# 日语发音词汇学习 vs OpenFlat

The clearest difference is update cadence: OpenFlat at every 2 weeks against 日语发音词汇学习's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 日语发音词汇学习 sells 1 one-off in-app purchase and OpenFlat sells 10 in-app purchases, starting at $49.99 per month. Whichever you choose, the download price is not the number that matters.

日语发音词汇学习 ships an update every 3 months, OpenFlat every 2 weeks. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | 日语发音词汇学习 | OpenFlat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/openflat/id6756606310/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 36 MB | 81 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Haidi Digital Publishing Technology Co., Ltd.](https://appshunter.io/developer/1094639160) | [柳 杨](https://appshunter.io/developer/1734826226) |

## What reviewers say

### 日语发音词汇学习

[App page](https://appshunter.io/ios/app/id1107525620)

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 日语发音入门与3000词 | $3.99 | one-time |


### OpenFlat

[App page](https://appshunter.io/ios/app/openflat/id6756606310)

This app provides an online teaching platform for individual instructors, featuring interactive whiteboards, audio/video communication, presentation tools, and recording capabilities. Users can easily join, create, and schedule virtual classrooms. It aims to be the preferred tool for online educators.

**Highlights:** Multi-person online whiteboard, Audio and video communication, PPT presentation with animations, Room recording and playback, Screen sharing, Room creation, joining, and scheduling

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenFlat 高级版连续包月 | $49.99 | per month |
| OpenFlat 基础版连续包年 | $79.99 | per year |
| OpenFlat 课次购买 | $0.99 | one-time |
| OpenFlat 基础版一个月 | $6.99 | one-time |
| OpenFlat 专业版一个月 | $22.99 | one-time |
| OpenFlat 高级版一个月 | $49.99 | one-time |
| OpenFlat 基础版十二个月 | $79.99 | one-time |
| OpenFlat 专业版十二个月 | $249.99 | one-time |
| OpenFlat 高级版十二个月 | $599.99 | one-time |
| OpenFlat 畅享版 | $900.00 | one-time |


## Frequently asked questions

### Is 日语发音词汇学习 free?

日语发音词汇学习 is free to download, with in-app purchases available.

### Is OpenFlat free?

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

### Do 日语发音词汇学习 or OpenFlat have ads?

Neither 日语发音词汇学习 nor OpenFlat shows ads.

### Which is updated more often, 日语发音词汇学习 or OpenFlat?

日语发音词汇学习 ships an update every 3 months, and OpenFlat every 2 weeks. Most recently, 日语发音词汇学习 was updated on September 17, 2026 and OpenFlat on September 13, 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.*