Comparison

RST 599TK Pro vs LemurKey

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RST 599TK Pro

Read full description

This app is a real CW QSO simulator for Amateur Radio.  "599BK & AADX Contest type QSO" is supported.  Input of Morse Codes are by using Electric Touch Keyer or Straight Key.  Changing of TX/RX is by SEND button. Supported Min-in CW Decoder too. 【Characteristic】 1. "599BK" and "Contest" style support. 2.Support the CW Speed Control, Reverse of Dot/Dash pad, and Straight Key. 3.Realistic signal meter according to the audio signal level. 4.Status display showing TX / RX operation. 5.Support the space insertion operation both automatic and manual. 6.Support the Min-in CW Decoder function. 7.Support the shortcut-key of CQ and TU. CQ Button function can be set by setting menu. 8.Support the repeat-call function. It works only when the TU button is pressed at the end of the QSO. 9.Support the RIT function. 10. Support input function by key button. 【How to use】 1.The case of CQ Calling Press SEND button Input "CQ CQ DX DE (YOUR CALLSIGN) PSE K" by Touch Keyer or Straight Key. Press SEND button again 2.The case of CQ Answering Press SEND button Input "QRZ DX" by Touch Keyer or Straight Key. Press SEND button again --- Examples of QSO --- [CQ Calling] "CQ CQ DX DE xxnxx xxnxx PSE K" >>> xxnxx DE **n** K "**n** DE xxnxx UR RST 559 BK" >>> R MY RPT 559 UR RST 599 BK "QSL TU" >>> R 73 TU "E E" >>> E E [CQ Ansewing] "QRZ DX" >>> "CQ CQ DE **n** **n** PSE K" "**n** DE xxnxx K" >>> "xxnxx DE **n** UR RST 579 BK" "R **n** DE xxnxx UR RST 599 TU" >>> "R TU" "E E" >>> E E --- DETEC WORDS --- [CQ Calling] CQ CQ DX CQ NA CQ JA [CQ Ansewing] QRZ QRZ DX QRZ NA QRZ JA [BOTH] DE K BK UR RST 73 TU E E etc... 【Example usage video】 - Touch Keyer - https://www.youtube.com/watch?v=4CqcH7-4iiE - Straight Key - https://www.youtube.com/watch?v=CuSEaJtD3KQ - Microphone IN Mode - https://www.youtube.com/watch?v=goN9hVDEGnM

About

LemurKey

This app provides Morse code receiving practice for callsigns, sentences, and two-way contacts. It features adjustable settings, a Koch-style learning mode, and simulated interference for realistic training. Compete with friends on leaderboards and track your progress.

Highlights
  • Morse receiving practice
  • Adjustable WPM and spacing
  • Scripted two-way QSO mode
  • Live DX band conditions
  • Koch-style learning mode
  • Simulated interference options
Features
Read full description

LemurKey is Morse receiving practice built to practice real copy skills — callsigns, sentences, and two-way QSOs. Compete your friends with Strava-style leaderboards and go for the crown! COPY PRACTICE • Word, Callsign, and Sentence modes with slot-based copy • Adjustable WPM, character spacing, tone, and volume • Stars & Watts for clean copies; scrubber unlocks after you listen QSO MODE • Scripted two-way contacts: copy each transmission, then reply • Live accuracy feedback through the exchange LIVE DX • Band conditions and spots tailored to your grid square • Optional location for home grid (when-in-use only) TRAIN • Koch-style Learn mode to build speed character by character • Learn to send Q codes; practice sending by recall • Keys mode to hear any letter at your session settings CHAOS MODE • Optional QRM, QRN, and QSB while copying • Higher watt multipliers when the band gets noisy ACCOUNT (OPTIONAL) • Sign in to sync progress, compete on leaderboards, and back up stats • Delete your account anytime from Account Works offline for practice once installed. Audio runs locally on your device. Privacy policy: https://lemurkey.app/privacy.html Support: support@lemurkey.app

Screenshots

RST 599TK Pro4 screens
LemurKey4 screens

Verdict

The call

The clearest difference is price: LemurKey at Free against RST 599TK Pro's $2.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

LemurKey is free to download; RST 599TK Pro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 9 level
RST 599TK Pro versus LemurKey: the parameters behind the verdict, then further details
ParameterRST 599TK ProLemurKey
Price$2.99Free — better
Rating—5.0 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.015.0
Further details — not scored
Size32 MB8 MB
Age rating4+4+
Developerkoji kamogawaSteve Metcalf

In-app purchases

None

RST 599TK Pro

No in-app purchases

None

LemurKey

No in-app purchases

Questions

Is RST 599TK Pro free?
RST 599TK Pro costs $2.99, with no in-app purchases.
Is LemurKey free?
LemurKey is free to download, with no in-app purchases.
Do RST 599TK Pro or LemurKey have ads?
Neither RST 599TK Pro nor LemurKey shows ads.

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