PST Reader vs HDF5 Viewer · File Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PST Reader
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PST Reader opens .pst mail archives on iPhone, iPad, and Mac. No setup. No account. No internet. Drag in a file you exported a decade ago and read it like it was yesterday. WHAT IT DOES Browse the full folder tree from your archive: Inbox, Sent, Drafts, Junk, Deleted, and any custom folder you set up. Read every message with original formatting, recipients, date, and full headers when you need them. Search across the whole mailbox by sender, subject, body, or recipient. Results show which folder the match came from. Preview attachments in QuickLook. Save them to Files, share through any app, or drag them straight to Finder on Mac. Open contacts, appointments, tasks, and notes carried by the archive. Print messages or export them as PDF. PRIVACY The file stays on your device. Nothing leaves it. No analytics. No login. No server. PST Reader opens archives read-only. Your file is never modified. Decrypted attachment data is deleted from the temp folder when you close the archive. FORMATS Both Unicode and ANSI .pst files are supported. Single archives up to several gigabytes work fine. PRICING Free for up to 10 messages a day. Enough for the quick lookup most people need. Premium unlocks unlimited reading, full search, attachment export, and PDF print. Cancel anytime in your Apple subscription settings. Privacy Policy: https://yevgenii.dev/projects/pst-reader/ Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
HDF5 Viewer · File Reader
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HDF5 Explorer is a high performance offline HDF5 file reader, HDF5 file viewer, and dataset inspector designed for iPhone, iPad, and Mac. Quickly inspect, analyze, and convert complex scientific and engineering data structures without sending any files off your device. HIERARCHICAL TREE & DATASET INSPECTION Navigate large group trees, inspect dataset dimensions, dtypes, and attributes, and explore tabular data with fast virtualized pagination and search. VISUAL DATA EXPLORER • 2D Heatmaps with customizable color palettes (Viridis, Magma, Plasma, Inferno) • 1D Line plots with adaptive LTTB downsampling for smooth rendering of large series • 3D spatial heightmesh projection for volumetric previews HYPERSLAB SLICING & FILTERING Specify offset, count, and stride to extract and view exact numerical sub-windows from high-dimensional datasets. CODE GENERATOR & INTEGRATION Generate instant code snippets to read HDF5 file in Python using h5py dataset calls, MATLAB HDF5 tutorial syntax, Julia, or JavaScript HDF5 libraries. Whether you need a Python HDF5 example, a guide on how to view H5 file structures, or read HDF5 file Python code for your data pipeline, copy ready-to-run code in one tap. VERSATILE DATASETS & FORMATS Inspect any HDF5 dataset, multi-dimensional HDF5 datasets, HDF5 image dataset, or scientific HDF5 database. Open HDF5 files (.h5, .hdf5, .he5, .nc) from local storage, cloud services, or HDF5 S3 endpoints. Perform HDF5 to NetCDF conversions or export filtered hyperslabs to CSV and JSON formats. EXPERT TOOL & FILE RECOVERY Whether you are working with NetCDF4 HDF5 archives, HDF5 in Python projects, HDF5 LabVIEW recordings, or DLL outputs, HDF5 Explorer delivers a complete HDF5 file viewer, HDF5 reader, and HDF5 converter experience. Includes a diagnostic byte scanner to analyze corrupted archives. PRIVATE BY DESIGN All file parsing and data processing take place locally on your device. HDF5 Explorer requires no account creation, collects no telemetry on file contents, and never uploads your scientific data. Privacy Policy: https://rush.tools/privacy Terms of Use: https://rush.tools/terms
Screenshots
Verdict
The clearest difference is update cadence: HDF5 Viewer · File Reader at weekly against PST Reader's monthly. HDF5 Viewer · File Reader also leads on device support (4 vs 2) and iOS requirement (15.0 vs 17.6). On price, 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
Both are free to download. PST Reader sells 3 in-app purchases, starting at $1.99 per month and HDF5 Viewer · File Reader sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.
PST Reader ships an update monthly, HDF5 Viewer · File Reader weekly. The most recent releases landed on September 15, 2026 and September 22, 2026 respectively.
| Parameter | PST Reader | HDF5 Viewer · File Reader |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Yevgenii Kryzhanivskyi | Rush Tools LLC |
In-app purchases
PST Reader
- Premium Monthly$1.991 Month
- Premium Yearly$14.991 Year
- Lifetime Premium$29.99
HDF5 Viewer · File Reader
- Pro Weekly$6.997 Days
- Pro Annual$69.991 Year
Questions
Is PST Reader free?
Is HDF5 Viewer · File Reader free?
Do PST Reader or HDF5 Viewer · File Reader have ads?
Which is updated more often, PST Reader or HDF5 Viewer · File Reader?
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