# Def Init vs Sekigae

The clearest difference is update cadence: Sekigae at every 6 days against Def Init's every 3 weeks. Sekigae also leads on iOS requirement (13.0 vs 15.0). 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.

Def Init ships an update every 3 weeks, Sekigae every 6 days. The most recent releases landed on September 14, 2026 and August 3, 2026 respectively.

## The numbers

| Metric | Def Init | Sekigae |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | — | Free |
| Size | 33 MB | 43 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DeMiA](https://appshunter.io/developer/1541788198) | [Hirosuke Yonekubo](https://appshunter.io/developer/1625472869) |

## What reviewers say

### Def Init

[App page](https://appshunter.io/ios/app/def-init/id6746444302)

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

**In-app purchases:** none


### Sekigae

[App page](https://appshunter.io/ios/app/sekigae-kun-seating-chart/id6759973394)

This app simplifies classroom management by automatically generating fair seating charts based on customizable constraints. It allows for AI-powered roster import, flexible classroom layouts, and various reveal animations to engage students. All data is stored locally, ensuring privacy and offline functionality.

**Highlights:** AI roster photo import, Multiple constraint customization, Flexible classroom layout design, Automatic seating generation, Various reveal animations, Export to Excel/CSV and print, Offline functionality

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

**In-app purchases:** none


## Frequently asked questions

### Is Def Init free?

Def Init is free to download, with no in-app purchases.

### Is Sekigae free?

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

### Do Def Init or Sekigae have ads?

Neither Def Init nor Sekigae shows ads.

### Which is updated more often, Def Init or Sekigae?

Def Init ships an update every 3 weeks, and Sekigae every 6 days. Most recently, Def Init was updated on September 14, 2026 and Sekigae on August 3, 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.*