DataCalc by DPBOX vs FocusPuller
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DataCalc by DPBOX
This tool helps filmmakers calculate video data capacity, transfer times, and recording durations. It offers offline use, iCloud synchronization, and language/unit switching.
- Offline data calculation
- Transfer time estimation
- Recording duration calculation
- Summary of records
- iCloud synchronization
- Language and unit switching
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Portable Data Calculator for Director of Photography, DIT, and professional filmmakers. # How can DataCalc help you? - Offline Use: Use anytime, anywhere, whether in the studio or wild, fast response. - Data Calculation: Calculate the video data capacity under different combination modes. - Transfer Time: Calculate the transmission time required for data at different rates. - Duration estimation: Calculate the video recording duration under a specified capacity. - Summary: Add multiple records to calculate the sum of capacity and transfer time. - Synchronization: Automatically synchronize summary records across multiple devices through iCloud; - Language and units: Support Chinese and English language switching, support conversion standard switching. # Contact us Email: fuxiaopang@gmail.com RedBook: @Gavin Foo # Subscription prices and terms DataCalc by DPBOX can be downloaded for free. If you choose to upgrade to the DataCalc Pro version, you can unlock all paid features. We offer one different purchase option: annual auto-renewal. If you are already a DPBOX Pro user, you can automatically activate DataCalc Pro after logging in with your Apple ID. For annual subscriptions: Once confirmed and paid, it will automatically renew through your Apple iTunes account. After successful payment, the subscription period will be extended. To cancel, please manually turn off the auto-renewal feature in iTunes/Apple ID settings management at least 24 hours before the end of the current subscription period. During the trial period, if you do not cancel the subscription, it will automatically activate and charge at the end of the trial period. This service is at your discretion to cancel; if you choose not to cancel, the renewal service for the next billing cycle will be activated for you. User Agreement: https://dpbox.notion.site/Terms-of-Use-0cd728d8d5074ac9953ce526ae76d705 Privacy Policy: https://dpbox.notion.site/Privacy-Policy-14dfaae1d9514a2eaf82a9f120c74be0
FocusPuller
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FocusPull 是一款面向影视拍摄现场的专业级 LiDAR 测距与跟焦辅助应用。无论你是独立摄影师、广告导演还是摄影组跟焦员,FocusPull 都能将你的 iPhone 或 iPad 瞬间变成一台高精度跟焦仪,大幅提升拍摄效率与焦点命中率。 ◉ 核心功能 ▸ LiDAR 精密测距 借助 iPhone/iPad Pro 内置的 LiDAR 激光雷达扫描仪,实现 ±1 厘米级实时测距。支持十字准星瞄准、单点触控钉选、多点连续追踪三种测量方式,距离数据经过平滑算法处理,读数稳定可靠。 ▸ 五维深度可视化 不只是枯燥的数字。提供视频热图(Pseudo-Color Heatmap)、示波器(Scope)、雷达图(Radar)、3D 点云(Point Cloud)和直方图(Histogram)五种深度可视化模式,让你直观感知场景的空间纵深。 ▸ 双端协作架构 业内首创 Measure + Monitor 双角色系统。一台设备装夹在摄影机上作为测量端,另一台设备由跟焦员手持作为监看端,通过点对点低延迟连接实时同步画面与距离数据,团队协作更高效。支持 Web 浏览器无插件监看,连网页即可接入。 ▸ AI 语义分割 基于 LiDAR 场景理解能力,自动识别画面中的人物并生成彩色实例描边,悬浮显示每个目标的实时距离。多人物同框时,不同人物以不同颜色区分,焦点切换一目了然。 ▸ 镜头跟焦环 录入镜头焦距、光圈、对焦范围等参数后,FocusPull 自动生成专业跟焦环(Focus Ring),以视觉和触觉反馈标记焦点行程。支持多组镜头预设一键切换,完美适配电影镜头的机械跟焦习惯。 ▸ Sensor Offset 物理校准 当 LiDAR 传感器与镜头焦平面存在物理偏移时,可输入精确的偏移值(支持厘米/英尺双单位),系统自动在全测量通路中统一补偿,确保读数即为焦平面真实距离。 ▸ 电影工业主题 深色专业界面设计,模拟电影监视器风格,低亮度模式下不干扰片场工作环境。距离信息以醒目的 HUD 徽章形式呈现,关键数据一目了然。 ▸ 多语言支持 完整支持中文、English、日本語三种语言,UI 文案根据不同语境的摄影行业术语做了差异化翻译,并非简单机翻。 ◉ 适用场景 - 电影/电视剧拍摄现场的焦点跟焦 - 广告、MV、短视频创作中的景深控制 - 大光圈人像摄影的精确对焦辅助 - 摄影教学中距离判断与景深关系演示 ◉ 订阅说明 FocusPull 提供免费基础测距功能,高级功能(多深度可视化模式、双端协作、Web监看、镜头参数跟焦环等)需通过应用内购买解锁。订阅为自动续期模式,可在 App Store 账户设置中管理或取消。 ◉ 兼容性 需要配备 LiDAR 扫描仪的 iPhone 设备,运行 iOS 17.0 或更高版本。
Screenshots
Verdict
DataCalc by DPBOX and FocusPuller are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. DataCalc by DPBOX sells 1 in-app purchase, starting at $2.99 per year and FocusPuller sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | DataCalc by DPBOX | FocusPuller |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 16 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Gavin Foo | 浩宸 孙 |
In-app purchases
DataCalc by DPBOX
- Annual$2.991 Year
FocusPuller
- FocusPull Pro 月度版$1.991 Month
- FocusPull Pro 年度版$14.991 Year









