PSMailbox vs SimpleMail by WK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PSMailbox
Access your secure email, cloud storage, and calendar from a single application. Enjoy the full functionality of your PSMail.net account on your mobile devices.
- Secure email access
- Cloud storage integration
- Calendar management
- Online account access
- Mobile functionality
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PSMailbox provides secure and online access to your PSMail.net account with all the features of secure email, cloud storage and calendar.
SimpleMail by WK
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SimpleMail is a fast, private email client for iPhone and iPad. Connect any standard IMAP/SMTP account and get real-time new-mail notifications, folders, search, attachments, and compose with signatures. Read messages in light or dark, in English or Korean. Your email data stays on your device. SimpleMail talks directly to your mail server over TLS, and passwords are stored only in the system Keychain. The app displays advertising and requests App Tracking Transparency permission before initializing the advertising SDK. Features - IMAP + SMTP for any standard mail provider - Real-time push via IMAP IDLE - Folders, server-side search - Swipe to delete, junk, mark read/unread, flag - Compose with signatures - View and share attachments - Light / Dark message rendering - English & Korean
Screenshots
Verdict
The clearest difference is ads: PSMailbox at none against SimpleMail by WK's shown. PSMailbox also leads on iOS requirement (14.2 vs 17.0). SimpleMail by WK's advantage is update cadence (every 2 weeks vs every 2 months). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PSMailbox ships an update every 2 months, SimpleMail by WK every 2 weeks. The most recent releases landed on October 1, 2026 and October 2, 2026 respectively.
| Parameter | PSMailbox | SimpleMail by WK |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 14.2 — better | 17.0 |
| Further details — not scored | ||
| Size | 42 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Argonaut Quality Systems Inc. | Wonkyoung Seo |
In-app purchases
PSMailbox
No in-app purchases
SimpleMail by WK
No in-app purchases
Questions
Is PSMailbox free?
Is SimpleMail by WK free?
Do PSMailbox or SimpleMail by WK have ads?
Which is updated more often, PSMailbox or SimpleMail by WK?
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