Comparison

Relay Secure Messenger vs PGP Chat

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

Head to head
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.

About

PGP Chat

Features
Read full description

SecurePGP Chat brings military-grade privacy to your iPhone. Built on the OpenPGP standard, it lets you send and receive encrypted messages that only you and your contact can read — no servers, no tracking, and no data sharing.

Screenshots

Relay Secure Messenger4 screens
PGP Chat4 screens

Verdict

The call

The clearest difference is update cadence: PGP Chat at every 5 days against Relay Secure Messenger's every 3 weeks. PGP Chat also leads on iOS requirement (15.1 vs 26.0). 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Relay Secure Messenger ships an update every 3 weeks, PGP Chat every 5 days. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

Scorecard2 real differences · 7 level
Relay Secure Messenger versus PGP Chat: the parameters behind the verdict, then further details
ParameterRelay Secure MessengerPGP Chat
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPod — better
Requires iOS26.015.1 — better
Further details — not scored
Size33 MB14 MB
Age rating4+4+
DeveloperAntonio LambertSandro Meier

In-app purchases

None

Relay Secure Messenger

No in-app purchases

None

PGP Chat

No in-app purchases

Questions

Is Relay Secure Messenger free?
Relay Secure Messenger is free to download, with no in-app purchases.
Is PGP Chat free?
PGP Chat is free to download, with no in-app purchases.
Do Relay Secure Messenger or PGP Chat have ads?
Neither Relay Secure Messenger nor PGP Chat shows ads.
Which is updated more often, Relay Secure Messenger or PGP Chat?
Relay Secure Messenger ships an update every 3 weeks, and PGP Chat every 5 days. Most recently, Relay Secure Messenger was updated on October 3, 2026 and PGP Chat on September 30, 2026.

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