Proofmode vs Certyclick
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Proofmode
This app provides a secure way to authenticate and verify multimedia content from the moment it's captured. It uses advanced technology to ensure the chain of custody and provide proof of authenticity for both activists and everyday users.
- Multimedia content authentication
- Verification from point of capture
- Enhanced sensor-driven metadata
- Hardware fingerprinting
- Cryptographic signing
- Supports C2PA standard
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Proofmode is a system that enables authentication and verification of multimedia content, particularly captured on a smartphone, from point of capture at the source to viewing by a recipient. It utilizes enhanced sensor-driven metadata, hardware fingerprinting, cryptographic signing, and third-party notaries to enable a pseudonymous, decentralized approach to the need for chain-of-custody and “proof” by both activists and everyday people alike. ProofMode is currently available as specifications, developer libraries and applications. We seek to expand its support for notarization and sharing of proof through decentralized storage technology. We believe in a future, where every camera will have a “Proof Mode” that can be enabled and every viewer an ability to trust what they are seeing. ProofMode supports the Coalition for Content Provenance and Authentication (C2PA) standard, Content Credentials and the Content Authenticity Initiative.
Certyclick
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Certyclick is an app that allows taking photos or recording videos and registering them permanently on the blockchain. Date, place, time and the hash of the transaction are associated with the produced file and permanently imprinted on the blockchain. Subsequently, a PDF containing these metadata is generated by the app and sent by email. Thanks to their immutability, the data can be used in court as certain evidence
Screenshots
Verdict
The clearest difference is update cadence: Certyclick at every 2 months against Proofmode's every 3 months. Certyclick also leads on iOS requirement (13.0 vs 16). On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Proofmode ships an update every 3 months, Certyclick every 2 months. The most recent releases landed on September 18, 2026 and October 1, 2026 respectively.
| Parameter | Proofmode | Certyclick |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (4 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 16 | 13.0 — better |
| Further details — not scored | ||
| Size | 36 MB | 26 MB |
| Age rating | 4+ | 4+ |
| Developer | Postmodern Apps LLC | Certyclick |
In-app purchases
Proofmode
No in-app purchases
Certyclick
No in-app purchases
