Comparison

PST Reader · Opener, Converter vs Hum Memo

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

Head to head
About

PST Reader · Opener, Converter

Access, read, and convert Outlook PST and OST archive files without needing Outlook installed. This app allows you to quickly open large archives, search for specific content, and export data into various formats like PDF, MBOX, and EML.

Highlights
  • Open PST and OST archives
  • Read emails, contacts, and calendar events
  • Full text search across archives
  • Filter by sender, date, and attachments
  • Convert archives to PDF, MBOX, EML
  • Export attachments and contacts
  • Works fully offline
Features
Read full description

PST Reader is the fastest way to open, read, search and convert Outlook PST and OST archives on your iPhone, iPad and Mac, with no Outlook and no account needed. Got a .pst or .ost file you can't open? PST Reader loads it in seconds, even archives with tens of thousands of messages, and shows every email, folder, contact and calendar event exactly as it was stored. KEY FEATURES • Open .pst and .ost archives from Files, Mail, Safari, AirDrop and any other app • Browse the original folder tree, read every message and view attachments • Lightning fast full text search across the whole archive • Filter by folder, sender, date and attachments • Works fully offline, so nothing is ever uploaded CONVERT AND EXPORT • Convert the whole archive, or just your current filtered view, to a single combined PDF • Convert to one MBOX file, or to a ZIP of EML files that keeps your folder structure • Export contacts to vCard and calendar events to ICS • Export the message list to CSV, or the full data to JSON • Save every attachment as a ZIP, or export any single message to PDF or EML NO OUTLOOK NEEDED Read and convert your Outlook data files on their own. No Outlook install, no account, no sign in, no tracking. Everything happens on your device. PST Reader turns an archive you couldn't open into something you can read, search, convert and share in seconds.

About

Hum Memo

This voice-first productivity app transforms spoken thoughts, conversations, and meetings into organized notes, actionable tasks, and calendar events. It offers advanced features like multilingual transcription, speaker separation, and AI-powered insights, all while prioritizing user privacy.

Highlights
  • Voice note and meeting recording
  • Speech-to-text transcription
  • Task and event extraction
  • Multilingual and speaker recognition
  • Searchable notes and folders
  • Calendar integration
Features
Read full description

Think out loud. Leave with a plan. Turn a passing thought, a meeting recap, or a brain dump into organized notes and clear next steps. Hum Memo brings voice capture to your iPhone and Apple Watch. CAPTURE THE MOMENT • Speak naturally. Turn recordings into transcripts, summaries, titles, and tags. • Record from your wrist. Save a voice note on Apple Watch and send it to your paired iPhone for processing. • Type when talking isn’t convenient, or save supported links alongside your notes. • Record in multiple languages, including conversations that switch between them. MAKE YOUR WORDS USEFUL • Find the next step. Hum Memo suggests tasks and calendar events from your notes for you to review and add. • Keep things organized. Search your notes and group them into folders. • Make it yours. Edit titles, summaries, and transcripts. • Take your work with you. Export notes to Notion or Obsidian, send tasks to Reminders, Todoist, or Things, and add events to your calendar. GO DEEPER WITH HUM MAX • Ask questions across your notes, with references back to the source. • Explore connections between people and topics. • Recognize enrolled speakers in your recordings. YOUR NOTES STAY YOURS No ads. Your content is never sold or used for advertising. Cloud features process recordings and text through our service providers. You can delete your account in Settings; see our Privacy Policy for retention details. MEMBERSHIP Hum Memo requires an account and an active Hum Pro or Hum Max subscription. Monthly and yearly plans are available, with free trials for eligible customers. Features and monthly usage allowances vary by plan. Current prices, allowances, and available trial offers are shown in the app before purchase. The Apple Watch companion requires Hum Memo on your paired iPhone. Subscriptions renew automatically unless canceled. Manage or cancel your subscription in your Apple Account settings. Privacy Policy: https://hummemo.com/privacy.html Terms of Use: https://hummemo.com/terms.html

Screenshots

PST Reader · Opener, Converter4 screens
Hum Memo4 screens

Verdict

The call

The clearest difference is review sentiment: Hum Memo at 100% against PST Reader · Opener, Converter's 0%. PST Reader · Opener, Converter's advantage is iOS requirement (16.0 vs 26.2). On price, update cadence, ads and in-app purchases 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. PST Reader · Opener, Converter sells 7 in-app purchases, starting at $8.99 per 7 days and Hum Memo sells 4 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
PST Reader · Opener, Converter versus Hum Memo: the parameters behind the verdict, then further details
ParameterPST Reader · Opener, ConverterHum Memo
PriceFreeFree
Rating—5.0 (7 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings—7 — better
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, Mac — betteriPhone, Apple Watch
Requires iOS16.0 — better26.2
Further details — not scored
Size14 MB771 MB
Age rating4+4+
DeveloperRush Tools LLCJZMB GmbH

Customer experience

PST Reader · Opener, Converter

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Hum Memo

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

7 purchases

PST Reader · Opener, Converter

Subscriptions7
  • Pro Weekly3 Days trial$8.997 Days
  • Pro Weekly$9.997 Days
  • Pro Annual$19.991 Year
Show 4 more
  • Pro Annual$29.991 Year
  • Pro Annual$39.991 Year
  • Pro Annual2 variants$49.991 Year
  • Pro Annual$79.991 Year
4 purchases

Hum Memo

Subscriptions4
  • Hum Memo Pro7 Days trial$12.991 Month
  • Hum Memo Max7 Days trial$19.991 Month
  • Hum Memo Pro7 Days trial$89.991 Year
Show 1 more
  • Hum Memo Max7 Days trial$149.991 Year

Questions

Is PST Reader · Opener, Converter free?
PST Reader · Opener, Converter is free to download, with in-app purchases available.
Is Hum Memo free?
Hum Memo is free to download, with in-app purchases available.
Do PST Reader · Opener, Converter or Hum Memo have ads?
Neither PST Reader · Opener, Converter nor Hum Memo shows ads.
Which is updated more often, PST Reader · Opener, Converter or Hum Memo?
PST Reader · Opener, Converter ships an update weekly, and Hum Memo weekly. Most recently, PST Reader · Opener, Converter was updated on October 31, 2026 and Hum Memo on October 24, 2026.

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