Comparison

RoboTou Stacker vs 影犀

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

RoboTou Stacker

Combine multiple photos directly on your device for enhanced results. This app offers automatic masking and alignment for various photography needs, including starry skies and light trails. Process your images locally without needing an account or cloud sync.

Highlights
  • On-device image stacking
  • Automatic masking and alignment
  • Starry sky stacking
  • Star trail stacking
  • Car-light trail stacking
  • Local preview generation
  • Export to Photos
Features
Read full description

Bring image stacking and AI star removal to your iPhone and iPad. RoboTou Stacker gives night-sky and landscape photographers practical tools for processing photos directly on their devices. Import images from Photos, Files, or a folder, choose a processing mode, preview the result, and save it back to Photos. Image processing runs locally, with no account registration or photo uploads required. CHOOSE YOUR WORKFLOW • Starry Sky Stack: Automatically generate a sky mask, align the stars, and process the sky and foreground separately. • Landscape Stack: Combine multiple photos of a static scene captured from a fixed position. • Star & Light Trails Stack: Use maximum-value stacking to combine star trails and vehicle light trails. • Star Trail Pro: Stack up to 100 images with a fade-enhanced workflow. • AI Star Removal: Process a single image on your device to create a starless image for further sky-background editing. OUTPUT YOUR WAY Choose a 4K or 1080p output preset while preserving the original aspect ratio. Smaller source images retain their original resolution. Both stacking and AI Star Removal follow your in-app resolution setting. MADE FOR YOUR DEVICE Switch between English and Chinese. Layouts optimized for the unfolded iPhone Duo display make better use of screen space across Home, mode selection, importing, and Settings. FREE FEATURES AND ROBOTOU PRO Landscape Stack and basic Star & Light Trails Stack are free. Starry Sky Stack, Star Trail Pro, and AI Star Removal require RoboTou Pro, available as an auto-renewing annual subscription or a one-time lifetime purchase. Manage or cancel subscriptions in your Apple ID settings. Privacy Policy: https://www.robotou.cn/robotou-stacker-ios-privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

影犀

Features
Read full description

影犀是一款面向摄影爱好者与专业创作者的相机连接和照片管理工具。 通过支持的 USB 或 Wi‑Fi 连接,你可以在 iPhone 或 iPad 上查看相机照片、预览拍摄内容,并将照片同步到本地,减少反复插拔存储卡和手动整理文件的步骤。 声明:影犀为第三方软件采用Nikon已知公开技术协议开发。与 Nikon及其他相机品牌不存在隶属或官方合作关系。相关商标归其各自所有者所有。 主要功能: • 相机连接 通过 USB 或 无线 连接部分受支持的 Nikon相机。实际可用功能取决于相机型号、固件版本和连接方式。 • 实时取景与远程控制 在支持的相机上查看实时画面,调整常用拍摄参数、选择对焦位置并执行拍摄操作。 • 浏览相机照片 直接查看相机存储卡中的照片和缩略图,支持分页加载、日期筛选和多选操作。 • RAW 与 JPEG 支持 识别并管理 RAW、JPEG、HEIC 等常见照片格式,支持浏览 RAW 文件中的可用预览图。 • 照片同步 将选中的照片从相机传输到设备,查看同步进度并管理本地照片。 • 色彩预览 导入和选择 LUT 色彩方案,为支持的照片和实时画面提供创意预览。 • 本地照片管理 集中查看已经同步到设备的照片,方便后续整理、预览和分享。 兼容性说明: 不同相机的 USB、Wi‑Fi、实时取景、远程控制和文件传输能力可能不同。使用前请确认相机已启用对应的 USB/PTP/MTP 或无线连接模式。

Screenshots

RoboTou Stacker4 screens
影犀4 screens

Verdict

The call

The clearest difference is iOS requirement: 影犀 at 15.2 against RoboTou Stacker's 17.0. On price, review sentiment, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. RoboTou Stacker sells 2 in-app purchases, starting at $7.99 per year and 影犀 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard1 real difference · 9 level
RoboTou Stacker versus 影犀: the parameters behind the verdict, then further details
ParameterRoboTou Stacker影犀
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews — better92.3% of reviews
Number of ratings1 — better—
Update frequencyEvery 5 daysEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.2 — better
Further details — not scored
Size88 MB119 MB
Age rating4+9+
Developer振国 吴怡婷 王

Customer experience

RoboTou Stacker

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

影犀

Written reviews13 reviews
Positive92.3%
Neutral0.0%
Negative7.7%

In-app purchases

2 purchases

RoboTou Stacker

Subscriptions1
  • RoboTou Stacker Pro Annual$7.991 Year
One-time1
  • RoboTou Stacker Pro Lifetime$39.99
1 purchases

影犀

One-time1
  • camera sync pro$4.99

Questions

Is RoboTou Stacker free?
RoboTou Stacker is free to download, with in-app purchases available.
Is 影犀 free?
影犀 is free to download, with in-app purchases available.
Do RoboTou Stacker or 影犀 have ads?
Neither RoboTou Stacker nor 影犀 shows ads.
Which is updated more often, RoboTou Stacker or 影犀?
RoboTou Stacker ships an update every 5 days, and 影犀 every 5 days. Most recently, RoboTou Stacker was updated on October 25, 2026 and 影犀 on October 28, 2026.

Other comparisons