IOT Central vs PDF Compressor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IOT Central
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REQUEA propose une plateforme pour créer des applications IOT avec une rapidité et un niveau de qualité inégalés. La plateforme REQUEA fournit des fonctionnalités côté serveur et des protocoles de communication pour la mise en place d’applications IOT simples, fiables et sécurisées. Grace à l'application mobile IOT Central, vous pourrez retrouver vos applications IOT sur votre smartphone.
PDF Compressor
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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
Verdict
The clearest difference is in-app purchases: IOT Central at none against PDF Compressor's 3. IOT Central also leads on iOS requirement (10.0 vs 16.0). PDF Compressor's advantage is update cadence (every 3 weeks vs every 8 months). 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
Both are free to download. PDF Compressor sells 3 in-app purchases, starting at $0.99 per month. IOT Central asks for nothing beyond the download.
IOT Central ships an update every 8 months, PDF Compressor every 3 weeks. Both last shipped on October 12, 2026.
| Parameter | IOT Central | PDF Compressor |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 44 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Requea | 荣晖 丁 |
In-app purchases
IOT Central
No in-app purchases
PDF Compressor
- Monthly Pro$0.991 Month
- Yearly Pro$2.991 Year
- Lifetime Pro$3.99









