SubSum vs iFocuspace
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SubSum
Read full descriptionHide full description
核心功能 - 多币种支持: 支持CNY、USD、HKD、JPY、EUR、GBP、AUD、CAD等8种货币 - 费用汇总: 自动计算各币种的月均和年总费用 - 临期提醒: 提前1/3/7/14天本地通知提醒 - 完全离线: 所有数据仅存储在本地设备，保护隐私 用户界面 - 单页面设计: Dashboard + Add Sheet + Settings Sheet - 汇总卡片: 动态显示各币种的月均和年总费用 - 即将扣费: 显示未来30天内即将扣费的订阅 - 全部订阅: 按扣费日期排序的完整订阅列表 便捷功能 - 预设模板: 30+常用服务模板，快速添加订阅 - 分类管理: 7大分类（流媒体、音乐、生产力、游戏、云服务、教育、其他） - 自定义设置: 通知时间、主题模式等个性化设置
iFocuspace
Transform web content into a paper-like reading experience on E-Ink devices. Enjoy focused reading, study, and writing with features like one-tap casting, reverse touch controls, and customizable display options. All operations are performed locally for enhanced privacy.
- Cast web content to E-Ink devices
- Add any URL as a web app
- Reverse touch controls on E-Ink screen
- Customizable font size and tap zones
- Local data processing for privacy
Read full descriptionHide full description
iFocuspace 让你把任何网页内容投屏到 E-Ink 墨水屏阅读设备, 享受纸质般的专注阅读体验。 主要特性: • 一键投屏到 EDCBook / m5paper-s3 等支持的墨水屏设备 • 自定义网页应用,任意 URL 加入应用列表 • 反向触控:在墨水屏上直接翻页、点击 • 字体缩放 / 翻页区域可自定义 适合长时间阅读、学习、写作场景。 关于隐私: iFocuspace 不收集任何用户数据,所有操作均在本地完成。 完整隐私政策见 keychar.com/privacy.html。 iFocuspace casts any web content to E-Ink reading displays for a paper-like focused reading experience. Key features: • One-tap casting to EDCBook / m5paper-s3 e-ink devices • Add any URL as a web app — works with WeChat Read, Readest, and other reading sites • Reverse touch: turn pages and tap directly on the e-ink screen • Customizable font size, scale, and tap-to-turn zones • Screen stays on during casting — just place the phone on your desk for uninterrupted reading Suitable for long reading sessions, study, and writing. Compatible hardware at keychar.com. Privacy: iFocuspace collects no user data. Everything runs locally. Full privacy policy at keychar.com/privacy.html.
Screenshots
Verdict
The clearest difference is update cadence: iFocuspace at every 3 days against SubSum's every 4 months. On price, ads, 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.
SubSum ships an update every 4 months, iFocuspace every 3 days. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.
| Parameter | SubSum | iFocuspace |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17 | 16.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 17+ |
| Developer | 桥 汪 | Chuchen Technology (Xiamen) Co., Ltd |
In-app purchases
SubSum
No in-app purchases
iFocuspace
No in-app purchases
