# Invoice Manager|SIMPL vs Seikyuu

The clearest difference is update cadence: Seikyuu at daily against Invoice Manager|SIMPL's every 3 days. Seikyuu also leads on device support (4 vs 2) and iOS requirement (13.0 vs 15.1). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Invoice Manager|SIMPL sells 2 in-app purchases, starting at $1.95 per 7 days and Seikyuu sells 4 in-app purchases, starting at $19.00 per month. Whichever you choose, the download price is not the number that matters.

Invoice Manager|SIMPL ships an update every 3 days, Seikyuu daily. The most recent releases landed on October 28, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Invoice Manager|SIMPL | Seikyuu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/seikyuu/id6753657899/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 days | **Daily** |
| Monetization | — | Freemium |
| Size | 27 MB | 28 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [ELVIS HOFMARKS](https://appshunter.io/developer/1776013069) | [Carlos Ramirez](https://appshunter.io/developer/1844215160) |

## What reviewers say

### Invoice Manager|SIMPL

[App page](https://appshunter.io/ios/app/invoice-managersimpl/id6743813894)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Auto Renewable Subscription | $1.95 | per 7 days |
| Auto Renewable Subscription | $5.95 | per month |


### Seikyuu

[App page](https://appshunter.io/ios/app/seikyuu/id6753657899)

This app helps freelancers and small businesses create and send professional invoices quickly. It allows clients to pay instantly via payment links and offers features like payment plans, expense tracking, and real-time revenue insights.

**Highlights:** Instant payment links via Stripe, Customizable invoice templates, Client payment plans, Expense tracking with receipt photos, Real-time revenue dashboard, Cloud sync across devices

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Seikyuu Pro Month | $19.00 | per month |
| Seikyuu Business Month | $49.00 | per month |
| Seikyuu Pro Year | $190.00 | per year |
| Seikyuu Business Year | $490.00 | per year |


## Frequently asked questions

### Is Invoice Manager|SIMPL free?

Invoice Manager|SIMPL is free to download, with in-app purchases available.

### Is Seikyuu free?

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

### Do Invoice Manager|SIMPL or Seikyuu have ads?

Neither Invoice Manager|SIMPL nor Seikyuu shows ads.

### Which is updated more often, Invoice Manager|SIMPL or Seikyuu?

Invoice Manager|SIMPL ships an update every 3 days, and Seikyuu daily. Most recently, Invoice Manager|SIMPL was updated on October 28, 2026 and Seikyuu on October 21, 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.*