Subnet Mask vs DBF Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Subnet Mask
This app provides a quick way to calculate subnet masks and host addresses. It features a keypad for CIDR notation and allows for manipulation of keys via swipe gestures, functioning like a slider. It can also be used to determine wildcard masks and the number of addresses.
- Subnet mask calculation
- Host address calculation
- CIDR notation keypad
- Swipe key manipulation
- Wildcard mask calculation
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This is the keypad for subnet mask. It has keys of prefix (CIDR notation). The subnet mask and number of host addresses are shown by single tap. Keys are manipulated also by swipe. It behaves like a slider. This App can be mutated to the keypad for wildcard mask. It shows wild card mask and number of addresses.
DBF Viewer
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DBF Viewer is a database workspace for opening, inspecting, searching, and exporting dBASE DBF tables on iPhone, iPad, and Mac. DBF DATABASE VIEWER Open DBF tables directly on your device along with DBT and FPT memo field files. Inspect table structure, view column types, count total records, and browse data rows. DBASE VIEWER: SEARCH AND EDIT Search across all fields, filter records by query, and edit cell contents directly within the table grid. DBF VIEWER 2000: EXCEL AND CSV EXPORT Export DBF tables to Microsoft Excel (.xlsx) or CSV format with a single tap so you can share or analyze your database data in modern spreadsheet applications. DBF FILE VIEWER: PRIVACY AND LOCAL PROCESSING Your files, database tables, and edits stay strictly on your device. No cloud uploads or accounts are required. Privacy Policy: https://rush.tools/privacy Terms of Use: https://rush.tools/terms
Screenshots
Verdict
The clearest difference is ads: DBF Viewer at none against Subnet Mask's shown. DBF Viewer also leads on update cadence (every 6 days vs every 6 months) and device support (4 vs 1). On price 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. Subnet Mask sells 1 one-off in-app purchase and DBF Viewer sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Subnet Mask ships an update every 6 months, DBF Viewer every 6 days. The most recent releases landed on September 28, 2026 and September 22, 2026 respectively.
| Parameter | Subnet Mask | DBF Viewer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (31 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 31 — better | — |
| Update frequency | Every 6 months | Every 6 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Takahiro Furuya | Rush Tools LLC |
In-app purchases
Subnet Mask
- Remove ads$0.99
DBF Viewer
- Weekly Access$6.997 Days
- Annual Access3 Days trial$69.991 Year
Questions
Is Subnet Mask free?
Is DBF Viewer free?
Do Subnet Mask or DBF Viewer have ads?
Which is updated more often, Subnet Mask or DBF Viewer?
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