Shield vs Plain Units
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Shield
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Shield protects you from scam, phishing, and fraudulent text messages using advanced AI. Dangerous messages are detected and blocked automatically, keeping your inbox clean and your personal information safe. Please Note: To provide this level of real-time security, a paid subscription is required to enable the AI filtering engine. This ensures you receive constant, up-to-date protection against the latest threats. No complicated setup or manual rules. Shield works quietly in the background to stop scam texts instantly, helping you avoid costly mistakes and unwanted stress. Built with privacy in mind, Shield focuses on protection without selling or misusing your data. Scammers keep evolvingβShield stays one step ahead. Download Shield and subscribe to take control of your messages today. Privacy policy: https://balconygames.com/privacy.html Terms of use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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 β’ Length β’ Mass β’ Temperature β’ Time β’ Speed β’ Area β’ Volume β’ Digital Storage β’ Data Transfer Rate β’ Energy β’ Frequency β’ Fuel Economy β’ Plane Angle β’ Pressure WHY YOU'LL LIKE IT β’ Type into any unit, not just a "from" box. Every other unit converts as you type. β’ All units in a category are visible at once, so you never dig through pickers. β’ Searchable category grid to jump straight to what you need. β’ Tap a result to copy a clean, paste-ready value. β’ Remembers your last category, unit, and value between launches. β’ Light and dark mode, and works on iPhone and iPad. β’ 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 ads: Shield at none against Plain Units's shown. Shield also leads on update cadence (weekly vs every 3 weeks). Plain Units's advantage is iOS requirement (16.4 vs 18.5). On price, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Shield sells 2 in-app purchases, starting at $5.99 per month and Plain Units sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Shield ships an update weekly, Plain Units every 3 weeks. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.
| Parameter | Shield | Plain Units |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly β better | Every 3 weeks |
| Ads | No β better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.5 | 16.4 β better |
| Further details β not scored | ||
| Size | 13 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Alexandr Korsak | Nicolaus Lawson |
In-app purchases
Shield
- Monthly$5.991 Month
- Yearly3 Days trial$39.991 Year
Plain Units
- Remove Ads$3.99









