# 第二種電気工事士  資格試験対策｜D vs Not Today. Quit Habit Tracker

The clearest difference is in-app purchases: Not Today. Quit Habit Tracker at none against 第二種電気工事士  資格試験対策｜D's 1. Not Today. Quit Habit Tracker also leads on ads (none vs shown) and update cadence (every 11 days vs every 6 months). 第二種電気工事士  資格試験対策｜D's advantage is device support (3 vs 1) and iOS requirement (9.0 vs 17.0). On price there is nothing between them.

Both are free to download. 第二種電気工事士  資格試験対策｜D sells 1 one-off in-app purchase. Not Today. Quit Habit Tracker asks for nothing beyond the download.

第二種電気工事士  資格試験対策｜D ships an update every 6 months, Not Today. Quit Habit Tracker every 11 days. The most recent releases landed on October 16, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 第二種電気工事士  資格試験対策｜D | Not Today. Quit Habit Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 82.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 11 days** |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 10 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Eriya Okuno](https://appshunter.io/developer/1499747901) | [YOSHIKI KOAKUTSU](https://appshunter.io/developer/1885895866) |

## What reviewers say

### 第二種電気工事士  資格試験対策｜D

[App page](https://appshunter.io/ios/app/d-learning/id1536908296)

Prepare for the Second Class Electrician qualification exam with practice tests and detailed explanations. Review missed or flagged questions, and practice by difficulty level or subject. Additional question sets are available for purchase.

**Highlights:** Practice tests by difficulty and subject, Review missed and flagged questions, Timed practice sessions, Detailed explanations, Adjustable text size, Progress tracking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 有料問題 | $3.99 | one-time |


### Not Today. Quit Habit Tracker

[App page](https://appshunter.io/ios/app/not-today-quit-habit-tracker/id6794293115)

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

**In-app purchases:** none


## Frequently asked questions

### Is 第二種電気工事士  資格試験対策｜D free?

第二種電気工事士  資格試験対策｜D is free to download, with in-app purchases available.

### Is Not Today. Quit Habit Tracker free?

Not Today. Quit Habit Tracker is free to download, with no in-app purchases.

### Do 第二種電気工事士  資格試験対策｜D or Not Today. Quit Habit Tracker have ads?

第二種電気工事士  資格試験対策｜D shows ads; Not Today. Quit Habit Tracker does not.

### Which is updated more often, 第二種電気工事士  資格試験対策｜D or Not Today. Quit Habit Tracker?

第二種電気工事士  資格試験対策｜D ships an update every 6 months, and Not Today. Quit Habit Tracker every 11 days. Most recently, 第二種電気工事士  資格試験対策｜D was updated on October 16, 2026 and Not Today. Quit Habit Tracker on October 5, 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.*