Comparison

Protractor vs Private Scan Vault

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

Head to head
About

Protractor

Measure angles precisely using your phone's screen or camera. This intuitive tool allows you to adjust measurement lines and instantly see the angular difference. Ideal for professionals and hobbyists needing quick, accurate angle calculations.

Highlights
  • Angle measurement with adjustable lines
  • Camera integration for real-world measurements
  • Freeze function for static measurements
  • Clean and modern user interface
Features
Read full description

Screen Protractor is the precise, easy-to-use angle measurement tool that turns your iPhone into a digital protractor. Move two measurement lines anywhere on screen and instantly read the exact angle between them — down to the degree. MEASURE ANGLES ON ANY SURFACE Enable the built-in camera to use your live feed as a background. Hold your phone up to any object, surface, or corner and measure angles in real time without printing anything out or carrying a physical protractor. FREEZE & MEASURE Pause the camera image with the freeze function and take your time getting a precise angle reading on a still frame — perfect for moving objects or awkward angles. KEY FEATURES • Precision angle measurement between two draggable lines • Live camera background for measuring real-world angles • Freeze frame for accurate measurements on still images • Pan and zoom the measurement scale for fine-tuned readings • Clean, distraction-free interface PERFECT FOR Carpenters, builders, engineers, architects, designers, students, and anyone who needs a quick angle, slope, or degree measurement on the go. No registration. No ads. Just a reliable digital protractor in your pocket.

About

Private Scan Vault

Features
Read full description

Private Scan Vault is a private document vault built for people who take their privacy seriously. Scan receipts, contracts, IDs, medical records, and any important paper — then lock them away with military-grade encryption, right on your device. 100% offline. No account required. No cloud sync. No tracking. Your documents never leave your iPhone. SCAN & IMPORT • Scan multi-page documents with your camera • Import PDFs, JPG, PNG, and HEIC files from anywhere • Automatic edge detection and image enhancement • Up to 50 pages per document PRIVACY & SECURITY • AES-256 encryption — every file is encrypted at rest • Face ID / Touch ID lock with configurable auto-lock • Zero-knowledge design — no server, no account, no sync • Files excluded from iCloud backup by default ORGANIZE • Custom folders: Receipts, Contracts, IDs, Medical, and more • Hashtag your documents for instant filtering • Grid and list view • Drag-and-drop between folders BACKUP & RESTORE • Password-protected encrypted backups (.svbackup) • Restore to any device — no account needed • Your backup key is yours alone SCANVAULT PRO — $8.99/MONTH • Unlimited document scanning • OCR text extraction — pull text from any scanned page • Full-text search across all your documents • Unlimited custom folders • Cancel anytime Free tier includes 5 scans per month and the full security model — encryption, biometric lock, and backup are always free. BUILT DIFFERENT Most document apps store your files on their servers. ScanVault stores everything locally, encrypted with a key only your device holds. There is no "forgot password" — because there is no server to ask. Perfect for storing: • Passports and government IDs • Insurance and medical records • Lease agreements and contracts • Tax documents and receipts • Warranties and invoices • Anything you wouldn't want in the cloud Payment is charged to your Apple ID. Subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple ID settings. Privacy Policy: https://namtran1985vn.github.io/scanvault-site/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Protractor4 screens
Private Scan Vault4 screens

Verdict

The call

The clearest difference is in-app purchases: Protractor at none against Private Scan Vault's 1. Private Scan Vault's advantage is ads (none vs shown). On price, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Private Scan Vault sells 1 in-app purchase, starting at $8.99 per month. Protractor asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Protractor versus Private Scan Vault: the parameters behind the verdict, then further details
ParameterProtractorPrivate Scan Vault
PriceFreeFree
Rating3.9 (14 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings14 — better—
Update frequencyEvery 9 days—
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.6 — better17.0
Further details — not scored
Size33 MB3 MB
Age rating4+4+
DeveloperJens RieckhofNam Tran

In-app purchases

None

Protractor

No in-app purchases

1 purchases

Private Scan Vault

Subscriptions1
  • Private Scan Vault Pro$8.991 Month

Questions

Is Protractor free?
Protractor is free to download, with no in-app purchases.
Is Private Scan Vault free?
Private Scan Vault is free to download, with in-app purchases available.
Do Protractor or Private Scan Vault have ads?
Protractor shows ads; Private Scan Vault does not.

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