# 消費税法　無敵の一問一答 vs Predy

The clearest difference is review sentiment: Predy at 100% against 消費税法　無敵の一問一答's 64%. Predy also leads on update cadence (every 2 days vs every 3 months). 消費税法　無敵の一問一答's advantage is iOS requirement (12.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 消費税法　無敵の一問一答 sells 1 one-off in-app purchase and Predy sells 3 in-app purchases, starting at $4.39 per month. Whichever you choose, the download price is not the number that matters.

消費税法　無敵の一問一答 ships an update every 3 months, Predy every 2 days. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | 消費税法　無敵の一問一答 | Predy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/predy-study-trackerpomodoro/id6749900495/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 63.6% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 63 MB | 342 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Yuki Kawakami](https://appshunter.io/developer/994172232) | [GO SHIMIZU](https://appshunter.io/developer/1767583096) |

## What reviewers say

### 消費税法　無敵の一問一答

[App page](https://appshunter.io/ios/app/id994172233)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 機能アップデート | $59.99 | one-time |


### Predy

[App page](https://appshunter.io/ios/app/predy-study-trackerpomodoro/id6749900495)

This app helps you overcome procrastination and build consistent work habits. It focuses on making starting easy, keeping motivation high, and visualizing your progress. Designed for those who struggle with task management, it turns effort into visible achievement.

**Highlights:** Project-based task management, Work tracking with timers and Pomodoro, StudyWithMe focus mode, AutoPilot for easy task initiation, Streak bonuses and productivity rankings, Progress analytics and prediction training, Goal estimation and feedback

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Predy Premium | $4.39 | per month |
| Predy Premium | $36.49 | per year |
| Predy | $53.99 | one-time |


## Frequently asked questions

### Is 消費税法　無敵の一問一答 free?

消費税法　無敵の一問一答 is free to download, with in-app purchases available.

### Is Predy free?

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

### Do 消費税法　無敵の一問一答 or Predy have ads?

Both 消費税法　無敵の一問一答 and Predy show ads.

### Which is updated more often, 消費税法　無敵の一問一答 or Predy?

消費税法　無敵の一問一答 ships an update every 3 months, and Predy every 2 days. Most recently, 消費税法　無敵の一問一答 was updated on October 8, 2026 and Predy on October 7, 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.*