MSDC vs 無機化学
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MSDC
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MSDC - 蒙古语语音数据采集应用 通过MSDC采集来自内蒙古，青海，新疆等地蒙古语使用者的语音数据。 用于蒙古族语音识别，语音输入，语音合成及蒙古语教育等领域的研发。 支持的方言：察哈尔，额济纳，巴林，科尔沁，喀喇沁，鄂尔多斯，土尔扈特，青海，布里亚特及其他。 ■合作单位： 株式会社阿拉慕斯 YouTeacher株式会社 日本蒙古族信息技术协会
無機化学
This app helps high school students memorize inorganic chemistry concepts. It covers reaction principles, metallic elements, and non-metallic elements, utilizing a red-sheet overlay for easy output and review. User feedback is actively incorporated for improvements.
- Red sheet overlay for output practice
- Comprehensive inorganic chemistry content
- Covers reaction principles
- Covers metallic elements
- Covers non-metallic elements
- User feedback integration
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高校生の時、欲しかったアプリを作りました。 ・赤シートで、楽にアウトプット ・高校無機化学の内容を網羅（反応原理、金属元素、非金属元素） ・あなたの要望を聞かせてください。反映します。 利用規約：https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: MSDC at none against 無機化学's 3. MSDC also leads on update cadence (every 2 weeks vs every 2 months) and iOS requirement (11.0 vs 26.0). On price, ads and device support 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. 無機化学 sells 3 in-app purchases, starting at $1.99 per month. MSDC asks for nothing beyond the download.
MSDC ships an update every 2 weeks, 無機化学 every 2 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.
| Parameter | MSDC | 無機化学 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 86.4% of reviews |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 11 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | YouTeacher Inc. | Akihiko Kitamura |
In-app purchases
MSDC
No in-app purchases
無機化学
- Pro - 1ヶ月$1.991 Month
- Pro - 6ヶ月$11.996 Months
- Pro - 12ヶ月$19.991 Year
