Comparison

Guerin vs Useful Voice Changer

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

Head to head
About

Guerin

This app offers tools to creatively manipulate audio and video media, allowing users to adjust speed, pitch, and add effects. It fosters a community for sharing creations and discovering new content.

Highlights
  • Adjust media speed
  • Modify audio pitch
  • Add reverb effects
  • Share creations
  • Discover content
  • Community connection
Read full description

Welcome to Guerin, your new home for creativity and complete control over your media. Slow it down, add reverb, pitch it up—make it yours. Share, discover, and connect with a community moving culture forward through creativity and expression. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.guerinapp.com/privacy-policy

About

Useful Voice Changer

Features
Read full description

A handy app for changing the voice in videos is here! This app lets you easily transform the audio in a video you choose and save it as a new video with a different voice. It's perfect when you want to change the impression of a voice or avoid using the original voice as it is. After selecting a video, you can adjust "Voice Type", "Pitch", and "Timbre", then preview the converted audio before creating the video. You can also set the "Start Time" and listen to the part you care about first, so you can fine-tune the result with confidence. Converted videos can be saved to your Camera Roll or to Files. It's useful when you want to change the feel of a talking video, adjust the voice before posting to social media, or keep a video while making the original voice a little less recognizable. From importing a video to previewing, generating, and saving, everything follows a simple and easy-to-understand flow. Video and audio processing are performed on your device, so you can review the result locally as you work. 【How to use】 1. Tap "Select Video" and choose the video you want to convert. 2. Adjust "Voice Type", "Pitch", and "Timbre", and set "Start Time" if needed. 3. Tap "Play Voice Preview" to hear the converted audio. 4. Tap "Generate Video with This Voice" to create the converted video. 5. On the confirmation screen after generation, check the result and tap "Save to Camera Roll" or "Save to Files" to save it. If you want an easy way to change the voice in your videos, give this app a try.

Screenshots

Guerin4 screens
Useful Voice Changer4 screens

Verdict

The call

The clearest difference is update cadence: Useful Voice Changer at every 5 days against Guerin's every 6 months. Useful Voice Changer also leads on iOS requirement (15.6 vs 18.0). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Guerin sells 1 in-app purchase, starting at $10.99 per month and Useful Voice Changer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Guerin ships an update every 6 months, Useful Voice Changer every 5 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 8 level
Guerin versus Useful Voice Changer: the parameters behind the verdict, then further details
ParameterGuerinUseful Voice Changer
PriceFreeFree
Rating4.7 (7 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 6 monthsEvery 5 days — better
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.6 — better
Further details — not scored
Size216 MB83 MB
Age rating12+17+
DeveloperChase Guerinkatapu.net

In-app purchases

1 purchases

Guerin

Subscriptions1
  • Premium Monthly$10.991 Month
1 purchases

Useful Voice Changer

One-time1
  • Remove Ads$2.99

Questions

Is Guerin free?
Guerin is free to download, with in-app purchases available.
Is Useful Voice Changer free?
Useful Voice Changer is free to download, with in-app purchases available.
Do Guerin or Useful Voice Changer have ads?
Both Guerin and Useful Voice Changer show ads.
Which is updated more often, Guerin or Useful Voice Changer?
Guerin ships an update every 6 months, and Useful Voice Changer every 5 days. Most recently, Guerin was updated on October 30, 2026 and Useful Voice Changer on October 25, 2026.

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