MSDC vs PFD Calc
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
PFD Calc
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The app calculates prime factorization.
Screenshots
Verdict
The clearest difference is ads: MSDC at none against PFD Calc's shown. MSDC also leads on update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (11.0 vs 15.0). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
MSDC ships an update every 2 weeks, PFD Calc every 5 weeks. The most recent releases landed on October 19, 2026 and October 5, 2026 respectively.
| Parameter | MSDC | PFD Calc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks — better | Every 5 weeks |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 11 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | YouTeacher Inc. | Kazuhisa Kobayashi |
In-app purchases
MSDC
No in-app purchases
PFD Calc
No in-app purchases
Questions
Is MSDC free?
Is PFD Calc free?
Do MSDC or PFD Calc have ads?
Which is updated more often, MSDC or PFD Calc?
Other comparisons
