Comparison

ID vs Math Shield

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

Head to head
About

ID

Features
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IDShield keeps your identity documents secure and gives you full control over how they're shared. Snap a photo of your passport, ID card, or driving license, then add a visible watermark before sending it to anyone - so your documents can never be misused. Hand over a copy of your passport or ID, and you lose control. Where does it end up? Who else sees it? Can you prove a leak came from a specific recipient? ID-Shield gives that control back. Watermark, redact, and trace every copy of your identity documents β€” all on-device, with no cloud, no account, no tracking. WATERMARK EVERY COPY Stamp each shared file with a purpose ("Apartment Application β€” Berlin"), the recipient's name, and the date. Choose a subtle single-line stamp or a full-splash overlay, in any color. If a copy ever surfaces somewhere it shouldn't, the watermark tells you exactly which copy leaked. REDACT IN SECONDS Black out social security numbers, birth dates, addresses, signatures β€” anything you don't want shared. Drag your own redaction boxes, or let Smart Redact suggest sensitive fields automatically. Tap once to blur faces. Pinch to zoom for pixel-perfect work. SCAN OR IMPORT Capture documents straight from your camera, or import from Photos and Files. Multi-page scans supported. Everything is locked behind Face ID, Touch ID, or your device passcode. SHARE THE NATIVE WAY Export as PDF or image, then send through the standard iOS / iPadOS / macOS share sheet β€” Mail, Messages, AirDrop, WhatsApp, any app you already use. No proprietary cloud, no lock-in. AUDIT TRAIL Every share is logged: what was sent, to whom, for what purpose, when. Look back any time. If something goes wrong, you have a record. PRIVACY BY DESIGN 100% on-device processing β€” nothing leaves your phone unless you send it Zero analytics, zero tracking, zero third-party SDKs No account required Optional iCloud sync uses Apple's end-to-end encrypted CloudKit NATIVE ON EVERY APPLE DEVICE Built fresh in SwiftUI for iPhone, iPad, and Mac. Each platform gets a layout that feels native β€” not a port. Vision-powered text detection, Face ID unlock, system share sheet. WHO USES ID-SHIELD Renters and apartment hunters submitting ID copies Job applicants sharing documents with HR or recruiters Anyone verifying identity online or by mail Privacy-conscious professionals Parents managing family documents Your most sensitive documents deserve more than an unprotected PDF. Every copy watermarked. Every share recorded. Every byte stays where you put it β€” on your device. Download ID-Shield and take back control of your identity documents. PRIVACY FIRST All data stored on your device by default No accounts, no servers, no tracking iCloud sync is optional and controlled by you

About

Math Shield

Features
Read full description

Stay Focused with Math Shield Math Shield helps you reduce distractions and build better focus habits by placing a math challenge between you and your most distracting apps. Instead of mindlessly opening social media, games, or other time-wasting apps, you'll need to solve a math problem before gaining temporary access. This simple barrier helps break automatic habits and encourages intentional screen time. Key Features Block Distracting Apps: Choose the apps you want to limit and keep them locked during focus sessions. Unlock with Math Challenges: Solve math problems before accessing blocked apps. Temporary App Access: Gain limited access after successfully completing a challenge. Stay Productive: Create friction between impulses and distractions to help maintain focus. Easy Setup: Select apps, choose your preferences, and let Math Shield help you stay on track. Perfect For - Students who want to focus on studying - Professionals who need distraction-free work sessions - Anyone looking to reduce screen time - People building healthier digital habits Whether you're studying, working, reading, or spending time with family, Math Shield helps you take control of your attentionβ€”one challenge at a time. Download Math Shield and make every app unlock a conscious decision. To enjoy the full experience and to gain all the premium features, you can always purchase our Monthly, Yearly or Lifetime premium subscription pack. Math Shield will automatically charge your iTunes Account at the end of your subscription unless auto-renew is turned off at least 24 hours before the end of your current period. Subscriptions renew at the original price. You can turn off auto-renew at any time and still receive full functionality until the end of your current period, but no refund can be provided for unused portions of the subscription. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. All your previous purchases can be easily restored using the **Restore Purchase** option in the app. This will provide you access to all the premium features. You can view Math Shield Terms of Use & Privacy Policy. Terms of Use (EULA):Β  https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://github.com/vinothvino42/app-privacy-policy/blob/main/math-shield.md

Screenshots

ID4 screens
Math Shield4 screens

Verdict

The call

The clearest difference is update cadence: Math Shield at every 2 days against ID's every 2 weeks. ID's advantage is iOS requirement (17.0 vs 26.0). On price, ads, 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. ID sells 1 one-off in-app purchase and Math Shield sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ID ships an update every 2 weeks, Math Shield every 2 days. The most recent releases landed on September 13, 2026 and September 20, 2026 respectively.

Scorecard2 real differences Β· 4 level
ID versus Math Shield: the parameters behind the verdict, then further details
ParameterIDMath Shield
PriceFreeFree
Update frequencyEvery 2 weeksEvery 2 days β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad β€” betteriPhone
Requires iOS17.0 β€” better26.0
Further details β€” not scored
Size2 MB20 MB
Age rating4+4+
DeveloperKanchalika KongyongVinoth Ramajeyam

In-app purchases

1 purchases

ID

One-time1
  • ID-Shield$9.99
3 purchases

Math Shield

Subscriptions2
  • Math Shield Pro Monthly$3.991 Month
  • Math Shield Pro Yearly3 Days trial$12.991 Year
One-time1
  • Math Shield Pro - Lifetime$19.99

Questions

Is ID free?
ID is free to download, with in-app purchases available.
Is Math Shield free?
Math Shield is free to download, with in-app purchases available.
Do ID or Math Shield have ads?
Neither ID nor Math Shield shows ads.
Which is updated more often, ID or Math Shield?
ID ships an update every 2 weeks, and Math Shield every 2 days. Most recently, ID was updated on September 13, 2026 and Math Shield on September 20, 2026.

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