# Def Init vs KULMS+ Mobile

The clearest difference is update cadence: KULMS+ Mobile at every 5 days against Def Init's every 3 weeks. Def Init's advantage is iOS requirement (15.0 vs 17.0). 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, KULMS+ Mobile every 5 days. The most recent releases landed on September 14, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Def Init | KULMS+ Mobile |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 33 MB | 4 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DeMiA](https://appshunter.io/developer/1541788198) | [Oonishi Daichi](https://appshunter.io/developer/1893206903) |

## 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


### KULMS+ Mobile

[App page](https://appshunter.io/ios/app/kulms-plus-mobile/id6762236865)

**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 KULMS+ Mobile free?

KULMS+ Mobile is free to download, with no in-app purchases.

### Do Def Init or KULMS+ Mobile have ads?

Neither Def Init nor KULMS+ Mobile shows ads.

### Which is updated more often, Def Init or KULMS+ Mobile?

Def Init ships an update every 3 weeks, and KULMS+ Mobile every 5 days. Most recently, Def Init was updated on September 14, 2026 and KULMS+ Mobile on September 24, 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.*