EREX vs PDF Compressor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EREX
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Visualisation multi-protocole (KNX, Modbus, Bacnet, SONOS, etc.. ), permettant de commander l'ensemble de votre installation domotique depuis votre téléphone ou de votre tablette.
PDF Compressor
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Make any PDF small enough to send. Pick a size (5 MB, 10 MB, anything) and PDF Compressor hits it. No guessing between "low, medium, high" quality settings, and no uploading your documents to someone's server: compression runs entirely on your iPhone and iPad. WHY PDF COMPRESSOR • Exact size targets: tap 1, 2, 5, 10 or 25 MB, or type any number you want with Premium. The result fits the limit every time. • 100% offline and private: your contracts, scans and statements never leave the device. No uploads, no account, no tracking. • Keeps text sharp: smart mode preserves selectable, searchable text whenever possible, and tells you when it did. • Preview before you send: open the compressed PDF right in the app and check the quality, with the exact savings on the row. • Batch mode: compress up to 20 PDFs in one run (Premium). • Works everywhere: pick files from the Files app, or send a PDF straight from Mail with "Open in PDF Compressor". • Savings history: track every megabyte you have freed, day by day. MADE FOR • Emailing scans that are over the attachment limit • Uploading documents to portals with strict size caps • Sending contracts and reports through chat apps • Archiving old scans without filling your storage FREE EVERY DAY One PDF a day, up to 20 MB, at full quality. No watermark, no sign-up, no ads. PDF COMPRESSOR PREMIUM Any file size, unlimited compressions, batch mode up to 20 files, custom size targets and PDF info removal. Premium is available as a weekly or yearly auto-renewable subscription. Subscriptions auto-renew until canceled. Cancel anytime in your Apple ID Subscriptions settings at least 24 hours before the renewal date. Privacy policy: https://app.innovaapps.ai/privacy Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Screenshots
Verdict
The clearest difference is in-app purchases: EREX at none against PDF Compressor's 2. EREX also leads on iOS requirement (11.0 vs 17.0). PDF Compressor's advantage is device support. On price 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 2 in-app purchases, starting at $4.99 per 7 days. EREX asks for nothing beyond the download.
| Parameter | EREX | PDF Compressor |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 2 months |
| Ads | — | No |
| In-app purchases | No — better | Yes |
| Devices | — | iPhone, iPad — better |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 56 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Ergo3 Sarl | Alex Gameli Heyman |
In-app purchases
EREX
No in-app purchases
PDF Compressor
- Weekly$4.997 Days
- Yearly$24.991 Year









