USB Sharp Pro vs Car Maintenance Record Book
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
USB Sharp Pro
Transform your iPhone or iPad into a portable wireless storage disk for efficient file management. Supports a wide range of file types for viewing, editing, and transferring via Wi-Fi or iTunes.
- Wireless storage disk
- File management
- Wi-Fi transfer
- iTunes file sharing
- Document reader
- E-book reader
- Music player
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USB Sharp Pro can turn your iPhone, ipad, ipod into a large Capacity, Portable and Wireless storage disk, Facilitate and efficient manage of your files! ------------------------------------ V1.2.2 Updates 1.Support for editing php, js, html file. 2.Support the open format, such as flv,asf,rmvb,avi,mpg,mkv,wmv. ------------------------------------ V1.2.0 Updates 1. Dropbox Operate, multiple files upload & download, history,create folder 2. Add manual ------------------------------------ V1.1.3 Updates 1.Chrome and Firefox Supported upload multiple files 2.Extract files from encryption .rar ------------------------------------ V1.1.2 Updates ** Optimization pdf reader, ** Support for importing videos/photos to Photo Library ** Support for exporting video from Photo Library ------------------------------------ V1.1.1 Updates ** Search file(folder) name function added ** Picture Viewer Improved ** Unzip type added ------------------------------------ V1.1.0 Updates New Features: ** add authentication for local login ** add authentication for wifi transfer ** Custom background image; ** Sorting by file size **** Build-in Music Player [Support .mp3 .m4a .aac] ** Background playing; ** Sorting by song title, artist name and album name in the playlists ** Support many kinds of playing modes ** Support playing the music inside iPod ** Custom background image; ** Support searching lyrics on-line and showing it in synchronization , and support the lyrics duplication ** Support lyrics edit; ------------------------------------ V1.0.1 Updates * Full screen view files Supported * Multiple photo import Supported Specifically as follows: **** Facilitate and efficient manage files * Sorting by file name、create time and file type * View, copy, move, delete, rename, email, zip Compression and unzip files/folders * Encryption folder, protect your files * Extract all files from a compressed .zip file * Glide deleting function * Select all and Cancel all operate * Transferring files by wifi and iTunes file sharing * Email multiple files, folder Supported * Open email attachments * Photo import Supported * Open files in other applications * Landscape mode supported * iPad-compatible **** Facilitate and efficient view files * E-book reader (.epub) * Thumbnail preview, Photo View, Zoom * Players, support mp3、m4a、aac and mp4 * Document reader, support .pdf .rtf .rtfd .doc .docx etc * Multi-touch Supported, Zoom files * Bookmark supported, fast file location **** Facilitate and efficient edit plain files * Convert plain file encoding (Unicode,UTF-8 etc) * Plain file content copy, cut, paste and replace * External file copy and paste **** Add plain text(default encoding UTF-8), photos(from Camera) and folders **** Support Simplified Chinese and English USB Sharp Pro support list of file types: E-book: epub Plain text: .txt .php .js .html Document: .pdf .csv .rtf .rtfd .doc .docx .xls .xlsx .ppt .pptx (office 2003 or later) Image: .png .jpg .jpeg .gif .bmp .xbm .tif .tiff Audio: .mp3 .m4a .aac Video: .mp4 .mov .m4v .3gp .flv .asf .rmvb .avi .mpg .mkv .wmv Web: .htm .html .xhtml Compressed: .zip .rar
Car Maintenance Record Book
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Your car's whole service story, in one ledger that stays on your phone. CarMaintain is a car maintenance log for people who want a straight answer to three questions: what was done, what did it cost, and what is due next. Log every oil change, tire rotation, brake job and repair against the odometer, and the app turns that history into due dates, cost totals and a clean service record — no account to create, no ads between you and your records. WHAT YOU GET • Open the app and see "Front brake pads: 800 mi past due" — every interval tracked against your real odometer and the calendar • A running ledger of every service: date, work, odometer, cost and notes, kept the way a workshop would keep it • Year-to-date spend, a month-by-month cost chart and running cost per mile, so "what is this car costing me" finally has a number • A reminder on your phone before date-based services come due, at the hour you choose • Every vehicle in the household in one garage, each with its own ledger and its own intervals • A CSV of the full service history you can hand to a buyer or a mechanic in two taps PERFECT FOR • DIY owners who change their own oil and need "when was it last done" on record • Households juggling services across several family cars • Anyone preparing to sell — a documented service history is worth real money at the kerb • High-mileage commuters watching the running cost per mile creep up WHY NOT JUST A GLOVEBOX FULL OF RECEIPTS? Receipts fade and spreadsheets don't know your odometer. CarMaintain ties every entry to a mileage reading, so service intervals become live statuses — OK, due soon, overdue — instead of guesswork. And unlike the big car-care apps, there is no account, no parts upsell and no ad banner sitting on top of your history. PRIVATE BY DEFAULT Your records live on your device and go nowhere else. No sign-up, no cloud account, no tracking. Honest limits too: the app tells you plainly that mileage-only intervals cannot fire a phone notification — only date-based ones can, because iOS cannot watch your odometer. FULL ACCESS Every part of the app — the garage, the ledger, the cost charts, custom intervals and service reminders — is unlocked by a single purchase, chosen when you first open the app. Pick the access that fits: weekly, yearly, or a one-time lifetime purchase. Weekly and yearly access are auto-renewing subscriptions. Payment is charged to your Apple Account at confirmation of purchase, and the subscription renews automatically for the same period unless auto-renew is turned off at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the period ends. Manage or cancel in iOS Settings > your name > Subscriptions. Lifetime is a one-time purchase and does not renew. Add your car, enter the odometer and log the last service you remember — the next due date is on screen before you leave the parking lot. Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy Support: support@leanstudio.asia
Screenshots
Verdict
The clearest difference is price: Car Maintenance Record Book at Free against USB Sharp Pro's $2.99. USB Sharp Pro's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On update cadence, 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
Car Maintenance Record Book is free to download; USB Sharp Pro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
USB Sharp Pro ships an update every 2 months, Car Maintenance Record Book every 4 months. The most recent releases landed on October 16, 2026 and September 27, 2026 respectively.
| Parameter | USB Sharp Pro | Car Maintenance Record Book |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.0 (12 ratings) — better | — |
| Positive reviews | 59.6% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 52 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | 锦文 游 | LEAN ASIA CO., LTD |
In-app purchases
USB Sharp Pro
No in-app purchases
Car Maintenance Record Book
No in-app purchases
Questions
Is USB Sharp Pro free?
Is Car Maintenance Record Book free?
Do USB Sharp Pro or Car Maintenance Record Book have ads?
Which is updated more often, USB Sharp Pro or Car Maintenance Record Book?
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