Comparison

BioSeal® Reader vs HashDoc

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

Head to head
About

BioSeal® Reader

Features
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BioSeal Reader is a universal application for reading and validating Visible Digital Seals (VDS) compliant with the requirements of Otentik trust network. The application allows users to verify 2D barcodes (Datamatric and QR Code) meeting ISO 22376 standard, Otentik network extensions and BioSeal extensions. It is also compatible with 2D-Doc, the previous generation of VDS. The code encapsulates key data from a document according to the associated use case. These are electronically signed, allowing the BioSeal Reader to detect any tampering, confirm the authenticity of the data and the legitimacy of the issuer. The application displays the encoded information in a readable format, using one of the languages defined by the use case. Verifying a BioSeal is as easy and natural as taking a picture. Just scan the barcode and instantly verify that the product or document is authentic and issued by a legitimate entity. The output is consistent across all devices to increase confidence. When biometric verification is required, the app can also take a picture of the holder to check his/her legitimacy. BioSeal Reader is 100% compliant with the European General Data Protection Rules (GDPR). It is non-intrusive and keeps no trace of your data or browsing. To know more about BioSeal, please visit our website here: https://bioseal.codes.

About

HashDoc

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Tamper-proof auditable evidence for your documents. Choose a file, and HashDoc creates a cryptographic hash on your device, seals that hash on the blockchain, and generates a proof you can store, share, and verify later. Your original files stay on your device and private at all times. Use HashDoc to: Create proof for documents, deeds, audits, code, photos, and video Generate a shareable proof PDF Verify whether a file still matches its original seal Add optional account-backed attribution Keep control of your files with local-first handling and full privacy HashDoc is built for auditors, creators, IP professionals, compliance teams and individuals who need a clear integrity trail for the files that matter most. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula Terms of Use: https://www.proofstack.eu/iosapptermsofuse/ Privacy Policy: https://www.proofstack.eu/iosappprivacypolicy/ Disclaimer: https://www.proofstack.eu/iosappdisclaimer/ FAQ Evidentiary use: https://www.proofstack.eu/iosappfaq/

Screenshots

BioSeal® Reader4 screens
HashDoc4 screens

Verdict

The call

The clearest difference is in-app purchases: BioSeal® Reader at none against HashDoc's 3. BioSeal® Reader also leads on iOS requirement (14.0 vs 26.0). HashDoc's advantage is update cadence (every 2 weeks vs every 5 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. HashDoc sells 3 in-app purchases, starting at $3.99 per month. BioSeal® Reader asks for nothing beyond the download.

UpkeepUpdate frequency

BioSeal® Reader ships an update every 5 weeks, HashDoc every 2 weeks. Both last shipped on September 9, 2026.

Scorecard3 real differences · 3 level
BioSeal® Reader versus HashDoc: the parameters behind the verdict, then further details
ParameterBioSeal® ReaderHashDoc
PriceFreeFree
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better26.0
Further details — not scored
Size135 MB10 MB
Age rating4+17+
Developerid3 TechnologiesImpact Makers (Apps)

In-app purchases

None

BioSeal® Reader

No in-app purchases

3 purchases

HashDoc

Subscriptions3
  • Basic$3.991 Month
  • Premium$11.991 Month
  • Pro$69.991 Month

Questions

Is BioSeal® Reader free?
BioSeal® Reader is free to download, with no in-app purchases.
Is HashDoc free?
HashDoc is free to download, with in-app purchases available.
Do BioSeal® Reader or HashDoc have ads?
Neither BioSeal® Reader nor HashDoc shows ads.
Which is updated more often, BioSeal® Reader or HashDoc?
BioSeal® Reader ships an update every 5 weeks, and HashDoc every 2 weeks. Most recently, BioSeal® Reader was updated on September 9, 2026 and HashDoc on September 9, 2026.

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