PDF翻译 vs iSpacekeeper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF翻译
Translate PDFs while preserving original formatting. Get a standalone translated document or a bilingual side-by-side version. Handles complex layouts, formulas, and images, with batch processing for large files.
- Standalone translated PDF output
- Bilingual side-by-side PDF
- Preserves original layout, formulas, tables
- Batch and large file translation
- Image and scanned document translation
- Background processing with resume
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上传 PDF即刻翻译为成两份:一份纯中文独立翻译,一份左右对照双语版,排版 100% 还原,公式、表格、盖章一个不落。 【痛点终结】 论文/标书/报表全是英文,复制粘贴乱码? 机翻生硬,格式崩成“豆腐渣”? 对照来回翻页,眼睛和脑子一起丢? 【核心亮点】 双文件输出: 独立译文:纯中文 PDF,直接上交、打印、分享。 中英对照:左右分栏,逐句对齐,科研引用、合同审阅一眼定位。 版式“像素级”克隆: 扫描版、双栏、页眉页码、超链接、数学公式、印章签名…全部原位保留。 批量 & 大文件翻译,500 页、200 MB 论文也能后台排队翻译,断点续传,睡一觉全搞定。 图片翻译:支持拍照、扫描文档。 【用户评价】 @科研硕博: “把 58 页 IEEE 双栏 PDF 扔进去,公式编号都在,导师直接通过!” @外贸打工人: “合同双译本 3 分钟出,客户夸我效率翻倍,其实我只点了一下。” @留学党: “对照版写论文引用太香,哪句不会直接复制,再也不怕 Chinglish。” 隐私协议:https://www.termsfeed.com/live/3f9b225e-d781-4286-a682-a7a355129ac2 会员付费协议:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
iSpacekeeper
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iSpaceKeeper – Mobile Phone Storage Manager App Introduction iSpaceKeeper is a practical utility app focused on photo, video, and file management. It helps you free up storage, organize files, and protect your privacy with a clean and easy-to-use interface. With SpaceKeeper, you can quickly analyze storage usage, compress media files, securely manage private content, and check your device status—all in one place. Key Features Smart Scan Quickly analyzes photos, videos, and files to show you exactly how your storage is being used. Image Compression Reduce photo size while keeping good image quality, helping you save space effortlessly. Video Compression Multiple compression modes available to shrink video file sizes while balancing clarity. GIF Compression Optimize GIF file sizes for easier sharing and smoother saving. Live Photo to Still Image Convert Live Photos into static images for easier management and export. File Safe (Private Vault) Protect private photos and videos with a password lock or Face ID, ensuring your personal content stays secure. Device Health Center View detailed device information including storage status, battery level, network status, and system performance. Toolbox A collection of handy utilities to help you manage phone content more efficiently. Privacy Protection At SpaceKeeper, your privacy is our priority: ● All files are stored locally on your device. ● No unauthorized access to your photos, videos, or files. ● We never upload, sell, or share your personal data. ●You can manage or revoke permissions at any time. SpaceKeeper is committed to providing a safe, simple, and efficient mobile storage management experience. Auto-Renewable VIP Subscription Details • Plans: Weekly (7 days), Monthly (30 days), Quarterly (3 months) • Payment: Upon confirmation, the subscription fee will be charged to your Apple ID account • Renewal: Subscriptions automatically renew 24 hours before the current period ends, and your Apple ID will be charged • Cancel: You can turn off auto-renewal at least 24 hours before the current period ends via Settings > [Your Name] > Subscriptions • Trial: If a free trial is offered, any unused portion will be forfeited upon purchasing a subscription Privacy Policy: https://docs.qq.com/doc/DVFV3bGNQZXp1UUdE Terms of Service: https://docs.qq.com/doc/DVHF4dHFXZFdsSWtt
Screenshots
Verdict
The clearest difference is device support: PDF翻译 at 3 against iSpacekeeper's 1. On price, update cadence, ads and in-app purchases 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. PDF翻译 sells 3 in-app purchases, starting at $7.99 per month and iSpacekeeper sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
PDF翻译 ships an update every 3 days, iSpacekeeper every 4 days. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.
| Parameter | PDF翻译 | iSpacekeeper |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 days — better | Every 4 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 11 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Tianjin Junray Technology Co., Ltd. | 元甲 陈 |
In-app purchases
PDF翻译
- 连续包月$7.991 Month
- 单次翻译$0.99
- 永久会员$39.99
iSpacekeeper
- iSpaceKeeper-week$4.997 Days
- iSpaceKeeper.$9.991 Month
- iSpacekeeper.$19.993 Months









