# Kaspa Observer vs Offbook

The clearest difference is in-app purchases: Kaspa Observer at none against Offbook's 2. Kaspa Observer also leads on iOS requirement (15.5 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Offbook sells 2 in-app purchases, starting at $4.99 per month. Kaspa Observer asks for nothing beyond the download.

## The numbers

| Metric | Kaspa Observer | Offbook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 74 MB | 2 MB |
| Requires iOS | **15.5** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nikolai Karavanov](https://appshunter.io/developer/1829272078) | [BULPARA TEKNOLOJI LIMITED SIRKETI](https://appshunter.io/developer/1552593177) |

## What reviewers say

### Kaspa Observer

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Offbook

[App page](https://appshunter.io/ios/app/offbook-budget-tracker/id6757909647)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Annual | $39.99 | per year |


## Frequently asked questions

### Is Kaspa Observer free?

Kaspa Observer is free to download, with no in-app purchases.

### Is Offbook free?

Offbook is free to download, with in-app purchases available.

### Do Kaspa Observer or Offbook have ads?

Neither Kaspa Observer nor Offbook shows ads.

---

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