Comparison

PotoHEX vs WorldWideWeb

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

Head to head
About

PotoHEX

This tool allows users to inspect and modify any file on their iOS device at the byte and character level. It supports numerous encodings, offers a wide range of checksum and hash calculations, and includes various encryption, compression, and encoding/decoding functionalities.

Highlights
  • Byte and character level inspection/editing
  • Extensive encoding support
  • Checksum and hash calculations
  • Encryption and decryption
  • Compression and decompression
  • Multi-tab interface
  • Undo/Redo functionality
Features
Read full description

The PotoHEX is an application that is used to create, explore and modify arbitrary files on your iOS device. MAIN FEATURES: • Byte and Character level inspecting and editing • Select any from UTF-7/8/16/32/BE/LE or 100+ other encodings for character-level inspecting & editing • Use predefined encoding groups for simplifying the search for an encoding • Search for the desired encoding by name • Quick view of selected bytes/characters directly in the encoding selection table • Replace or Insert bytes and characters • Inspect and modify integer types at the cursor position • Select a byte or text region for the subsequent actions: • Convert text to another encoding. • Сalculate checksums: Adler-32, BSD checksum, CRC-8, CRC-16, CRC-32, CRC-64, CRC-8/CDMA2000, CRC-8/DARC, CRC-8/DVB-S2, CRC-8/EBU, CRC-8/I-CODE, CRC-8/ITU, CRC-8/MAXIM, CRC-8/ROHC, CRC-8/WCDMA, CRC-16/CCITT_FALSE, CRC-16/AUG_CCITT, CRC-16/BUYPASS, CRC-16/CDMA2000, CRC-16/DDS-110, CRC-16/DECT-R, CRC-16/DECT-X, CRC-16/DNP, CRC-16/EN-13757, CRC-16/GENIBUS, CRC-16/MAXIM, CRC-16/MCRF4XX, CRC-16/RIELLO, CRC-16/T10-DIF, CRC-16/TELEDISK, CRC-16/TMS37157, CRC-16/USB, CRC-A, CRC-16/KERMIT, CRC-16/MODBUS, CRC-16/X-25, CRC-16/XMODEM, CRC-32/BZIP2, CRC-32C, CRC-32D, CRC-32/MPEG-2, CRC-32/POSIX, CRC-32Q, CRC-32/JAMCRC, CRC-32/XFER, CRC-64/WE, and CRC-64/XZ. • Сalculate hashes: BLAKE/BLAKE2, MD2, MD4, MD5, MD6, SHA1, SHA2 (SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/256, SHA-512/224), SHA3-224, SHA3-256, SHA3-384, SHA3-512, SHAKE128, SHAKE256, RIPEMD-128/160/256/320, Tiger/Tiger2, Whirlpool and STREEBOG (Стрибог, ГОСТ 34.11-2018) • Encode or Decode from or to Base16, Base32(RFC 4648, hex, Crockford's, and z-base-32 alphabets), Base58(BITCOIN, RIPPLE, FLICKR, and GMP alphabets), Base64, Ascii85, and Z85(ZeroMQ) encodings • Encrypt or Decrypt using AES 128/192/256, BLOWFISH, DES, 3DES, RC2, and RC4 algorithms • Compress or Extract by Deflate/Inflate, BZIP2, and LZMA/LZMA2 algorithms. • Export the selected region as a QR code. • Fill the region with a given multibyte pattern • Cut the region • Copy and Paste the region • Undo/Redo • Clone or delete files INTERFACE • Multi-tab interface • Tabs can be reordered or removed by long pressing on them and dragging • Change the width of an arbitrary column in the file data table • Jump to arbitrary file offset by tapping on the Offset column • Choose from Decimal or Hexadecimal formats for the file offset values by tapping on the Offset column header • The space occupied by the file data table and the property sheet (or their relative arrangement) can be tuned by dragging (or double-tapping) the delimiter handle between them • Zoom in/out almost every part of the user interface • Light and Dark themes depending on the device settings AUXILIARY • File renaming • Change the size of the file • Select the number of bytes in a row • Find & replace an arbitrary text or byte fragment with an arbitrary text or byte fragment • Access the App's Document folder through a Web Browser LIMITATIONS • Undo/Redo works for modifications up to 16Mb This app by default has restrictions on file content visibility. The visible content of any file is restricted by the first 256 bytes. To remove those restrictions you can start a monthly auto-renewable subscription or buy permanent full access. Privacy Policy: https://apotocki.github.io/potohex/privacy.pdf Terms of Use: https://apotocki.github.io/potohex/terms-of-use.pdf

About

WorldWideWeb

This mobile web server tool allows developers to test and serve HTML documents directly from their device. It simulates web environments, enabling offline development and API testing without external dependencies. Ideal for quick checks and development on the go.

