MyNumberBlocker vs Plain Units
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MyNumberBlocker
Block unwanted calls from numbers that share the same prefix as your own. This utility prevents telemarketers from spoofing caller IDs to trick you into answering. It ensures your contacts are not blocked and your call logs remain private.
- Block calls by phone number prefix
- Prevents caller ID spoofing
- Excludes contacts from blocking
- Sends blocked calls to voicemail
- Does not send contacts to server
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Stop unwanted phone calls! Have you started getting spam calls from phone numbers that resemble yours? If so, then MyNumberBlocker is for you! Simply enter your phone number and MyNumberBlocker blocks all numbers that have the same prefix as your phone number. Telemarketers use every game in the book to get you to answer your phone. This latest one is to trick you into believing that a friend or someone near you is calling you by spoofing the caller ID. There is currently no other way to stop these calls. Notes: • MyNumberBlocker requests access to your Contacts so that it doesn’t blocks contacts with the same phone number prefix. • MyNumberBlocker does NOT send your Contacts to a server nor communicates in a server in any way. • MyNumberBlocker cannot log your calls. • Blocked calls are sent directly to voicemail.
Plain Units
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Simple Unit Converter is a calm, numeric-first converter that gets out of your way. Pick a category, type into any field, and every other unit on the page updates instantly. No account, no sign-in, no clutter. 14 CATEGORIES • Length • Mass • Temperature • Time • Speed • Area • Volume • Digital Storage • Data Transfer Rate • Energy • Frequency • Fuel Economy • Plane Angle • Pressure WHY YOU'LL LIKE IT • Type into any unit, not just a "from" box. Every other unit converts as you type. • All units in a category are visible at once, so you never dig through pickers. • Searchable category grid to jump straight to what you need. • Tap a result to copy a clean, paste-ready value. • Remembers your last category, unit, and value between launches. • Light and dark mode, and works on iPhone and iPad. • Everything runs on your device. No servers, no analytics, no tracking of your conversions. REMOVE ADS The free version shows ads. A one-time purchase removes them forever and restores on all your devices signed in to the same Apple Account.
Screenshots
Verdict
The clearest difference is in-app purchases: MyNumberBlocker at none against Plain Units's 1. MyNumberBlocker also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.4). Plain Units's advantage is update cadence (every 3 weeks vs every 38 months). On price 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
Both are free to download. Plain Units sells 1 one-off in-app purchase. MyNumberBlocker asks for nothing beyond the download.
MyNumberBlocker ships an update every 38 months, Plain Units every 3 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | MyNumberBlocker | Plain Units |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (2 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 38 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 2 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Gruby Solutions | Nicolaus Lawson |
In-app purchases
MyNumberBlocker
No in-app purchases
Plain Units
- Remove Ads$3.99









