Comparison

Uboard vs PDF Compressor

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

Head to head
About

Uboard

Features
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Uboard là nền tảng giám sát và phân tích dữ liệu thông minh, ứng dụng công nghệ IoT và AI để giúp doanh nghiệp theo dõi hoạt động vận hành theo thời gian thực. Uboard thu thập dữ liệu từ thiết bị công nghiệp, hệ thống năng lượng, và môi trường, sau đó trực quan hóa dưới dạng dashboard dễ hiểu. Hệ thống AI Agents được tích hợp cho phép dự báo sản lượng, phát hiện bất thường trước khi sự cố xảy ra, và đề xuất phương án vận hành tối ưu. Uboard không chỉ giúp giảm chi phí năng lượng, tăng hiệu suất, mà còn hỗ trợ doanh nghiệp đáp ứng các tiêu chuẩn quốc tế trong hành trình chuyển đổi số và phát triển bền vững.

About

PDF Compressor

Read full description

PDF Compressor is a fast, simple, and privacy-focused tool for reducing PDF file size on your iPhone and iPad. — COMMON PROBLEMS WE SOLVE — • Application system says "PDF must be under 2MB" but yours is 8MB • Exam registration (civil service, teaching certification, GRE, IELTS) requires smaller PDFs • Visa and passport scans are too large for embassy upload portals • Email attachments exceed the 25MB limit • Contracts, invoices, and resumes need to be smaller for sharing • Academic journal submission systems have strict PDF size limits If any of these sound familiar, PDF Compressor can fix it in seconds. — KEY FEATURES — COMPRESS TO A SPECIFIC TARGET SIZE Choose your target and let the app handle the rest: • 500KB — For strict application forms • 1MB — For exam registrations • 2MB — Most common, works for most upload systems • 5MB — For visa and passport documents • 10MB — For email attachments and file sharing • Custom — Set any target size you need CLEAR RESULTS • See original size vs. compressed size • View compression ratio (e.g., reduced by 78%) • Know immediately if your target was met • Preview the compressed PDF to verify readability SAVE & SHARE • Save to iCloud Drive, local folders, or other locations • Share via Messages, Mail, AirDrop, or any app • Smart file naming for easy organization • Batch compress multiple PDFs with Pro — PRIVACY FIRST — PDF Compressor processes everything on your device. Your PDF files are never uploaded to any server. We don't read, store, or share your file content. No third-party analytics, no ad tracking, no data collection. — PLEASE NOTE — Compression results vary by PDF type: • Scanned / image-heavy PDFs — Typically see 50%–90% size reduction • Text-only PDFs — Already small; limited compression possible • If the target isn't met, try a larger target — PDF COMPRESSOR PRO — Free users can compress up to 1 time per day. Upgrade to Pro for: • Unlimited PDF compression • Custom target sizes • Batch compression for multiple PDFs • Ad-free, distraction-free experience Choose from flexible options: a one-time purchase Lifetime Pro (unlocked forever), or flexible Monthly Pro and Yearly Pro auto-renewable subscription plans. — IN-APP PURCHASES & SUBSCRIPTIONS TERMS — • Plans and Billing: Monthly Pro and Yearly Pro are auto-renewable subscriptions. Lifetime Pro is a one-time purchase. Actual prices are shown on the App Store product page and purchase sheet. • Auto-Renewal: Payment will be charged to your iTunes Account at confirmation of purchase. Subscriptions will automatically renew at the same price and duration unless auto-renew is turned off at least 24 hours before the end of the current billing period. Your account will be charged for renewal within 24 hours prior to the end of the current period at the cost of the chosen plan. • Manage Subscriptions: You can manage your subscriptions and turn off auto-renewal at any time by going to your App Store Account Settings after purchase. • Restore Purchases: If you have previously unlocked Pro, you can reactivate it by clicking "Restore Purchases" on the paywall or settings screen. • Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Questions or feedback? Reach us through Settings > Contact Us.

Screenshots

Uboard4 screens
PDF Compressor4 screens

Verdict

The call

The clearest difference is in-app purchases: Uboard at none against PDF Compressor's 3. Uboard also leads on update cadence (every 10 days vs every 3 weeks) and iOS requirement (12.0 vs 16.0). On price, ads and device support 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. PDF Compressor sells 3 in-app purchases, starting at $0.99 per month. Uboard asks for nothing beyond the download.

UpkeepUpdate frequency

Uboard ships an update every 10 days, PDF Compressor every 3 weeks. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 3 level
Uboard versus PDF Compressor: the parameters behind the verdict, then further details
ParameterUboardPDF Compressor
PriceFreeFree
Update frequencyEvery 10 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size40 MB7 MB
Age rating4+4+
DeveloperUDATA JOINT STOCK COMPANY荣晖 丁

In-app purchases

None

Uboard

No in-app purchases

3 purchases

PDF Compressor

Subscriptions2
  • Monthly Pro$0.991 Month
  • Yearly Pro$2.991 Year
One-time1
  • Lifetime Pro$3.99

Questions

Is Uboard free?
Uboard is free to download, with no in-app purchases.
Is PDF Compressor free?
PDF Compressor is free to download, with in-app purchases available.
Do Uboard or PDF Compressor have ads?
Neither Uboard nor PDF Compressor shows ads.
Which is updated more often, Uboard or PDF Compressor?
Uboard ships an update every 10 days, and PDF Compressor every 3 weeks. Most recently, Uboard was updated on November 8, 2026 and PDF Compressor on October 31, 2026.

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