Comparison

Acidity vs EMVDecoder Toolkit

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

Head to head
About

Acidity

This utility extension for Safari provides quick access to archived versions of web pages. It allows users to manually navigate to archives or set up automatic redirection based on custom regex patterns.

Highlights
  • Access archived page versions
  • Toolbar action for quick access
  • Regex matching for automatic navigation
  • Safari extension
Features
Read full description

Acidity is a Safari extension for navigating to archived versions of pages. Quickly access page archives through a button in the toolbar. Specify regex matches to automatically redirect certain sites to archives.

About

EMVDecoder Toolkit

Features
Read full description

EMVDecoder Toolkit is your all-in-one solution for payment card industry professionals, engineers, testers, and auditors. This app provides a comprehensive suite of tools for cryptography, card security, EMV, ISO 8583, and more—right from your mobile device. Key Features: - Cryptography Tools: DES/3DES, AES, SHA, and HMAC calculators for secure encryption, decryption, and hashing. - Card Security: Generate and validate CVV, CVV2, CVC, and CAVV codes. Validate card numbers and check digits using the Luhn algorithm. - PIN Tools: Calculate PIN blocks (ISO 9564, VISA, IBM 3624), PVV, PIN offsets, and perform PIN extraction and brute force analysis. Simulate HSM PIN operations. - EMV & TLV: Parse TLV data and decode EMV tags for in-depth card data analysis. - ISO 8583: Build and analyze bitmaps, parse and validate ISO 8583 messages, and work with TR-31 key blocks. - Key Tools: Calculate KCV, split and share keys using Shamir’s Secret Sharing, and simulate HSM key operations. - Luhn Tools: Validate PANs, calculate check digits, and generate test card numbers. - Converters: Convert between ASCII, Hex, Binary, and various date/time formats. - Field Decoders: Analyze POS data and decode entry mode fields. the tool is useful for Payment system engineers, QA testers, security auditors, fintech developers, and anyone working with payment cards, POS, or transaction systems.

Screenshots

Acidity2 screens
EMVDecoder Toolkit4 screens

Verdict

The call

The clearest difference is price: Acidity at Free against EMVDecoder Toolkit's $7.99. Acidity also leads on update cadence (every 4 months vs every 8 months). On ads, in-app purchases, 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

Acidity is free to download; EMVDecoder Toolkit costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Acidity ships an update every 4 months, EMVDecoder Toolkit every 8 months. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

Scorecard2 real differences · 8 level
Acidity versus EMVDecoder Toolkit: the parameters behind the verdict, then further details
ParameterAcidityEMVDecoder Toolkit
PriceFree — better$7.99
Rating4.2 (10 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings10 — better—
Update frequencyEvery 4 months — betterEvery 8 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size8 MB27 MB
Age rating4+4+
DeveloperOctalwisebzhar badawy

In-app purchases

None

Acidity

No in-app purchases

None

EMVDecoder Toolkit

No in-app purchases

Questions

Is Acidity free?
Acidity is free to download, with no in-app purchases.
Is EMVDecoder Toolkit free?
EMVDecoder Toolkit costs $7.99, with no in-app purchases.
Do Acidity or EMVDecoder Toolkit have ads?
Neither Acidity nor EMVDecoder Toolkit shows ads.
Which is updated more often, Acidity or EMVDecoder Toolkit?
Acidity ships an update every 4 months, and EMVDecoder Toolkit every 8 months. Most recently, Acidity was updated on October 8, 2026 and EMVDecoder Toolkit on October 12, 2026.

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