Comparison

Scan Documents to PDF l by TSP vs RingGauge

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

Head to head
About

Scan Documents to PDF l by TSP

Transform your phone into a portable scanner. Easily capture documents, receipts, and notes, then save them as PDFs, images, or text. Organize, protect, and share your scanned files with cloud syncing and annotation tools.

Highlights
  • Auto scan with edge detection
  • Save as PDF, Image, or TXT
  • Cloud sync (iCloud, other storage)
  • Password protection
  • Edit, annotate, and add filters
  • Add watermarks
  • Digital signature
  • Text extraction (OCR)
Features
Read full description

Get a scanner in your pocket with Camera Scanner for free. Instantly scan, save and share any document in PDF, Image or TXT formats. Store all your documents and sync them with iCloud or export them to your favourite cloud storage. This is the right app for students and small businesses. Scan anything you need including contracts, receipts, paper notes, books and store your scans as individual files or multi-page PDFs. Our main features include: Auto scan detecting edges with option to tweak the selection Save your scans as images and PDFs Organise your folders and sync your files with iCloud Password-protect your files Edit and annotate your scans, and add Filters to add your desired effects You can add a watermark to your files Conveniently sign your scans, images and PDFs on the go OCR to extract texts from documents ----- Terms and Conditions: https://www.thesaltypistachio.com/document-scanner-terms-and-conditions Privacy Policy: http://thesaltypistachio.com/document-scanner-privacy-policy Do you have any questions or suggestions? Please send them to documentscanner@thesaltypistachio.com

About

RingGauge

Features
Read full description

Buying a ring online or as a surprise and not sure of the size? RingGauge finds the size of a ring that already fits, using a true-size printable chart or circles on your iPhone screen. Print the ring size chart at 100%, check the scale against a real credit card, then lay the ring on the circles and pick the one that matches its inside edge. You can also calibrate your screen with a credit card and compare the ring against an on-screen circle. • PRINTABLE SIZER PDF — a US Letter page with circles for 20 common sizes, from US 3 to 13, drawn at their true inside diameter. • US, UK OR EU LABELS — switch the size system and the chart labels follow: US 3–13, UK F–Z1 or EU 44–70; the app also shows each size's diameter in mm. • BUILT-IN SCALE CHECK — a true-size credit card outline on the chart shows at a glance whether your printer scaled the page. • ON-SCREEN SIZER — slide a bar until it matches a real card's edge, then place the ring on the circle for the size you pick. • PRINT, SHARE OR SAVE — print with AirPrint, share the PDF or save it to Files. Honest scope: RingGauge measures a ring you already have; it does not measure a finger. Print with "fit to page" turned off and check the card outline — if it doesn't match a real card, the circles aren't true size. On screen you match the card's short edge, and the bar starts close to your iPhone's real scale, so a small nudge is usually all it takes. Sizes follow common retail charts and can differ slightly between jewelers and ring widths, so confirm with your jeweler before ordering something valuable. Everything runs on your iPhone. Nothing is uploaded and no account is needed. The on-screen sizer is free to use, and you can make 3 printable sizer PDFs for free. A one-time $4.99 purchase unlocks unlimited PDFs. No subscription, no ads. Questions: overlapmarr@gmail.com

Screenshots

Scan Documents to PDF l by TSP4 screens
RingGauge3 screens

Verdict

The call

The clearest difference is update cadence: RingGauge at every 3 days against Scan Documents to PDF l by TSP's monthly. Scan Documents to PDF l by TSP's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Scan Documents to PDF l by TSP sells 3 in-app purchases, starting at $3.99 per month and RingGauge sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Scan Documents to PDF l by TSP ships an update monthly, RingGauge every 3 days. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

Scorecard3 real differences · 7 level
Scan Documents to PDF l by TSP versus RingGauge: the parameters behind the verdict, then further details
ParameterScan Documents to PDF l by TSPRingGauge
PriceFreeFree
Rating4.6 (258 ratings) — better—
Positive reviews37.5% of reviews—
Number of ratings258 — better—
Update frequencyMonthlyEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.0
Further details — not scored
Size30 MB1 MB
Age rating4+4+
DeveloperThe Salty PistachioJhomar Maravillas

In-app purchases

3 purchases

Scan Documents to PDF l by TSP

Subscriptions3
  • Monthly Subscription7 Days trial2 variants$3.991 Month
  • Quarterly Subscription7 Days trial$9.993 Months
  • Annual Subscription7 Days trial$19.991 Year
1 purchases

RingGauge

One-time1
  • Unlock Unlimited$4.99

Questions

Is Scan Documents to PDF l by TSP free?
Scan Documents to PDF l by TSP is free to download, with in-app purchases available.
Is RingGauge free?
RingGauge is free to download, with in-app purchases available.
Do Scan Documents to PDF l by TSP or RingGauge have ads?
Neither Scan Documents to PDF l by TSP nor RingGauge shows ads.
Which is updated more often, Scan Documents to PDF l by TSP or RingGauge?
Scan Documents to PDF l by TSP ships an update monthly, and RingGauge every 3 days. Most recently, Scan Documents to PDF l by TSP was updated on October 19, 2026 and RingGauge on October 11, 2026.

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