Comparison

ひそひそ vs Relay Secure Messenger

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

Head to head
About

ひそひそ

Features
Read full description

「ひそひそ」とは 「ひそひそ」は、送信したメッセージが一定時間後に自動で削除される、プライバシー重視型のメッセージアプリです。 普段の口頭での会話のように、会話内容が記録に残らず、伝えた相手だけに届く――。そんな自然なコミュニケーションのあり方をデジタルで実現します。 デフォルトでは、送信から10分後にメッセージが自動で削除される設計となっていますが、削除までの時間は設定から自由に変更可能です。 トークルームを作成して他のユーザーを招待すれば、グループチャットも手軽に楽しめます。 主な機能 メッセージが自動で消える(削除時間は設定可能) トークルーム機能(個別チャット/グループチャット対応) 招待リンクやQRコードで簡単に参加可能 安全なアカウント管理(メールアドレス+パスワード認証) 使い方ガイド 1. アカウント登録 アプリをインストール後、メールアドレスとパスワードを登録してアカウントを作成します。機種変更後も同じ情報でログイン可能です。 2. トークルームの作成 任意のトークルーム名を入力して作成。右上のメニューから「招待リンクを送る」または「QRコードを表示」で他のユーザーを招待できます。 3. トークルームへの参加 受け取った招待リンクをタップするか、QRコードを読み取ることで簡単に参加できます。 ご利用にあたって 本アプリの利用には、アカウント登録が必要です。 インターネット接続が必要です。 アプリ内に広告が表示される場合があります。 「ひそひそ」は、会話の"痕跡"を最小限にとどめ、安心して使えるチャット環境を提供します。 気軽な日常のやりとりにも、大切な人との特別な会話にも、ぜひご活用ください。

About

Relay Secure Messenger

This app offers a unique voice communication experience by transcribing speech on your device, encrypting it as text, and reconstructing it in your voice privately in real-time. It ensures conversations remain yours by never transmitting raw audio over the network.

Highlights
  • On-device speech transcription
  • End-to-end encrypted text transmission
  • Real-time voice reconstruction
  • No raw audio transmission
  • Private conversations
  • Ad-free experience
Features
Read full description

Relay reimagines voice communication from the ground up. When you make a call on Relay, your voice never travels the network as audio. Speech is transcribed on your device, encrypted, and transmitted as text. On the other end, your words are reconstructed in your voice but privately, in real time. Your conversations stay yours. How it works? Speech is transcribed locally on your device. Text is encrypted end-to-end using the McNeal Protocol. Your cloned voice plays on the receiver's device. No raw audio ever leaves your phone. Built for people who mean it Whether you're protecting sensitive business conversations or simply believe your voice calls shouldn't be anyone else's business, Relay was built for you. What makes Relay different? Most encrypted apps protect your messages in transit. Relay goes further because the audio itself is never transmitted. There's nothing to intercept. End-to-end encrypted messaging. Voice calls without audio transmission. On-device speech processing. No ads. No data selling. Ever. Your calls. Your voice. Your terms.

Screenshots

ひそひそ3 screens
Relay Secure Messenger4 screens

Verdict

The call

The clearest difference is ads: Relay Secure Messenger at none against ひそひそ's shown. ひそひそ's advantage is iOS requirement (14.0 vs 26.0). On price, update cadence, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ひそひそ ships an update fortnightly, Relay Secure Messenger every 3 weeks. The most recent releases landed on September 20, 2026 and September 5, 2026 respectively.

Scorecard2 real differences · 7 level
ひそひそ versus Relay Secure Messenger: the parameters behind the verdict, then further details
ParameterひそひそRelay Secure Messenger
PriceFreeFree
Rating5.0 (1 ratings) — better
Number of ratings1 — better
Update frequencyFortnightly — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesNoNo
MonetizationFree
DevicesiPhone, iPod — betteriPhone
Requires iOS14.0 — better26.0
Further details — not scored
Size105 MB33 MB
Age rating4+4+
DeveloperAgoraCreation Inc.Antonio Lambert

In-app purchases

None

ひそひそ

No in-app purchases

None

Relay Secure Messenger

No in-app purchases

Questions

Is ひそひそ free?
ひそひそ is free to download, with no in-app purchases.
Is Relay Secure Messenger free?
Relay Secure Messenger is free to download, with no in-app purchases.
Do ひそひそ or Relay Secure Messenger have ads?
ひそひそ shows ads; Relay Secure Messenger does not.
Which is updated more often, ひそひそ or Relay Secure Messenger?
ひそひそ ships an update fortnightly, and Relay Secure Messenger every 3 weeks. Most recently, ひそひそ was updated on September 20, 2026 and Relay Secure Messenger on September 5, 2026.

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