Mnemonizer vs withAppData
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mnemonizer
This app offers a unique method to secure sensitive information like PINs and passwords by disguising them within a visually camouflaged grid of random characters. It allows users to create mnemonic cards, mentally mapping data positions for uncrackable privacy.
- Hide PINs and passwords
- Mnemonic card system
- Camouflaged data display
- Automatic iCloud sync
- Multiple data cards
- Uncrackable security
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Mnemonizer hides your PIN codes and passwords in a camouflaging environment, making them uncrackable for frauds and undetectable for spying eyes. ○○○ “Mnemonizer provides a novel security approach, enabling you to obscure your codes in plain text.” – TUAW ○○○ HOW IT WORKS The system generates a mnemonic card with a cell field. Each cell starts with a random editable value - number/letter/symbol and color. All you need to do is choose a place, where you’d like to hide your data and edit the corresponding cells. Place your data on the field in any convenient way (in a simple line, in a zigzag or even as a skip pattern). Then mentally mark its position, give a name to the card and your stored information is ready to use. On second opening, your brain instantly recognizes the position of the data, while everyone else sees a mess. In a variety of up to 9,223,372,036,854,775,807 (2^63) of possible arrangement combinations, guessing or cracking gets impossible. Thus, yours will stay only yours. FEATURES - your data stays safe at all times, even if someone sees your screen - hide passwords and PIN codes among random symbols on mnemonic cards - store all data on one card or create separate cards for different data - nothing to intercept or spy, thus nearly impossible to crack - automatic iCloud sync and backup ○○○ More from Happymagenta: · Spyglass - outdoor GPS with augmented reality · Scany - WiFi scanner and network utility
withAppData
This app allows users to manage folders and files within their Dropbox account. It supports creating, renaming, moving, copying, and deleting files and folders, as well as downloading and uploading content. The app also offers file viewing for various formats and integration with iTunes for data transfer.
- File and folder management
- Create, rename, move, copy, delete
- Upload and download files
- Multi-select for operations
- File viewing for multiple formats
- iTunes integration for data transfer
- Web browser download functionality
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withAppData [withAppData summary] Dropbox it manage folders and files with Dropbox system. download and upload files using famous cloud system of Dropbox. [current function] (1) file download(file only) (2) file upload(file only) (3) move another folder ※move folder to subfolder or parent folder. (4)create new folder (5)rename (6)remove (7)move(file only) (8)copy(file only) please login certification. folder manage folder manage it manage include files.(file included from Dropbox and iTunes application) [main funtion] (1) create new folder create new folder selected directory. (2) rename rename folder and files (3) remove remove selected folders and files.it is able to multi select. (4) move move folders and files. if exists same files,display confirm messagebox. if permitted overwrite files,execute move disposal. it is able to multi select. (5) copy copy folders and files. if exists same file name,display confirm messagebox. if permitted copy files,execute copy disposal copy new file name with add number ex.) [before] xxx.txt [after] xxx (1).txt (5) file view view selected file. [current function] text file(txt/log) CSV file(csv) PDF(pdf) Excel file(xls/xlsx) Power point file(ppt/pptx) WORD file(doc) HTML file(html/htm/webarchive) image file(png/jpg/gif/bmp) movie file(mp4/mov) prepare siwtch change vertical layout to horizontal for layout button. prepare movie screen for caputre button. zip file(zip) ※prepare textbox for input password with zip file. music file(mp3/wav/m4a) using iTunes connect iPhone with computer.import or export selected files using iTunes application. [simple step] (1) connect certification with iPhone and computer connect iPhone and your computer using USB. (2) select device select DEVICE on the iTunes application screen. (3) 'App' select select 'App' on the iTunes application screen. (4) add file or save file if scroll down App area,find application list that is able to using iTunes application. select applicaiton in the list and click add button or save button. these button function has import or export files. data cooperation data cooperation with developed apps of abc3.me. after report impossible data cooperration apps. [data cooperation Application] (1)AccountBook (2)abc3.me02(water and lighting and heating expenses) Web browser(download) if link tap on web page, display dialog. (1)open URL link (2)download from URL link (3)copy URL link rating 17+: Since this app allows unfiltered access to the internet. ※You can access the web freely. select option button and OK button. ※favor list screen 6. search folder and file folder or file search option and extention search option, display result of both matching folder or file list. best regards, abc3.me by abc3.me
Screenshots
Verdict
The clearest difference is ads: Mnemonizer at none against withAppData's shown. Mnemonizer also leads on monetization model (free vs ad-supported). withAppData's advantage is update cadence (every 6 days vs every 14 months) and review sentiment (100% vs 83%). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Mnemonizer ships an update every 14 months, withAppData every 6 days. The most recent releases landed on June 4, 2026 and June 7, 2026 respectively.
| Parameter | Mnemonizer | withAppData |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | — |
| Positive reviews | 83.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 — better | — |
| Update frequency | Every 14 months | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 9.0 |
| Further details — not scored | ||
| Size | 18 MB | 27 MB |
| Age rating | 4+ | 17+ |
| Developer | Happymagenta UAB | Kiyotaka Hori |
Customer experience
Mnemonizer
withAppData
In-app purchases
Mnemonizer
No in-app purchases
withAppData
No in-app purchases









