SoHO Viewer vs 标日AI课堂：中下
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SoHO Viewer
Access and view the latest images from the Solar and Heliospheric Observatory (SoHO). Receive push notifications when new images are available, keeping you updated on solar activity. This app is a convenient tool for anyone interested in space imagery.
- Download latest SoHO images
- Display solar images
- Push notifications for new images
- Badge notification for new images
- Image courtesy of SOHO consortium
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SoHO Viewer is a simple application for downloading and displaying the latest images taken by the Solar and Heliospheric Observatory (SoHO). It includes push notifications so you can be notified by a badge on the application when new images are available. It was quoted as “one of the ten best free applications to have on your iphone if you like stargazing:” http://www.networkworld.com/news/2010/112210-free-iphone-stargazing-apps.html It appears in Mars 2015 edition of Sky And Telescope, page 70. Images are courtesy of SOHO consortium. SOHO is a project of international cooperation between ESA and NASA. If you had like to see images taken by Solar Dynamics Observatory (SDO) please use the SDO Viewer application.
标日AI课堂：中下
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标日AI课堂：轻松学日语，AI智能讲解，听说读写全覆盖 《标日AI课堂》是一款结合AI技术的日语学习应用，专为学习者提供全方位的语言训练。 应用特色： AI智能讲解： 通过AI语音与文字解析，提供实时的词汇、语法讲解，帮助你更高效理解和掌握日语。 课文阅读： 精选标准日本语中级下册课文，逐步提升你的阅读能力。每篇文章都有详细的注释和词汇翻译，帮助你加深理解。 文章音频播放： 每篇课文、单词都配有清晰标准的日语发音，可以进行点读，全篇播放，帮助你训练听力和模仿发音。
Screenshots
Verdict
The clearest difference is in-app purchases: SoHO Viewer at none against 标日AI课堂：中下's 1. SoHO Viewer also leads on ads (none vs shown). 标日AI课堂：中下's advantage is update cadence (every 9 days vs every 2 months). On price, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 标日AI课堂：中下 sells 1 one-off in-app purchase. SoHO Viewer asks for nothing beyond the download.
SoHO Viewer ships an update every 2 months, 标日AI课堂：中下 every 9 days. The most recent releases landed on July 21, 2026 and December 7, 2025 respectively.
| Parameter | SoHO Viewer | 标日AI课堂：中下 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.4 (19 ratings) — better | — |
| Positive reviews | 69.1% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 5 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | Jerome Diaz | 盖粦 徐 |
In-app purchases
SoHO Viewer
No in-app purchases
标日AI课堂：中下
- 标日AI课堂：中下永久会员$2.99
