# AC Camera Pro vs 2021年1級機械保全技能士学科過去問

The clearest difference is update cadence: 2021年1級機械保全技能士学科過去問 at every 2 months against AC Camera Pro's every 23 months. On price, ads, in-app purchases and device support there is nothing between them.

AC Camera Pro costs $1.99 and 2021年1級機械保全技能士学科過去問 $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

AC Camera Pro ships an update every 23 months, 2021年1級機械保全技能士学科過去問 every 2 months. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | AC Camera Pro | 2021年1級機械保全技能士学科過去問 |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 2 months** |
| Monetization | — | Paid |
| Size | 1 MB | 7 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NIPPON INFORMATION CO.,LTD.](https://appshunter.io/developer/396358322) | [shinji ikeda](https://appshunter.io/developer/1615407188) |

## What reviewers say

### AC Camera Pro

[App page](https://appshunter.io/ios/app/ac-camera-pro/id1516433826)

**In-app purchases:** none


### 2021年1級機械保全技能士学科過去問

[App page](https://appshunter.io/ios/app/20211/id1644890831)

This app provides practice questions for the 2021 Level 1 Mechanical Maintenance Engineer exam. It offers various study modes, including all questions, checked questions, and incorrect questions, with explanations to deepen understanding. Users can also set their exam date to track remaining days.

**Highlights:** Practice exam questions, Study modes (all, checked, incorrect), Detailed answer explanations, Exam date countdown, Offline study capability

**In-app purchases:** none


## Frequently asked questions

### Is AC Camera Pro free?

AC Camera Pro costs $1.99, with no in-app purchases.

### Is 2021年1級機械保全技能士学科過去問 free?

2021年1級機械保全技能士学科過去問 costs $1.99, with no in-app purchases.

### Do AC Camera Pro or 2021年1級機械保全技能士学科過去問 have ads?

Neither AC Camera Pro nor 2021年1級機械保全技能士学科過去問 shows ads.

### Which is updated more often, AC Camera Pro or 2021年1級機械保全技能士学科過去問?

AC Camera Pro ships an update every 23 months, and 2021年1級機械保全技能士学科過去問 every 2 months. Most recently, AC Camera Pro was updated on October 14, 2026 and 2021年1級機械保全技能士学科過去問 on October 4, 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.*