Tool profile
Penzu: cost, fit and limits
Penzu is an online diary service made by Penzu Inc. that offers a free Basic plan and paid Pro tiers with encryption locking, tagging, PDF export and writing prompts, and names no AI feature on its pages.
What to know first
Penzu is always free at the Basic level, with unlimited entries, mobile apps and simple reminders. Penzu Pro costs $29.99 per year, Pro+ costs $49.99 per year and a Pro+ Lifetime plan costs $199.99 once. The pricing section showed a loading message when fetched, so checkout prices may differ. The privacy policy carries a No AI training headline, and no AI feature is named.
Penzu at a glance
| Maker | Penzu Inc., Canada |
|---|---|
| Free plan | Yes |
| Entry price | Free (Basic); Penzu Pro $29.99 per year |
| API access | No |
| Category | Best AI Journaling Apps in 2026, rank 7 of 12 |
| Website | penzu.com |
Who Penzu is best for
Writers who want no AI in the loop
The vendor names no AI feature, and the privacy policy says content is never used to train AI models, which suits people who want a plain diary and nothing else.
Buyers who dislike subscriptions
A $199.99 lifetime Pro+ option exists, which removes renewal for people who plan to write for many years and would rather pay once than watch a yearly charge.
People who write by email
Penzu Post, on Pro, lets users send entries by email instead of opening the app, which helps people who capture thoughts in small moments from any device they have.
Penzu plans and pricing
| Plan | Price | What it includes |
|---|---|---|
| Basic | Free | Unlimited entries, mobile apps, basic covers and fonts, simple reminders; no stated caps on the free plan. |
| Penzu Pro | $29.99 per year | Encryption locking, custom covers, fonts and colors, tagging, PDF export, writing prompts and Penzu Post for writing entries by email. |
| Penzu Pro+ | $49.99 per year | Everything in Pro plus handwritten fonts, zen mode, version history and entry recovery, and premium support for account questions. |
| Penzu Pro+ Lifetime | $199.99 one-time payment | Everything in Pro+ for a single payment with no renewal, which equals about four years of the yearly Pro+ price. |
Checked November 2026.
What Penzu does
- Unlimited free entries
- The Basic plan has no stated caps on entries, so a long diary does not force an upgrade, and mobile apps are included in the free plan as well.
- Encryption locking
- Pro adds a lock for entries, a feature that the free plan lacks, so protection for a private diary is part of the $29.99 yearly price rather than free.
- Penzu Post
- Entries can be written by email, a feature of the Pro plan that lets people capture a thought from any mail client without opening the Penzu app first.
- Version history
- Pro+ keeps earlier versions of an entry and supports recovery of entries, which is useful after an accidental edit or deletion in a long-running journal.
- Prompts and tagging
- Writing prompts and tags are Pro features that help sort entries by theme and give a starting line on days when the page feels empty to the writer.
How Penzu handles your data
Penzu's privacy policy leads with No AI training and says content is never used to train AI models. Active accounts keep data while the account is active. Deactivated accounts are held up to 90 days. Deleted accounts are removed within 30 days, with some backups kept up to 90 more days. The policy says data may be transferred to, stored and processed in Canada or other countries and names no data center. No certifications are named; the policy mentions regular security audits. The Toronto address in the policy is the basis for the Canada label.
Where Penzu falls short in practice
- Pro prices may differ. The pricing section displayed Loading current pricing when fetched, and monthly prices are not listed, so confirm the yearly amounts at checkout before you budget for Pro or Pro+.
- Core tools sit behind Pro. Tagging, PDF export and encryption locking need Pro at $29.99 per year. The free plan's reminders are simple, so a writer who wants a lock must pay.
- No AI features. The pages checked name no AI feature, so summaries, chat and search by meaning are not available, and a writer who wants them must move to another app in this list.
Works with
Alternatives to Penzu
Penzu: common questions
Does Penzu use AI?
The vendor pages we read name no AI feature. The privacy policy leads with No AI training and says content is never used to train AI models. If AI summaries or a chat coach matter to you, look at Rosebud or Reflection, which describe those features on their own pages.
How much is Penzu Pro?
Penzu Pro is $29.99 per year, Pro+ is $49.99 per year and Pro+ Lifetime is $199.99 once, per the pricing page. That page showed a loading message when fetched, so check the amount at checkout. Monthly prices are not listed on the pages we read.
Is Penzu free?
Yes. The Basic plan is always free per the pricing page, with unlimited entries, mobile apps and simple reminders. Tagging, PDF export and encryption locking need Pro, and handwritten fonts and version history need Pro+, so check which of those matter to you.
How long does Penzu keep a deleted account?
Deleted accounts are removed within 30 days, and some backups can last up to 90 more days. Deactivated accounts are kept up to 90 days, according to the privacy policy. Active accounts keep data as long as the account stays active.
Can I write Penzu entries by email?
Yes, on Penzu Pro. Penzu Post lets you write entries via email. The pages we read do not describe attachment handling, delivery time or whether replies are sent back, so test with one entry before you rely on it for daily writing.