GeoID vs PassFM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GeoID
A professional tool for measuring and analyzing geological structures. It features a geological compass, stereographic projection, and instability analysis with wireless data sharing capabilities.
- Geological compass
- Stereographic projection
- Instability analysis
- Wireless data sharing
- Analysis reports
- Manual data input
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* Note : This app uses built-in magnetometer, so iPod Touch does not provides direction of structure/device. GeoID is a professional tool for measuring and analyzing geological structures. This application includes geological compass, stereographic projection, instability analysis and wireless data sharing. • Features - The clinometer works with all attitude of the device and enables user to measure any structure - A stability indicator in the clinometer maximizes its accuracy - Provides many options including notation type, measurement interval, avarage calculation, projection type, etc. - Can input data manually using several input methods - Immediate projection and analysis of selected project - Provides stereonet-based slope stability analysis - Supports zooming while plotting/analyzing - Wireless data transferring via Bluetooth and E-mail - Generates analysis reports with stereonet images and sends them by e-mail - Supports all iOS devices Developed by Engineering Geology & GIS Lab., Dept. of Energy Systems Engineering, Seoul National University, South Korea. Prof. Hyeong Dong Park wishes to express thanks to Prof. Edward Keller and other faculty members of the Earth Sciences Department of University of California Santa Barbara for the useful suggestions and discussions on the improvement of GeoID during Prof. Park's academic visit from 2011-2013.
PassFM
Securely store and manage your private files, including photos, videos, documents, and notes. This app offers a private browser for safe web activity and allows for easy file import, export, and sharing. Protect your sensitive information with password protection and local storage.
- Password-protected file storage
- Private photo and video viewer/player
- Built-in private web browser
- Import, export, and share files
- Private contact and note management
- WiFi file transfer
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PassFM is a private file manager to protect your privacy. Setup password and lock your private albums, photos, videos, notes, documents and contacts. All files are stored locally. PassFM has a built-in photo viewer, video player and web browser. It is easy to import, preview, download, search, export files. File Manager: - Safely import your private images, videos, notes, docs to this app. - You can export photo and video to Photos or Files anytime. - Easy to transfer files via WiFi. - Easy to share to the third party App such as Mail, WeChat, Evernote, Dropbox. - Supported image formats: jpg, png, gif, bmp, webp, etc. - Supported video formats: mov, m4v, mp4, mpv, 3gp. - Supported text formats: txt, text, md, markdown, markd, markdn, mdown, mkd, mkdn. - Supported document formats: doc, ppt, xls, docx, pptx, xlsx, key, numbers, pages, pdf, rtf. Private Browser: - Full-featured、InPrivate browser. - No visit history. - Easy to add, manage bookmarks. - Easy to download all the images on the page. - Easy to download web videos, download HLS/M3U8 and convert to MP4. - Save webpage contents into PDF. Private Contact: - Unlimited add contacts. - Add a note to a contact. - Speed dial, send SMS, send e-mail. Private notes: - Markdown syntax highlighting. - Unlimited add notes. About Privacy: Your privacy is important to us. - PassFM app does not copy or store your Photos, Videos, Contacts, Notes, Docs, etc. - Please regularly backup data to your computer or mobile hard drive. - Do not uninstall PassFM app, clear app data or delete files. Otherwise, all your files will be lost forever. Support: Please contact xappbox+passcalc@gmail.com if you need any help.
Screenshots
Verdict
The clearest difference is rating: GeoID at 5.0 against PassFM's 3.7. GeoID also leads on review sentiment (67% vs 48%) and iOS requirement (7.1 vs 14.0). PassFM's advantage is price ($2.99 vs $5.99) and ratings volume (9 vs 3). On update cadence, ads, in-app purchases and monetization model 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
GeoID costs $5.99 and PassFM $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GeoID holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 9 respectively. Written reviews point the same way: 67% of GeoID's written reviews are positive against 48% of PassFM's.
GeoID ships an update every 6 weeks, PassFM every 3 months. The most recent releases landed on October 11, 2026 and October 16, 2026 respectively.
| Parameter | GeoID | PassFM |
|---|---|---|
| Price | $5.99 | $2.99 — better |
| Rating | 5.0 (3 ratings) — better | 3.7 (9 ratings) |
| Positive reviews | 66.7% of reviews — better | 48.3% of reviews |
| Number of ratings | 3 | 9 — better |
| Update frequency | Every 6 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 7.1 — better | 14.0 |
| Further details — not scored | ||
| Size | 6 MB | 29 MB |
| Age rating | 4+ | 17+ |
| Developer | Sang Ho Lee | 刘生 林 |
Customer experience
GeoID
PassFM
In-app purchases
GeoID
No in-app purchases
PassFM
No in-app purchases
