# RST Decoder vs Tikal

The clearest difference is price: RST Decoder at Free against Tikal's $1.99. RST Decoder also leads on ratings volume (7 vs 1). Tikal's advantage is ads (none vs shown) and update cadence (every 4 weeks vs every 2 months). On rating, in-app purchases, device support and iOS requirement there is nothing between them.

RST Decoder is free to download; Tikal costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for RST Decoder against 5.0 for Tikal. That said, the two scores are not equally well evidenced: RST Decoder has 7 ratings behind it against 1, so its average is the more settled of the two.

RST Decoder ships an update every 2 months, Tikal every 4 weeks. The most recent releases landed on October 6, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | RST Decoder | Tikal |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/rst-decoder/id1519587362/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/tikal-25/id6730111959/reviews) |
| Number of ratings | **7** | 1 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | **Ad-supported** | Paid |
| Size | 6 MB | 6 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone | **iPhone, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [koji kamogawa](https://appshunter.io/developer/1488210713) | [PETER KOLLNER](https://appshunter.io/developer/1771244599) |

## What reviewers say

### RST Decoder

[App page](https://appshunter.io/ios/app/rst-decoder/id1519587362)

This application decodes Morse code from your microphone, acting as a practice tool to verify your keying accuracy. It offers advanced features like BPF and FFT decoders with automatic frequency and gain control, allowing for fine-tuning of reception parameters.

**Highlights:** Microphone Morse code decoding, Morse practice and keying check, BPF and FFT decoder options, Auto Frequency Detector (AFD), Auto Gain Control (AGC), Real-time CW signal display, Input signal recording/playback

**In-app purchases:** none


### Tikal

[App page](https://appshunter.io/ios/app/tikal-25/id6730111959)

This scientific calculator app emulates a 1978 Japanese pocket calculator with enhanced precision. It offers advanced functions, a shareable log, and a graph display for statistical mode. Enjoy a clean, ad-free experience with customizable display colors.

**Highlights:** Emulates 1978 Japanese pocket calculator, Arithmetic, trigonometric, logarithmic, statistical functions, High internal precision, Graph display for statistical mode, Shareable calculation log, Customizable display colors (red, green, blue)

**In-app purchases:** none


## Frequently asked questions

### Is RST Decoder free?

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

### Is Tikal free?

Tikal costs $1.99, with no in-app purchases.

### Which has better reviews, RST Decoder or Tikal?

RST Decoder and Tikal are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.

### Do RST Decoder or Tikal have ads?

RST Decoder shows ads; Tikal does not.

### Which is updated more often, RST Decoder or Tikal?

RST Decoder ships an update every 2 months, and Tikal every 4 weeks. Most recently, RST Decoder was updated on October 6, 2026 and Tikal on June 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.*