Acidity vs EMVDecoder Toolkit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Access archived page versions
- Toolbar action for quick access
- Regex matching for automatic navigation
- Safari extension
Read full descriptionHide 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.
EMVDecoder Toolkit
Read full descriptionHide 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
Verdict
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
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.
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.
| Parameter | Acidity | EMVDecoder Toolkit |
|---|---|---|
| Price | Free — better | $7.99 |
| Rating | 4.2 (10 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 4 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 8 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Octalwise | bzhar badawy |
In-app purchases
Acidity
No in-app purchases
EMVDecoder Toolkit
No in-app purchases
Questions
Is Acidity free?
Is EMVDecoder Toolkit free?
Do Acidity or EMVDecoder Toolkit have ads?
Which is updated more often, Acidity or EMVDecoder Toolkit?
Other comparisons















