Rekoe vs SEIMON
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Rekoe
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Rekoe is a training app for voice mimicry, allowing you to imitate, record, compare, and practice with your favorite audio. Perfect for voice actors, narrators, comedians, actors, reciters, English shadowing, and anyone who expresses themselves through voice. ## Main Features - Import audio files Easily add reference audio you want to practice with - Visual comparison using waveform display Compare your voice and the reference audio side-by-side to instantly spot timing and intensity differences - Overlapping and alternating playback Play both audios "simultaneously" or "alternately" to compare differences - Fine adjustment of recording start position Manually adjust the start point of your recording to enable more accurate comparison - Offline support All data is stored locally, so no internet connection is required ## Recommended for - Those aiming to become voice actors or narrators - Those who want to accurately recreate lines and dialogue - Those who find it difficult to notice pronunciation and intonation differences by ear alone - Those practicing shadowing in English or other languages - Those who want to listen to and improve their own voice objectively - Those who want to improve their presentation skills - Those who want to get better at karaoke ## How to use 1. Tap "+ Import" on the home screen to add an audio file 2. Tap the imported file to open the recording screen 3. Tap the mic button to start recording (the reference audio will play at the same time) 4. Tap the stop button to finish recording 5. Tap the play button to review your recording ## What is Rekoe? "Rekoe" is a coined word from "Record" and "Koe" (meaning "voice" in Japanese). Mimic it, record it, listen, and improve. Repeating this process will enhance your expressive voice. Start your voice training now.
SEIMON
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This voiceprint analysis app (SEIMON) compares two audio recordings to determine if they belong to the same speaker. Enjoy an experience like a real voiceprint analyst with its terminal-style interface. ------------------------------------------------------------ Main Features ------------------------------------------------------------ [Audio Data Collection] Records audio using the microphone and saves it to the evidence vault. Recorded audio can be played back and managed at any time. [Voiceprint Analysis] Compares two audio samples and determines if they belong to the same speaker using three algorithms: MFCC, DTW, and GMM. Results are displayed as MATCH / SIMILAR / NO MATCH. [Evidence Vault] Manages recorded audio files in a list. Playback, deletion, and export (Pro) are possible. [Voiceprint Spectrogram (Pro)] Visualization of voiceprints based on MFCC. Visually confirm the speaker's unique voice characteristics. [Fully On-Device Processing] No audio data is transmitted externally. All processing is completed within your iPhone. ------------------------------------------------------------ Advanced Appraiser License (Pro) ----------------------------------------------------------- • Unlimited storage of evidence audio • Unlimited voiceprint analysis • DTW/GMM detailed score display • Voiceprint spectrogram display • Audio file export • Audio import from files app Monthly and annual plans available. 7-day free trial included. ------------------------------------------------------------ What you can do with the free version ------------------------------------------------------------ • Audio recording and storage (up to 5 files) • Voiceprint analysis (up to 3 times a day) • Check MFCC basic score • Experience with demo audio ------------------------------------------------------------ Disclaimer ------------------------------------------------------------ This application is designed and provided for entertainment and hobby purposes only. The results of voiceprint analysis have no scientific or legal evidentiary value. It cannot be used for criminal investigation, law enforcement, judicial proceedings, or any other public or professional purpose. Terms of Use: https://coastandcorp.com/seimon/terms.html
Screenshots
Verdict
The clearest difference is ads: SEIMON at none against Rekoe's shown. Rekoe's advantage is update cadence (every 4 days vs every 3 weeks) and iOS requirement (14.0 vs 17.0). On price, in-app purchases and device support 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
Both are free to download. Rekoe sells 3 one-off in-app purchases and SEIMON sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Rekoe ships an update every 4 days, SEIMON every 3 weeks. The most recent releases landed on October 6, 2026 and October 9, 2026 respectively.
| Parameter | Rekoe | SEIMON |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Every 3 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 67 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Tsuyoshi Matsunaga | Takahiro Endo |
In-app purchases
Rekoe
- Ad Removal$1.99
- Premium Features$4.99
- All-in-One Pack$5.99
SEIMON
- 上級鑑定士ライセンス(月額)7 Days trial$3.991 Month
- 上級鑑定士ライセンス(年額)7 Days trial$29.991 Year









