极速投屏 vs Mental arithmetic quiz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
极速投屏
This app acts as a smart assistant for casting your phone screen to your TV. It supports quick connections for interactive viewing of videos and presentations. Enjoy a seamless experience for local media playback and file sharing on a larger screen.
- One-click connection
- Fast screen casting
- Mainstream video format playback
- File casting for presentations
- Audio and video casting
- Network video streaming
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极速投屏是一款手机投屏电视智能助手，支持一键链接，快速手机投屏电视互动。 让你体验视频影视播放的完美体验。 主要功能主要包含如下： 【主流格式视频播放】我们支持所有主流视频格式播放。 【文件投屏】将会议文件投屏方便开会时讲解。 【影视传输】我们支持通过网络快速传输视频影视进行播放。 【音视频投屏】支持一键快速将手机播放的本地视频、音频投屏到电视。 【订阅周期】 高级周订阅（1周），高级月订阅（1个月），高级年订阅（12个月） 【订阅价格】 高级周订阅28元/周，高级月订阅48元/月，高级年订阅 198元/年 【付款】 用户确认购买并付款后记入iTunes账户 【自动续订】 苹果iTunes账户会在到期前24小时内扣费，扣费成功后，顺延一个订阅周期 【取消自动续订】 订阅会自动续订，若需取消自动续费，请在当前订阅周期到期前至少24小时关闭自动续订，关闭后不再扣费。若未在到期前24小时取消，将自动续订 【隐私政策】 https://docs.qq.com/doc/DSlB5eUZoQXR2SnVk 【用户协议】 https://docs.qq.com/doc/DSlB5eUZoQXR2SnVk
Mental arithmetic quiz
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Results: Statistics and display of results based on different users (local user roles), the total number of practice questions + the number of correct questions + the number of errors + the number that will be completed in the future, as well as the stars you have obtained and the achievements you have achieved; Challenge: quick start; addition operation; subtraction operation; multiplication operation; division operation; endless challenge; Question Bank: (Question Bank Settings) Configure configuration settings for various calculations and customize quizzes that suit you;
Screenshots
Verdict
The clearest difference is in-app purchases: Mental arithmetic quiz at none against 极速投屏's 3. 极速投屏's advantage is update cadence (every 2 days vs every 8 days). On price, ads, 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. 极速投屏 sells 3 in-app purchases, starting at $4.49 per 7 days. Mental arithmetic quiz asks for nothing beyond the download.
极速投屏 ships an update every 2 days, Mental arithmetic quiz every 8 days. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.
| Parameter | 极速投屏 | Mental arithmetic quiz |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 days — better | Every 8 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 12.1 |
| Further details — not scored | ||
| Size | 20 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Guangzhou Dongzu Technology Co.,Ltd. | LiRen Sun |
In-app purchases
极速投屏
- 高级周订阅$4.497 Days
- 高级月订阅3 Days trial$7.491 Month
- 极光年度高级助手3 Days trial$30.991 Year
Mental arithmetic quiz
No in-app purchases
