Comparison

CardStaq vs SoloWatermark

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

Head to head
About

CardStaq

Features
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CardStaq keeps every loyalty, membership and library card in one place, so you stop digging through your bag at the till. ADD IT TO APPLE WALLET One tap turns any card into a real Wallet pass. From there it behaves like any other pass on your iPhone -- no need to open CardStaq at all. READY IN A SECOND Tap a card and the barcode fills the screen, big and high-contrast. SCAN OR TYPE Point the camera at the barcode on your existing card and CardStaq works out the symbology itself -- QR, EAN-13, UPC-A, Code 128 and more. Or type the number. YOUR ORDER, YOUR STACK Drag cards into the order you actually use them. The ones you reach for most stay on top. Search and filter when the stack grows. NO ACCOUNT, NO SUBSCRIPTION Nothing to sign up for. Your cards stay on your device. The first card is free; unlimited cards is a single one-time purchase, not a subscription. Works offline, because the checkout queue is exactly where the signal drops.

About

SoloWatermark

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SoloWatermark lets you add watermarks to photos on your iPhone. Built around the idea β€œyour signature on your photos,” you can place text or images on a selected photo, adjust position, size, and opacity, then save straight to your photo library. FREE FEATURES β€’ Text watermarks Enter any text and adjust font and opacity to overlay it on your photos. SOLOWATERMARK PRO FEATURES β€’ Image watermarks Overlay transparent PNGs or background-removed images as watermarks. β€’ Zoom-style tiled watermarks Repeat your watermark across the entire photo. β€’ Markup Draw freely on photos (iOS). β€’ QR code watermarks Embed a URL as a QR code on your photo. β€’ Background removal Extract the subject and save as a transparent PNG (processed on-device). WHO IT’S FOR β€’ Anyone who wants credits or signatures before posting to social media β€’ Sellers and creators watermarking listing or portfolio photos β€’ People looking for a simple, ready-to-use watermark app PRIVACY Photo selection, editing, and saving all happen on your device. We do not upload your photos to developer servers. ABOUT SOLOWATERMARK PRO SoloWatermark Pro is an auto-renewing subscription. Subscribing unlocks all Pro features listed above. Pricing is shown on the purchase screen. β€’ Payment is charged to your Apple ID account β€’ Subscription renews automatically unless canceled at least 24 hours before the end of the current period β€’ Renewal charges are billed within 24 hours before the end of the current period unless canceled in Account Settings β€’ Manage or cancel anytime in App Store account settings after purchase β€’ Any unused portion of a free trial may be forfeited when you purchase a subscription Terms of Service and Privacy Policy are available in the app Settings. β€’ Terms of Service: https://pacific-sandalwood-6de.notion.site/397a1df91a07803da4eadc7142b45b1c β€’ Privacy Policy: https://pacific-sandalwood-6de.notion.site/de0f01e36f5d4d2ebaeed98414a568aa

Screenshots

CardStaq4 screens
SoloWatermark4 screens

Verdict

The call

The clearest difference is update cadence: SoloWatermark at weekly against CardStaq's every 3 months. SoloWatermark also leads on iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. CardStaq sells 1 one-off in-app purchase and SoloWatermark sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CardStaq ships an update every 3 months, SoloWatermark weekly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard2 real differences Β· 4 level
CardStaq versus SoloWatermark: the parameters behind the verdict, then further details
ParameterCardStaqSoloWatermark
PriceFreeFree
Update frequencyEvery 3 monthsWeekly β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS26.016.4 β€” better
Further details β€” not scored
Size4 MB74 MB
Age rating4+4+
DeveloperMark van LindenJUNICHI HASHIMOTO

In-app purchases

1 purchases

CardStaq

One-time1
  • Unlimited Cards$2.99
2 purchases

SoloWatermark

Subscriptions2
  • Premium Membership$1.991 Month
  • Premium Plan 1 Year7 Days trial$11.991 Year

Questions

Is CardStaq free?
CardStaq is free to download, with in-app purchases available.
Is SoloWatermark free?
SoloWatermark is free to download, with in-app purchases available.
Do CardStaq or SoloWatermark have ads?
Neither CardStaq nor SoloWatermark shows ads.
Which is updated more often, CardStaq or SoloWatermark?
CardStaq ships an update every 3 months, and SoloWatermark weekly. Most recently, CardStaq was updated on October 28, 2026 and SoloWatermark on October 24, 2026.

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