Comparison

Shield vs Plain Units

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Shield

Features
Read full description

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 evolvingβ€”Shield 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/

About

Plain Units

Features
Read full description

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

Shield4 screens
Plain Units4 screens

Verdict

The call

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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.

UpkeepUpdate frequency

Shield ships an update weekly, Plain Units every 3 weeks. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Β· 3 level
Shield versus Plain Units: the parameters behind the verdict, then further details
ParameterShieldPlain Units
PriceFreeFree
Update frequencyWeekly β€” betterEvery 3 weeks
AdsNo β€” betterYes
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.516.4 β€” better
Further details β€” not scored
Size13 MB48 MB
Age rating4+4+
DeveloperAlexandr KorsakNicolaus Lawson

In-app purchases

2 purchases

Shield

Subscriptions2
  • Monthly$5.991 Month
  • Yearly3 Days trial$39.991 Year
1 purchases

Plain Units

One-time1
  • Remove Ads$3.99

Questions

Is Shield free?
Shield is free to download, with in-app purchases available.
Is Plain Units free?
Plain Units is free to download, with in-app purchases available.
Do Shield or Plain Units have ads?
Plain Units shows ads; Shield does not.
Which is updated more often, Shield or Plain Units?
Shield ships an update weekly, and Plain Units every 3 weeks. Most recently, Shield was updated on November 9, 2026 and Plain Units on October 31, 2026.

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