Highlights
  • Automatic refresh on file changes
  • No caching for direct testing
  • Easy folder configuration
  • Directory listings for file access
  • Bonjour support for local network access
  • REST API mocking
  • Standalone with no external dependencies
  • Built-in sandbox security
Features
Read full description

This app’s name is an homage to the world’s first web server. Back in 1989, Tim Berners-Lee started the web on his NeXT computer. On that computer was an app named WorldWideWeb. This app was unique because it allowed his machine to edit and serve HTML documents. The app also used coding frameworks that were adopted by Apple after purchasing NeXT: they are being used right now to display what you’re reading. Like that original app, this WorldWideWeb is a handy web development tool. It’s designed for people who need to test things on their iPad or iPhone before moving the files onto a real web server like Apache or nginx. It also allows you to work in those increasingly rare moments where you don’t have a connection to the Internet. App developers can use this server to simulate and test APIs that their product uses. FEATURES WorldWideWeb does things differently than today’s production web servers: • Automatic refresh — Watches your site and reloads browser when there are changes • No caching — Every request gets a new response, no cache busters needed • Easy to configure — Pick a folder and go • Directory listings — A handy list of files whenever you hit a URL that doesn’t exist • Bonjour support – Automatic DNS for easy access using devices on your local network • REST support — Set default responses as JSON or XML for easy mocking of APIs • No external dependencies — Completely standalone and doesn’t need other tools like Python or Ruby • Built-in security — Runs completely in a sandbox, no access to data unless you allow it • Powerful and lightweight – A small memory footprint with minimal CPU overhead • No rocket science — Perfect for clients and other folks who are less technically inclined

Screenshots

PotoHEX4 screens
WorldWideWeb4 screens

Verdict

The call

The clearest difference is review sentiment: WorldWideWeb at 76% against PotoHEX's 33%. WorldWideWeb also leads on rating (4.5 vs 3.6) and monetization model (free vs free with in-app purchases). PotoHEX's advantage is update cadence (every 2 weeks vs every 4 months). On price, ratings volume, ads and in-app purchases 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. PotoHEX sells 2 in-app purchases, starting at $0.99 per month and WorldWideWeb sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

WorldWideWeb holds the better App Store score, 4.5 against 3.6. Both are backed by a comparable volume of ratings — 17 and 40 respectively. Written reviews point the same way: 33% of PotoHEX's written reviews are positive against 76% of WorldWideWeb's.

UpkeepUpdate frequency

PotoHEX ships an update every 2 weeks, WorldWideWeb every 4 months. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

Scorecard4 real differences · 6 level
PotoHEX versus WorldWideWeb: the parameters behind the verdict, then further details
ParameterPotoHEXWorldWideWeb
PriceFreeFree
Rating3.6 (17 ratings)4.5 (40 ratings) — better
Positive reviews33.3% of reviews76.5% of reviews — better
Number of ratings1740 — better
Update frequencyEvery 2 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size20 MB4 MB
Age rating4+17+
DeveloperAlexander PototskiyThe Iconfactory

Customer experience

PotoHEX

All ratings16 ratings
Positive56.3%
Neutral6.3%
Negative37.5%
Written reviews21 reviews
Positive33.3%
Neutral14.3%
Negative52.4%

WorldWideWeb

All ratings39 ratings
Positive89.7%
Neutral5.1%
Negative5.1%
Written reviews17 reviews
Positive76.5%
Neutral11.8%
Negative11.8%

In-app purchases

2 purchases

PotoHEX

Subscriptions1
  • Monthly$0.991 Month
One-time1
  • Permanent$9.99
1 purchases

WorldWideWeb

One-time1
  • WorldWideWeb PRO$9.99

Questions

Is PotoHEX free?
PotoHEX is free to download, with in-app purchases available.
Is WorldWideWeb free?
WorldWideWeb is free to download, with in-app purchases available.
Which has better reviews, PotoHEX or WorldWideWeb?
WorldWideWeb is rated higher. PotoHEX averages 3.6 out of 5 from 17 ratings, while WorldWideWeb averages 4.5 from 40 ratings.
Do PotoHEX or WorldWideWeb have ads?
Neither PotoHEX nor WorldWideWeb shows ads.
Which is updated more often, PotoHEX or WorldWideWeb?
PotoHEX ships an update every 2 weeks, and WorldWideWeb every 4 months. Most recently, PotoHEX was updated on October 23, 2026 and WorldWideWeb on October 21, 2026.

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