VoicePrinter vs Weelog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VoicePrinter
Analyze sound and voice in real-time with detailed visual representations. Explore human voices, environmental sounds, music, and more. Offers recording, playback, and import/export features with a premium upgrade.
- Real-time sound visualization
- Human voice analysis
- Environmental sound analysis
- Music analysis
- Recording and playback
- Import/export audio files
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Sound is decomposed into two dimensions and displayed continuously over time. The premium version offers a new style of audio recorder/player. This app can be used for analysis of Human voice, Environmental sound, Sound of animals, musics, etc. The specifications are as follows. Sampling rate = 10000 to 44100 Hz Display maximum frequency = 1000 to 22050 Hz Display time range = 2 to 10 seconds Frequency axis display resolution = 100 Time axis display resolution = 10 / sec From version 1.1, recording, playback, import, and export functions based on sound and voiceprints can be used by in-app purchase. In this case, banners will not be displayed. The premium version allows recording, playback, import of external sound source files, and external output. ・Record under the following conditions Sampling frequency = 10000~44100Hz ・Display audio analysis results under the following conditions (audio is played in sync with the analysis screen) Maximum display frequency (high-pitched display frequency limit) = 1000~22050Hz (half the sampling frequency or less) Display time range (time that can be displayed on one screen) = 2~10 seconds Frequency display resolution (frequency axis: number of data displayed on the vertical axis) = 200 points Time axis display resolution (time axis: display interval (pitch) on the horizontal axis) = 50~200ms (10~200 points) ・Importing external audio source files Imports 16-bit linear PCM mono audio sources. (In the case of stereo, only 1ch is imported.) ・External output Outputs as 16-bit linear PCM mono. *To input and output data to iCloud Drive, you must enable iCloud Drive in System Preferences. *******
Weelog
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An exclusive app for Feiyao Technology equipment, used for device control to take photos and videos. Functions and optimizations will continue to be added in the future. It is fun and interesting, and you are invited to experience it!
Screenshots
Verdict
The clearest difference is in-app purchases: Weelog at none against VoicePrinter's 1. Weelog also leads on ads (none vs shown) and update cadence (weekly vs every 47 months). On price, 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
Both are free to download. VoicePrinter sells 1 one-off in-app purchase. Weelog asks for nothing beyond the download.
VoicePrinter ships an update every 47 months, Weelog weekly. The most recent releases landed on October 10, 2026 and October 2, 2026 respectively.
| Parameter | VoicePrinter | Weelog |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 47 months | Weekly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 5 MB | 159 MB |
| Age rating | 4+ | 4+ |
| Developer | HIROFUMI MARUO | Shenzhen Feiyao Motor Technology Co., Ltd |
In-app purchases
VoicePrinter
- Premium Functions$0.99
Weelog
No in-app purchases









