Comparison

Guard7 vs Nasu

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

Head to head
About

Guard7

This tool provides robust encryption and decryption for files and emails, utilizing industry-standard cryptography. It simplifies complex cryptographic tasks for secure communication and data protection.

Highlights
  • Encrypt and decrypt files
  • Encrypt and decrypt emails
  • Sign and verify files
  • Organize contacts in groups
  • Efficient recipient management
  • Graphical frontend for GnuPG
Features
Read full description

Reliable, strong, safe. This is the iOS version of Guard7. Guard7 is a general purpose cryptography tool that can be used to encrypt, decrypt email and file, sign and verify files. It is the graphical frontend for the GNU Privacy Guard (GnuPG or GPG, http://www.gnupg.org) with additional features. Guard7 is an encryption and decryption system based on industry standard that can ensure the complete security of business negotiations or personal messages. It was developed to make the daily work with GnuPG simple and efficient. Why -------------------- The most difference between "public key cryptography" and normal "password protected cryptography" is that the first approach don't ask you to distribute any password to anyone or any unsafe place, e.g. email, chat app, or internet. And, you need an encryption tool that has industrial strength to protect your confidential information. Additional Features -------------------- Organise contacts in groups, then fast and efficiently organise dozens of recipients to send and receive file or email without setup recipients one by one and answer a bunch of boring questions and input repeat info again and again. Encrypt and decrypt a file just requires several taps, it's very simple, convenient and efficient. Common Tasks -------------------- a. list all contact groups, list all member of a group. b. encrypt and decrypt a file. c. set up recipients and encrypt an email, decrypt an encrypted email. d. sign and verify files. Thousands of people already benefited from the app in 2018 that year, but until today, they still..., what they are, then what they said what they doing. what the intention of the commenter is obvious. more maliciously attack, more affirmation of the app.

About

Nasu

Read full description

Nasu transcribes conversations you can't upload. Everything runs on your iPhone — the audio never leaves it. There is no account, no server, and nothing to sign. Transcription, speaker labels, and summaries all run on the device. When a conversation is confidential — an interview, a client meeting, a session — a cloud transcriber's privacy policy is a promise. On-device processing is the absence of the problem. WHAT YOU GET Nasu transcribes on this device. Recording and export are never gated. • Free — record any conversation. The first three transcripts are complete; after that, new transcripts stop at ten minutes. • Nasu Unlock (one-time) — unlimited transcript length, speaker labels, and custom vocabulary. • Nasu Pro (optional subscription) — everything in Unlock, plus structured summaries and note templates (including SOAP and DAP for clinicians) drafted on this device. 7-day free trial, then monthly or yearly; cancel any time in your Apple ID settings. WHO SAID WHAT • Speaker labels on every turn (Nasu Unlock) • Two-person mode for 1:1 conversations • Name a voice once, with consent, and later recordings label it • Tap any label to correct it MADE FOR CONFIDENTIAL WORK • Journalists: record an interview, get a labeled transcript — your source's words never touch a server • Research and user interviews: import files, label speakers, export clean text • Client work of any kind: meetings, consultations, coaching • Clinicians: SOAP and DAP note templates (Nasu Pro), a client roster, initials-only display, and a review step before any note is done PRIVATE BY ARCHITECTURE • Transcription, speaker labels, and summaries run entirely on this device • Works in airplane mode • No account, no sign-up, no analytics SDK • iCloud sync is opt-in and off by default — it uses your iCloud, not ours • Voiceprints are stored only with consent, encrypted, and deletable • Face ID / passcode lock RECORDING • Record live, transcribe after, or import a file • Recording continues with the screen locked • Custom vocabulary for names and technical terms (Nasu Unlock) • English, French, German, Italian, Portuguese, and Spanish Export Markdown, PDF, or plain text — never gated. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ What you record stays on your iPhone. Nasu just writes it down.

Screenshots

Guard74 screens
Nasu4 screens

Verdict

The call

The clearest difference is price: Nasu at Free against Guard7's $6.99. Guard7's advantage is update cadence (daily vs every 2 weeks) and iOS requirement (15.6 vs 17.5). On 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

Nasu is free to download; Guard7 costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Guard7 ships an update daily, Nasu every 2 weeks. The most recent releases landed on September 18, 2026 and October 16, 2026 respectively.

Scorecard3 real differences · 7 level
Guard7 versus Nasu: the parameters behind the verdict, then further details
ParameterGuard7Nasu
Price$6.99Free — better
Rating3.5 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyDaily — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.5
Further details — not scored
Size3 MB9 MB
Age rating4+4+
Developer斌 虞Zebel OU

In-app purchases

None

Guard7

No in-app purchases

None

Nasu

No in-app purchases

Questions

Is Guard7 free?
Guard7 costs $6.99, with no in-app purchases.
Is Nasu free?
Nasu is free to download, with no in-app purchases.
Do Guard7 or Nasu have ads?
Neither Guard7 nor Nasu shows ads.
Which is updated more often, Guard7 or Nasu?
Guard7 ships an update daily, and Nasu every 2 weeks. Most recently, Guard7 was updated on September 18, 2026 and Nasu on October 16, 2026.

Other comparisons