Comparison

Technology Readiness Levels vs SecureMyEmail

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

Head to head
About

Technology Readiness Levels

Quickly access definitions and descriptions for Department of Defense and NASA Technology Readiness Levels (TRLs). Understand the distinctions between different TRL stages and their supporting information.

Highlights
  • DoD and NASA TRL definitions
  • Detailed descriptions for each TRL
  • Supporting information (DoD)
  • SETR Process alignment (DoD)
  • Quick reference guide
Read full description

This is a quick-reference app for the Department of Defense and NASA Technology Readiness Levels (TRLs). It features definitions for both DoD and NASA! For each TRL, the app includes: *Definition *Description *Supporting information (DoD only) *SETR Process alignment (DoD only) Everyone needs a reminder now and then. What's the difference between TRL 5 and TRL 6? Is your invention at TRL 4 or at TRL 5? What's the difference between TRL 1 and TRL 2? All ThinChip Software apps are now available free of charge!

About

SecureMyEmail

Easily encrypt any email address with military-grade, end-to-end encryption. Send secure messages and attachments to anyone, even if they don't use the app. Features include self-destructing messages and HIPAA/GDPR compliance.

Highlights
  • PGP email encryption for any address
  • End-to-end encrypted email and attachments
  • Self-destructing ephemeral messages
  • Zero-knowledge encryption
  • Manage multiple email addresses
  • HIPAA and GDPR compliant
  • Full PGP compatibility
Features
Read full description

Encrypt all your **current** email addresses, business and personal, with SecureMyEmail. - Fast Company - "SecureMyEmail makes really private email surprisingly simple." - TechRepuiblic - "SecureMyEmail is email encryption for everyone." - techradar pro - "SecureMyEmail is an easy-to-use, advanced platform that applies military-grade encryption to your email correspondence." The SecureMyEmail™ secure email app for iOS (iPhone and iPad) provides easy PGP email encryption for any email address so everyone can enjoy the privacy of end-to-end encryption without having to switch their email provider. **Free Forever. Or, enjoy a 30-Day Free Trial** - Encrypt a Gmail, Yahoo, or Microsoft (Hotmail, Outlook.com, Live, MSN) email for free. - All other users receive a 30-day free trial and may encrypt up to 8 email addresses - Free encrypted email use will be confirmed to you at signup. **Send Encrypted Email and Attachments to Anyone** - Recipients don’t have to use SecureMyEmail. - Recipients can also reply and reply all, including to other non-users. - Email and attachments remain fully encrypted end-to-end for everyone. **Self-destructing ephemeral messages** Email sent to non-users can be set to self-delete from 1 hour up to 30 days. **Zero-Knowledge End-to-End Encrypted Email** Nobody but your recipient(s) — not your email provider, Internet company, identity thieves,  advertisers, snoopy governments, or even us — can ever read your encrypted email and attachments. **Super Easy to Set Up and Use** It’s like setting up any other email software. **Secure and Manage Multiple Email Addresses** Encrypt up to 8 personal and business email addresses. **Use for all your Email or in Conjunction with other Clients** You can use SecureMyEmail as your primary email software or just use for encryption. You can keep using your favorite email app or webmail. We keep everything synced. **HIPAA and GDPR Compliant Email** Our encrypted email is perfect for HIPAA and GDPR requirements. Surpasses all encryption standards to keep personal and patient data safe and private. **Swiss Privacy** SecureMyEmail systems and servers are housed in Switzerland data centers. **Full PGP Compatibility** - Creates genuine PGP keys that you can use with other PGP software and websites. - Invite other PGP users for free for direct communication. **Advanced Crypto Features** Although super simple to use, we do have some goodies for the cryptographically savvy. Encryption key management, on-demand key regeneration, import/export of PGP keys, etc. Read our terms of service at: https://www.securemyemail.com/legal/terms/ We’d love to hear your comments, questions, and concerns! Please email us at: info@securemyemail.com

Screenshots

Technology Readiness Levels3 screens
SecureMyEmail4 screens

Verdict

The call

The clearest difference is rating: Technology Readiness Levels at 5.0 against SecureMyEmail's 3.5. Technology Readiness Levels also leads on in-app purchases (none vs 3). SecureMyEmail's advantage is update cadence (every 2 months vs every 8 months) and ratings volume (39 vs 2). On price and ads 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. SecureMyEmail sells 3 in-app purchases, starting at $3.99 per month. Technology Readiness Levels asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Technology Readiness Levels holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: SecureMyEmail has 39 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Technology Readiness Levels ships an update every 8 months, SecureMyEmail every 2 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
Technology Readiness Levels versus SecureMyEmail: the parameters behind the verdict, then further details
ParameterTechnology Readiness LevelsSecureMyEmail
PriceFreeFree
Rating5.0 (2 ratings) — better3.5 (39 ratings)
Positive reviews—43.3% of reviews
Number of ratings239 — better
Update frequencyEvery 8 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size1 MB40 MB
Age rating4++4
DeveloperRussell ShannonWiTopia

Customer experience

Technology Readiness Levels

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

SecureMyEmail

All ratings39 ratings
Positive56.4%
Neutral7.7%
Negative35.9%
Written reviews30 reviews
Positive43.3%
Neutral10.0%
Negative46.7%

In-app purchases

None

Technology Readiness Levels

No in-app purchases

3 purchases

SecureMyEmail

Subscriptions2
  • SecureMyEmail$3.991 Month
  • SecureMyEmail$29.991 Year
One-time1
  • SecureMyEmail Lifetime Plan$99.99

Questions

Is Technology Readiness Levels free?
Technology Readiness Levels is free to download, with no in-app purchases.
Is SecureMyEmail free?
SecureMyEmail is free to download, with in-app purchases available.
Which has better reviews, Technology Readiness Levels or SecureMyEmail?
Technology Readiness Levels is rated higher. Technology Readiness Levels averages 5.0 out of 5 from 2 ratings, while SecureMyEmail averages 3.5 from 39 ratings.
Do Technology Readiness Levels or SecureMyEmail have ads?
Neither Technology Readiness Levels nor SecureMyEmail shows ads.
Which is updated more often, Technology Readiness Levels or SecureMyEmail?
Technology Readiness Levels ships an update every 8 months, and SecureMyEmail every 2 months. Most recently, Technology Readiness Levels was updated on October 21, 2026 and SecureMyEmail on October 24, 2026.

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