Comparison

Proofivy vs Causal Loop Diagram

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

Head to head
About

Proofivy

Secure your intellectual property, copyright, and ideas with immutable, timestamped proof. Optionally monetize your creations by minting NFTs or publishing text content behind a stablecoin paywall.

Highlights
  • Irrefutable cryptographic proof of content
  • 100% privacy for your files
  • No crypto wallet required for blockchain verification
  • Optional x402 publishing with USDC earnings
  • Optional NFT minting on Optimism mainnet
  • Blockchain verification for tamper-proof records
Features
Read full description

Secure your IP, copyright, and ideas with irrefutable, timestamped proof. Optionally earn by minting a NFT or publishing your text behind a x402 stablecoin (USDC) paywall. Who it's for: • Creators & Artists: Protect your original work with tamper-proof timestamps that establish your ownership before sharing with the world • Writers & Content Creators: Publish your text content on x402 and earn USDC while maintaining blockchain-verified proof of authorship • Innovators & Entrepreneurs: Secure your ideas with cryptographic proof that can serve as foundation for patents and commercialization • Scientists & Researchers: Document discoveries and experiments with verifiable timestamps that can't be altered or disputed • Photographers: Establish authentic ownership of your images with digital seals Key Features: • Irrefutable Proof: Generate cryptographic Content Identifiers (CIDs) that uniquely represent your digital assets • 100% Privacy: Only fingerprints of your content are shared, your actual files remain private and secure • No Crypto Wallet Required: Commit your content identifiers directly to the blockchain without technical crypto knowledge • Blockchain Verification: Utilize the security of blockchains for permanent, tamper-proof records • Optional x402 Publishing: Publish your text content and earn USDC payments on Base mainnet through the x402 protocol • Optional NFT Minting: For web3 users, convert your commits into tradable NFTs on Optimism mainnet Proofivy is trusted by scientists, writers, artists, and developers worldwide. Proofivy is a member of the Content Authenticity Initiative (CAI), smart contracts are deployed on Optimism mainnet.

About

Causal Loop Diagram

Features
Read full description

"Causal Loop Diagram" is a fast, focused editor for sketching causal loop diagrams (CLDs) on iPhone — a foundational tool of systems thinking. Place variables, draw arrows, set polarities (+/−), and the app automatically detects feedback loops and classifies the whole diagram against well-known systems-thinking archetypes. — Features — ■ Simple drawing • Tap empty area to add a node, then tap source → target to link • Long-press an arrow to add a delay marker (||) • Drag nodes freely; pinch to zoom; one-finger drag on empty area to pan ■ Automatic loop detection • The moment a cycle closes, an R (reinforcing) or B (balancing) badge appears • Each loop is numbered (R1, R2, B1, B2…) so overlapping loops stay distinguishable • Tap a badge to highlight that loop's interior; other loops dim ■ Nine archetypes auto-classified • Reinforcing loop / Balancing loop • Limits to Growth • Fixes that Fail • Shifting the Burden • Escalation • Success to the Successful • Tragedy of the Commons • Growth and Underinvestment ■ Seven curated samples Familiar themes — study, family, sibling rivalry — to learn each archetype by example: • Study Habit (R) • Calibrating to Target Score (B) • Limits to Growth: Fatigue • Shifting the Burden: Escapism • Fixes that Fail: All-nighter • Escalation: Sibling Rivalry • Tragedy of the Commons: Parent's Attention ■ Privacy • No network access at all • No account, no sign-in • No analytics or tracking SDKs • Diagrams stored only in UserDefaults; uninstalling removes everything ■ Other • Japanese / English UI, one-tap switch • Save multiple diagrams locally with custom names • iOS 16+ (iPhone 8 and later) — Who is this for — • Students of systems thinking and system dynamics • Managers and designers who think in structures • Anyone who wants to step back and see the loops in their own habits, relationships, or work • Educators preparing diagram examples on the fly Pairs naturally with Peter Senge's "The Fifth Discipline" and other systems-thinking textbooks — turn the loops in your head into something you can draw and touch in seconds.

Screenshots

Proofivy4 screens
Causal Loop Diagram4 screens

Verdict

The call

The clearest difference is in-app purchases: Causal Loop Diagram at none against Proofivy's 2. Causal Loop Diagram also leads on iOS requirement (16.0 vs 18.0). Proofivy's advantage is device support (3 vs 1). On price, update cadence and ads 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. Proofivy sells 2 one-off in-app purchases. Causal Loop Diagram asks for nothing beyond the download.

UpkeepUpdate frequency

Proofivy ships an update monthly, Causal Loop Diagram every 3 weeks. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 7 level
Proofivy versus Causal Loop Diagram: the parameters behind the verdict, then further details
ParameterProofivyCausal Loop Diagram
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Vision Pro — betteriPhone
Requires iOS18.016.0 — better
Further details — not scored
Size14 MB4 MB
Age rating4+4+
DeveloperCigeza B.V.seiji honda

In-app purchases

2 purchases

Proofivy

One-time2
  • CID Commit$1.99
  • Message Commit$3.99
None

Causal Loop Diagram

No in-app purchases

Questions

Is Proofivy free?
Proofivy is free to download, with in-app purchases available.
Is Causal Loop Diagram free?
Causal Loop Diagram is free to download, with no in-app purchases.
Do Proofivy or Causal Loop Diagram have ads?
Neither Proofivy nor Causal Loop Diagram shows ads.
Which is updated more often, Proofivy or Causal Loop Diagram?
Proofivy ships an update monthly, and Causal Loop Diagram every 3 weeks. Most recently, Proofivy was updated on October 3, 2026 and Causal Loop Diagram on October 10, 2026.

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