Comparison

ProbePay vs DarkWalls

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

Head to head
About

ProbePay

An AI-powered platform offering one-click services for RWA projects. It provides valuable business intelligence and investment suggestions for global private and alternative investments.

Highlights
  • AI-powered platform
  • One-click RWA project services
  • Business intelligence insights
  • Private investment support
  • Alternative investment suggestions
Features
Read full description

ProbeAI是PROBE生态产品矩阵中的人工智能平台,由自研AI模型为RWA类项目提供一键式和一站式服务,为全球私人投资和另类投资提供最具商业情报价值的信息和建议。 ProbeAI is an artificial intelligence platform in the PROBE ecological product matrix. It uses self-developed AI models to provide one-click and one-stop services for RWA projects, and provides the most valuable business intelligence information and suggestions for global private investment and alternative investments.

About

DarkWalls

Features
Read full description

BUILT FOR IPHONE DUO DarkWalls cuts its Duo-native wallpapers for all three screens — the Duo cover screen, the Duo inner screen, and standard iPhone. Each rendition is framed on its own, so the subject stays where it belongs instead of being stretched across the fold or cropped off the edge. Twenty-eight are Duo-native at launch and the set keeps growing. Open the phone and the grid reflows to the wider canvas. Close it and the layout reads cleanly in the narrower cover column, clear of the status bar. Before you save, preview how a wallpaper sits on the cover screen or the inner screen and pick the crop you want. A Duo-native filter lets you browse only the wallpapers made for your device. Leave it off and you get the whole library, with Duo-native artwork still served at its own crop. WHY OLED MATTERS OLED pixels switch off completely for true black. A wallpaper built around #000000 draws less power, deepens contrast across everything else on screen, and stops the glow that makes a phone hard to look at late at night. Wallpapers are chosen for their black values, and new artwork is measured before it ships — mean luminance, near-black coverage, and clean frame edges. WHAT YOU GET A hand-picked library across curated moods — Yoru (quiet Japanese nights), Hearth (cozy interiors by warm light), Moonlit (forests and peaks under the night sky), Samurai, Torii, Koi, Abstract, Cosmic, Rain & Mist, Silhouettes and more. Search by title or tag. Save what you like to a DarkWalls album in Photos. WHO IT'S FOR People who prefer less visual noise. If your phone lives in dark mode, if you like interfaces that whisper rather than shout, this is tuned for you. FEATURES — Duo cover and inner screen renditions, framed individually — Duo-native filter, so you can browse only what was made for your device — Layouts that adapt across the fold, including the cover screen's reserved status-bar band — New artwork measured for true-black values, not just chosen by eye — Text and tag search with recent history — One-tap save to Photos, organized into a DarkWalls album — Favorites kept on-device, never synced or shared — Home Screen Quick Actions for Favorites, Search and Random Tonight — No account, no login, no tracking profile DarkWalls is free, supported by a short ad before each save. A one-time Remove Ads purchase turns them off permanently on your device. No subscription. Built for iPhone and iPhone Duo with native touches throughout — translucent blur, SF Symbols, haptics, quick actions, and full respect for your photo library. 夜 — "yoru", the Japanese word for night. DarkWalls is made for the quiet hours.

Screenshots

ProbePay3 screens
DarkWalls4 screens

Verdict

The call

The clearest difference is in-app purchases: ProbePay at none against DarkWalls's 1. ProbePay also leads on ads (none vs shown) and iOS requirement (13.0 vs 17.0). DarkWalls's advantage is update cadence (weekly vs every 2 months). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. DarkWalls sells 1 one-off in-app purchase. ProbePay asks for nothing beyond the download.

UpkeepUpdate frequency

ProbePay ships an update every 2 months, DarkWalls weekly. The most recent releases landed on October 22, 2026 and October 7, 2026 respectively.

Scorecard4 real differences · 5 level
ProbePay versus DarkWalls: the parameters behind the verdict, then further details
ParameterProbePayDarkWalls
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size63 MB6 MB
Age rating4+4+
DeveloperPROBE EXCHANGE FINTECH UABAsharaf Ali

In-app purchases

None

ProbePay

No in-app purchases

1 purchases

DarkWalls

One-time1
  • Remove Ads$1.99

Questions

Is ProbePay free?
ProbePay is free to download, with no in-app purchases.
Is DarkWalls free?
DarkWalls is free to download, with in-app purchases available.
Do ProbePay or DarkWalls have ads?
DarkWalls shows ads; ProbePay does not.
Which is updated more often, ProbePay or DarkWalls?
ProbePay ships an update every 2 months, and DarkWalls weekly. Most recently, ProbePay was updated on October 22, 2026 and DarkWalls on October 7, 2026.

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