# SmartBook Service vs SimplePay Self

The clearest difference is update cadence: SmartBook Service at every 3 weeks against SimplePay Self's every 4 months. 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.

SmartBook Service ships an update every 3 weeks, SimplePay Self every 4 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | SmartBook Service | SimplePay Self |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | — | Free |
| Size | 11 MB | 34 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ONM Systems Ltd.](https://appshunter.io/developer/953087849) | [SimplePay Online Payroll](https://appshunter.io/developer/1501139427) |

## What reviewers say

### SmartBook Service

[App page](https://appshunter.io/ios/app/smartbook-service/id1464190552)

**Features:** macOS Compatibility

**In-app purchases:** none


### SimplePay Self

[App page](https://appshunter.io/ios/app/simplepay-self-service/id1501139428)

Manage essential payroll tasks on the go. This app enables existing users to request leave, submit claims, and view payslips directly from their smartphone. It enhances the online payroll service with convenient mobile access.

**Highlights:** Request leave, Submit claim requests, View payslips, Mobile payroll management, Complements online payroll service

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is SmartBook Service free?

SmartBook Service is free to download, with no in-app purchases.

### Is SimplePay Self free?

SimplePay Self is free to download, with no in-app purchases.

### Do SmartBook Service or SimplePay Self have ads?

Neither SmartBook Service nor SimplePay Self shows ads.

### Which is updated more often, SmartBook Service or SimplePay Self?

SmartBook Service ships an update every 3 weeks, and SimplePay Self every 4 months. Most recently, SmartBook Service was updated on October 26, 2026 and SimplePay Self on October 24, 2026.

---

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