Comparison

Archium vs PST Viewer for Outlook

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

Head to head
About

Archium

Effortlessly scan, organize, and manage your documents with intelligent analysis and automatic filing. Quickly find what you need with powerful search and Siri integration. Streamline workflows using app shortcuts and automation.

Highlights
  • Scan and import documents
  • Automatic document organization
  • Intelligent search and indexing
  • Siri integration for context-aware questions
  • App Intents & Shortcuts for automation
  • Secure on-device storage
Features
Read full description

Archium: scan, organize & manage your documents. • Capture and manage everything effortlessly Import, scan, search, and share documents in seconds; all securely stored on your device. • Stay organized without the work Create smart Collections and let Archium automatically file documents where they belong. • Let automation do the busywork Use App Intents & Shortcuts to import attachments, sort documents, and streamline your workflows automatically. • Find what you need, instantly Intelligent analysis and indexing make every document easy to retrieve. • Ask questions, get answers, right in context Use Siri to ask about the document you’re viewing without leaving the app. • Search once, find everything Instantly search across all documents with powerful in-app search and full Spotlight support.

About

PST Viewer for Outlook

Access and search Outlook PST and OST email archives directly on your iPhone or iPad. Browse folders, read messages, and search emails offline without needing an internet connection. This app offers a private and reliable solution for managing your email archives.

Highlights
  • Open PST & OST email archive files
  • Browse folders and subfolders
  • Read email subjects, senders, recipients, and dates
  • View email body content
  • Search emails by keyword
  • Preview and export attachments
  • Works offline
Features
Read full description

Read & search Outlook PST & OST files Open and explore Outlook PST & OST email archives directly on your iPhone or iPad. PST Mail Viewer lets you browse folders, read messages, and search emails — all offline and on your device. Pay once. Use on iPhone, iPad & Mac. No subscription. No ads. Key Features • Open PST & OST email archive files • Browse folders and subfolders • Read email subjects, senders, recipients, and dates • View email body content (plain text and supported formats) • Search emails by keyword • Preview and export attachments • Works offline — no internet connection required Privacy First PST Mail Viewer processes PST & OST files locally on your device. • No user accounts • No analytics or tracking • No data collection • No server communication File Access The app uses the iOS document picker to let you select PST/OST files from supported locations such as the Files app or iCloud Drive. Access is limited to files you explicitly choose. Important Information • This app is not affiliated with Microsoft or Outlook • PST/OST is a file format developed by Microsoft • Performance may vary depending on PST file size and device capability PST Mail Viewer provides a simple, private, and reliable way to access PST email archives on iOS. Send feedback to: admin@yenpi.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Archium4 screens
PST Viewer for Outlook4 screens

Verdict

The call

The clearest difference is price: Archium at Free against PST Viewer for Outlook's $7.99. Archium also leads on in-app purchases (none vs 1). PST Viewer for Outlook's advantage is update cadence (weekly vs every 3 weeks) and ratings volume (5 vs 1). On rating, ads 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

Archium is free to download; PST Viewer for Outlook costs $7.99 up front. PST Viewer for Outlook sells 1 one-off in-app purchase. Archium asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Archium against 5.0 for PST Viewer for Outlook. That said, the two scores are not equally well evidenced: PST Viewer for Outlook has 5 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Archium ships an update every 3 weeks, PST Viewer for Outlook weekly. The most recent releases landed on August 9, 2026 and September 18, 2026 respectively.

Scorecard6 real differences · 4 level
Archium versus PST Viewer for Outlook: the parameters behind the verdict, then further details
ParameterArchiumPST Viewer for Outlook
PriceFree — better$7.99
Rating5.0 (1 ratings)5.0 (5 ratings)
Positive reviews—100.0% of reviews
Number of ratings15 — better
Update frequencyEvery 3 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterPaid
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS18.016.0 — better
Further details — not scored
Size21 MB20 MB
Age rating4+4+
DeveloperDaniel Bazzani延平 陈

Customer experience

Archium

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

PST Viewer for Outlook

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Archium

No in-app purchases

1 purchases

PST Viewer for Outlook

One-time1
  • PST Viewer Pro$7.99

Questions

Is Archium free?
Archium is free to download, with no in-app purchases.
Is PST Viewer for Outlook free?
PST Viewer for Outlook costs $7.99, and also offers in-app purchases.
Which has better reviews, Archium or PST Viewer for Outlook?
Archium and PST Viewer for Outlook are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.
Do Archium or PST Viewer for Outlook have ads?
Neither Archium nor PST Viewer for Outlook shows ads.
Which is updated more often, Archium or PST Viewer for Outlook?
Archium ships an update every 3 weeks, and PST Viewer for Outlook weekly. Most recently, Archium was updated on August 9, 2026 and PST Viewer for Outlook on September 18, 2026.

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