VOICEMO vs SEIMON
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VOICEMO
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Output file ■Effects •Reverb •Gain •Pitch •Speed •Distortion •Filter(low, high)
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 in-app purchases: VOICEMO at none against SEIMON's 2. VOICEMO also leads on iOS requirement (14.1 vs 17.0). SEIMON's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 4 months). On price 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. SEIMON sells 2 in-app purchases, starting at $3.99 per month. VOICEMO asks for nothing beyond the download.
VOICEMO ships an update every 4 months, SEIMON every 3 weeks. The most recent releases landed on October 18, 2026 and October 9, 2026 respectively.
| Parameter | VOICEMO | SEIMON |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 4 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | kohei yamane | Takahiro Endo |
In-app purchases
VOICEMO
No in-app purchases
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









