KOETRON vs VoiceSound
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KOETRON
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KOETRON — One-tap voice transformations! KOETRON is a simple, playful voice app where you record a short clip and transform it with a single tap. Hear your voice instantly in different styles—Plushie, Robot, Ghost, Kaiju, UFO, and more. With an easy, kid-friendly interface, everyone can enjoy quick “voice toy” fun at home or on the go. Works offline, too. How to use 1-Tap Record to capture a short voice clip. 2-Tap your favorite Effect button. 3-The transformed voice plays right away—try it as many times as you like! Device & settings -Microphone access is required on first use. If you denied it, please enable the mic in your device settings. -Adjust recording/playback volume with your device’s volume buttons. -Recordings are processed on your device. This app does not transmit your recordings externally. Made by Tantanto Company We’d love to hear your feedback!
VoiceSound
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Talk like a robot, a dragon or a chipmunk, live as you speak. VoiceSound changes your voice in real time, lets you design a voice of your own and comes with a meme soundboard for every chat. Record a clip, remix it and share it as audio or as a video that's ready to post. Live voice effects • 27 voices: Robot, Alien, Chipmunk, Helium, Deep, Echo, Megaphone, Ghost, Whisper, Monster, Underwater, Telephone, Cathedral, Distorted, Reverb, Radio, Demon, Vampire, Frog, Bee, Dragon, Baby, Drunk, Cave, Stadium and 8-Bit, plus your Original voice • An intensity slider on every effect, from a light touch to full-on • Hold to hear your original voice and compare • Pick your microphone and speaker: built-in, wired headphones or Bluetooth Design your own voice • Seven sliders: pitch, tone, echo, reverb, distortion, robot and lo-fi • Hear every change live while you drag • Give it a name and an emoji and keep it next to your effects Record, remix, share • One tap records your voice with the effect on • Change the effect on a finished recording, or reverse it for backwards messages • Play clips back at 0.5x to 2x speed or on loop • Share as audio to any app, or as a vertical video with the effect name and a moving waveform Meme soundboard • 300+ sounds: memes, reactions, pranks, animals, cartoons, games, sports, notifications and more • Browse by category, search in your language and long-press to favorite • Send any sound straight to a chat Make it yours • 12 color themes in light and dark mode • 16 languages • Works on iPhone, iPad and Mac Tip: plug in or pair headphones before you start, so the speaker doesn't feed back into the mic. Privacy Your voice is processed on your device and never uploaded. Recordings stay on your device until you share them. No account, no sign-up, no ads. VoiceSound Pro Recording, reversing and sharing are free, and 17 voices are included. Pro unlocks the 10 premium effects (Demon, Vampire, Frog, Bee, Dragon, Baby, Drunk, Cave, Stadium, 8-Bit), saving your own voices, videos without the watermark, all 12 themes and the premium sound categories (Cinematic, Horror, Edits). Try any locked effect free for 15 seconds before you decide. Pro comes as a weekly, monthly or yearly subscription (the yearly plan starts with a 3-day free trial for new subscribers) or as a one-time lifetime purchase. Payment is charged to your Apple Account when you confirm the purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period; renewal is charged within the 24 hours before the period ends. Manage or cancel anytime in your Apple Account settings. Any unused part of a free trial is forfeited when you buy a subscription. Terms of Use: https://oguzcc.github.io/web/voicesound/terms.html Privacy Policy: https://oguzcc.github.io/web/voicesound/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: KOETRON at none against VoiceSound's 4. VoiceSound's advantage is ads (none vs shown) and update cadence (every 3 days vs every 6 months). On price 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. VoiceSound sells 4 in-app purchases, starting at $4.99 per 7 days. KOETRON asks for nothing beyond the download.
KOETRON ships an update every 6 months, VoiceSound every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | KOETRON | VoiceSound |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | Every 3 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 46 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | SACHIKO HAMATSU | Oguz Can |
In-app purchases
KOETRON
No in-app purchases
VoiceSound
- VoiceSound Pro Weekly$4.997 Days
- VoiceSound Pro Monthly$9.991 Month
- VoiceSound Pro Yearly3 Days trial$29.991 Year
- VoiceSound Pro Lifetime$49.99








