Hand Held Metal Detector vs PDF Under
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hand Held Metal Detector
This app transforms your iPhone or iPad into a functional metal detector. It utilizes the device's magnetometer to identify ferromagnetic metals like steel, iron, gold, and silver. Easily scan bags or pockets for hidden metal objects with vibration mode for discretion.
- Magnetometer-based metal detection
- Identifies ferromagnetic metals
- Vibration mode for discreet scanning
- Works with iPhone and iPad
- Calibration via shaking
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Hand Held Metal Detector Super Scanner Compatible with iPhone and iPad This metal detector was developed, tuned and tested during 4 months and is utilizing iPhone/iPad magnetometer full capabilities. Using this detector you’ll easily identify ferromagnetic metal objects (steel, iron, gold, pure silver). By approaching device to a bag or pocket (you can initially switch device to vibration mode for anonymity), you can easily find out whether there are metal objects. It's not fake app, it's real metal detector, but work with only magnetic metal (such as steel, iron, etc.) Best sensitivity near the camera on your iOS Device. Tip: Shake for calibration
PDF Under
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Your PDF is ready. Then the upload form says: file too large. Maybe it needs to be under 10 MB. Or 2 MB. Or even 500 KB. You don't want to learn compression settings, and you definitely don't want to keep guessing—compress, check the size, try again, compress again. You just need the PDF to fit. That's what PDF Under is built for. Tell it the MB or KB you need, and it works toward exactly that number. But making a PDF smaller is only half the problem. It still has to look like your PDF. Some compression methods shrink a file by turning every page into a picture—smaller, yes, but the text is no longer selectable, and the document never quite looks right again. PDF Under does it differently. Whenever possible, it keeps your text and vector content untouched, and compresses only the embedded images that were taking up the space in the first place. Smaller file. Same document. You choose the number. 500 KB, 1 MB, 2 MB, 5 MB, 10 MB, or a custom target of your own—no "low, medium, high" guessing games, just the size you were actually asked for. And before you save or share anything, you see the result first: the final size, the finished pages, exactly what you're about to send. Where does this happen? On your phone. Not on a server somewhere. Your PDF is never uploaded, which matters more than usual when the document you're shrinking is the one you'd rather not hand to a random compression website in the first place. No account. No sign-in. Just your file, compressed, still yours. Now, the honest part. Not every target is reachable. A fifty-page scanned document doesn't become 500 KB without something giving—that's just how file size and image quality work, and PDF Under won't pretend otherwise. When your target is more aggressive than the document can survive, it tells you plainly, shows you the smallest version that's still readable, and lets you decide from there. No silent damage. No surprises when you open the file later. This is the app for the moment a portal, a form, an inbox, or a government website hands you a number and expects you to hit it—job applications, school submissions, legal filings, an email that keeps bouncing back because the attachment is too big. Select the PDF, set the target, compress, check the result, send it. Five steps, and you're done. PDF Under is free to try—your first three compressions cost nothing. After that, a Weekly, Yearly, or Lifetime plan unlocks unlimited use, so you're never stuck mid-deadline wondering if today's the day you run out. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends, and you can manage or cancel anytime in your Apple Account settings. Full pricing is shown in the app before you're asked to pay anything. Because when a website tells you your PDF is too large, you shouldn't have to become a compression expert just to send a document. You should just be able to get it under the limit. By downloading, you agree to the Standard Apple End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: PDF Under at every 3 weeks against Hand Held Metal Detector's every 5 months. Hand Held Metal Detector's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.6). On price, 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
Both are free to download. Hand Held Metal Detector sells 1 one-off in-app purchase and PDF Under sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Hand Held Metal Detector ships an update every 5 months, PDF Under every 3 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.
| Parameter | Hand Held Metal Detector | PDF Under |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (52 ratings) — better | — |
| Positive reviews | 67.3% of reviews | — |
| Number of ratings | 52 — better | — |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 25 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Tigran Mkhitaryan | Emre KABOGLU |
In-app purchases
Hand Held Metal Detector
- Remove Ads$3.99
PDF Under
- PDF Under Weekly$1.997 Days
- PDF Under Yearly$13.991 Year
- PDF Under Lifetime$19.99
Questions
Is Hand Held Metal Detector free?
Is PDF Under free?
Do Hand Held Metal Detector or PDF Under have ads?
Which is updated more often, Hand Held Metal Detector or PDF Under?
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