Comparison

SafeUSB Pro vs Proof

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

Head to head
About

SafeUSB Pro

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SafeUSB Pro is an iOS file management tool designed specifically for its compatible USB flash drive. Core Features Security Protection: When used with the dedicated USB flash drive, password verification is required to access data, ensuring your data security. Intelligent Categorization and Management: Automatically identifies file types such as documents, images, videos, and audio files, eliminating cluttered folders and making searching more efficient. One-Stop File Operations: Supports common functions such as browsing, copying, moving, deleting, renaming, and sharing, easily managing all content on the USB flash drive. Offline Use: No internet connection required; all operations are completed locally, eliminating the privacy risks associated with cloud transfers.

About

Proof

Create tamper-evident, timestamped records of important events. Capture photos or videos with notes, and the app seals them with a cryptographic hash, making alterations virtually impossible. Generate verifiable PDF reports and share them securely.

Highlights
  • Tamper-evident timestamped records
  • Cryptographic hashing for integrity
  • Photo and video documentation
  • GPS location and notes
  • Verifiable PDF export
  • Secure sharing options
  • Acknowledgment requests
Features
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If it happened, prove it. Proof creates tamper-evident, timestamped records of anything you need to document. Take a photo or video, add notes, and Proof seals it with a cryptographic hash — a unique digital fingerprint that makes it virtually impossible to alter the record after the fact. Whether you're photographing an apartment before moving in, documenting a car accident, recording an agreement, or tracking the condition of something you're lending — Proof gives you a credible, shareable record with a verifiable timestamp. What makes Proof different Every proof is sealed with a SHA-256 cryptographic hash computed from your photos, videos, timestamp, GPS location, and notes. If any detail changes after sealing, the hash won't match — making tampering obvious. A hash chain links each proof to the one before it, creating a lightweight audit trail across your entire vault. Built for real situations • Move-in and move-out apartment photos • Car accident and property damage documentation • Item condition records before and after lending • Agreements and acknowledgment tracking • Workplace incident reports • Online marketplace sales and shipping evidence • Generate a professional PDF export containing your photos, full metadata, GPS location, cryptographic hash, and a QR code for easy verification. • Share via AirDrop, text, or email. • Request acknowledgment — recipients can confirm receipt via a secure link, and you'll receive a push notification when they do. Your data stays on your device No account required. No cloud sync. No tracking. Everything lives on your device unless you explicitly choose to share it.

Screenshots

SafeUSB Pro4 screens
Proof4 screens

Verdict

The call

The clearest difference is in-app purchases: SafeUSB Pro at none against Proof's 2. SafeUSB Pro also leads on iOS requirement (15.0 vs 17.0). Proof's advantage is update cadence (every 3 days vs every 2 weeks). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Proof sells 2 one-off in-app purchases. SafeUSB Pro asks for nothing beyond the download.

UpkeepUpdate frequency

SafeUSB Pro ships an update every 2 weeks, Proof every 3 days. The most recent releases landed on September 24, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 7 level
SafeUSB Pro versus Proof: the parameters behind the verdict, then further details
ParameterSafeUSB ProProof
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 2 weeksEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size20 MB3 MB
Age rating4+4+
DeveloperShenzhen Cheng'an Innovation Technology Co., Ltd.James Cuadros

In-app purchases

None

SafeUSB Pro

No in-app purchases

2 purchases

Proof

One-time2
  • Proof Plus$2.99
  • Proof Pro$7.99

Questions

Is SafeUSB Pro free?
SafeUSB Pro is free to download, with no in-app purchases.
Is Proof free?
Proof is free to download, with in-app purchases available.
Do SafeUSB Pro or Proof have ads?
Neither SafeUSB Pro nor Proof shows ads.
Which is updated more often, SafeUSB Pro or Proof?
SafeUSB Pro ships an update every 2 weeks, and Proof every 3 days. Most recently, SafeUSB Pro was updated on September 24, 2026 and Proof on October 15, 2026.

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