Comparison

91 Payments vs Kaspa Observer

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

Head to head
About

91 Payments

Features
Read full description

91 Payments offers a licensed environment for executing cross-border transactions. From supply chain payments to partner settlements, our infrastructure ensures your funds move securely and compliantly across borders.

About

Kaspa Observer

Features
Read full description

KasObs is a read-only tracker for public Kaspa addresses. It is not a wallet and does not store private keys. Track any public address in real time, organize addresses like a portfolio, and explore on-chain activity with a fast, privacy-first experience. No account, no login. Key Features - Kaspa Hub with 4 tabs: Stream / Graph / Analytics / News - Graph explorer: interactive address graph, filters, node expansion, pagination, and pinned nodes - Analytics: Top-100 holders and Known Addresses with quick observe/open actions - Redesigned Address Viewer with a dedicated Connections section - *.kas domain resolution in address flows (including Add Address and Graph input) - Real-time balance updates - Multi-address dashboard with groups, totals, and collapsible sections - Filters and sorting by balance/name, group filters, hide totals, hide zero balances - Live KAS price with key network stats (market cap, circulating supply, difficulty, hashrate, reward, DAA score) - Interactive price chart with multiple ranges - Transaction history per address with refresh and load more - KRC-20 token balances - KRC-721 NFT holdings with media previews - KNS domains (primary name, listed status, profiles) - QR tools: scan address, show QR, share or save QR image - Open addresses in Kaspa Explorer - Offline/cache mode with network status indicators - Themes and languages support Privacy Your tracked addresses and preferences are stored on your device. Optional analytics and feedback data are sent only with your action/consent.

Screenshots

91 Payments4 screens
Kaspa Observer4 screens

Verdict

The call

The clearest difference is update cadence: Kaspa Observer at weekly against 91 Payments's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

91 Payments ships an update every 3 weeks, Kaspa Observer weekly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard1 real difference ยท 5 level
91 Payments versus Kaspa Observer: the parameters behind the verdict, then further details
Parameter91 PaymentsKaspa Observer
PriceFreeFree
Update frequencyEvery 3 weeksWeekly โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.1 โ€” better15.5
Further details โ€” not scored
Size28 MB74 MB
Age rating4+4+
DeveloperGREY INVENT TECHNOLOGY LIMITEDNikolai Karavanov

In-app purchases

None

91 Payments

No in-app purchases

None

Kaspa Observer

No in-app purchases

Questions

Is 91 Payments free?
91 Payments is free to download, with no in-app purchases.
Is Kaspa Observer free?
Kaspa Observer is free to download, with no in-app purchases.
Do 91 Payments or Kaspa Observer have ads?
Neither 91 Payments nor Kaspa Observer shows ads.
Which is updated more often, 91 Payments or Kaspa Observer?
91 Payments ships an update every 3 weeks, and Kaspa Observer weekly. Most recently, 91 Payments was updated on October 30, 2026 and Kaspa Observer on November 5, 2026.

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