-based analysis

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

**In-app purchases:** none


### RST Decoder Pro

[App page](https://appshunter.io/ios/app/rst-decoder-pro/id1521025545)

This application decodes Morse code from your device's microphone, offering two decoding methods (BPF and FFT) with adjustable parameters. It includes features like automatic frequency detection, gain control, and real-time signal display for accurate Morse code practice and reception.

**Highlights:** Microphone Morse code decoding, BPF and FFT decoding methods, Auto Frequency Detector (AFD), Auto Gain Control (AGC), Real-time CW signal display, Waterfall display (Pro version), Adjustable control parameters

**In-app purchases:** none


## Frequently asked questions

### Is intelli free?

intelli costs $4.99, with no in-app purchases.

### Is RST Decoder Pro free?

RST Decoder Pro costs $1.99, with no in-app purchases.

### Do intelli or RST Decoder Pro have ads?

Neither intelli nor RST Decoder Pro shows ads.

### Which is updated more often, intelli or RST Decoder Pro?

intelli ships an update every 3 months, and RST Decoder Pro monthly. Most recently, intelli was updated on September 21, 2026 and RST Decoder Pro on September 20, 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.*