# 91 Payments vs Kaspa Observer

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.

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

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.

## The numbers

| Metric | 91 Payments | Kaspa Observer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 28 MB | 74 MB |
| Requires iOS | **15.1** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GREY INVENT TECHNOLOGY LIMITED](https://appshunter.io/developer/1811104374) | [Nikolai Karavanov](https://appshunter.io/developer/1829272078) |

## What reviewers say

### 91 Payments

[App page](https://appshunter.io/ios/app/91-payments/id6746633692)

**Features:** macOS Compatibility

**In-app purchases:** none


### Kaspa Observer

[App page](https://appshunter.io/ios/app/kaspa-observer/id6749205046)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*