GainLens vs DueCat
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GainLens
Read full descriptionHide full description
GainLens 是為投資人打造的本機優先投資組合追蹤工具。自行輸入交易,即可集中查看台股、美股、加密貨幣、基金、現金、融資部位,以及台灣指數期貨與選擇權。 主要功能: • 記錄買進、賣出、拆股、入金與出金 • 查看平均成本、淨成本、已實現與未實現損益 • 追蹤今日、本月與今年的投資績效 • 透過績效曲線與資產配置掌握投資組合 • 建立無上限的定期投資計畫 • 支援資料備份、還原與匯出 • 自訂交易費用、證交稅與匯率設定 方案內容: • Free:支援台股、美股與加密貨幣,最多 5 個有效標的,使用各市場每日收盤資料 • Plus:增加基金、無上限有效標的與隨時手動更新 • Pro:再增加權證、融資、期貨與選擇權功能 GainLens 採本機優先設計。交易紀錄、持倉數量、成本及投資組合資料儲存在你的裝置上。行情查詢只會傳送市場、商品代號或基金代碼等必要欄位。 GainLens 不連結券商帳戶、不代為下單,也不提供投資建議。 使用條款(Apple 標準 EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
DueCat
This app helps you manage your recurring bills and subscriptions by providing a clear overview of upcoming payments. Understand your spending habits with visual dashboards and get timely reminders to avoid missed renewals.
- Subscription and bill tracking
- Upcoming payment dashboard
- Monthly budget setting
- Spending trend analysis
- Renewal reminders
- Custom organization
- iCloud sync
Read full descriptionHide full description
Know what’s due before it’s charged. DueCat brings subscriptions and one-time bills together in a calm, visual dashboard. See upcoming payments at a glance, browse charges by date, and understand where your money is going. STAY AHEAD OF EVERY PAYMENT • Set a monthly budget and see what’s spent, still due, and remaining after this month’s bills • Track recurring subscriptions and one-time bills • View upcoming charges on a monthly calendar • See monthly averages, due totals, and payment dates • Pause or cancel tracking while keeping your records UNDERSTAND YOUR SPENDING • Review scheduled spending by month and year • Explore trends and category breakdowns • Identify subscriptions worth reviewing • Watch price changes get logged automatically the moment they happen. MAKE DUECAT YOURS • Organise subscriptions with lists and categories • Choose from a collection of built-in backgrounds • Add custom background photos with DueCat Pro • Keep your data in sync with iCloud NEVER MISS A RENEWAL • Set renewal reminders • Choose your preferred reminder time • Check upcoming payments from Home Screen widgets Start free with up to five subscriptions and iCloud sync. Unlock DueCat Pro with a one-time lifetime purchase for unlimited subscriptions, analytics, reminders, custom organisation, custom backgrounds, and widgets. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Screenshots
Verdict
The clearest difference is in-app purchases: GainLens at none against DueCat's 1. GainLens also leads on iOS requirement (16.4 vs 26.6). DueCat's advantage is update cadence (every 5 days vs fortnightly). On price, ads 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. DueCat sells 1 one-off in-app purchase. GainLens asks for nothing beyond the download.
GainLens ships an update fortnightly, DueCat every 5 days. The most recent releases landed on November 5, 2026 and November 7, 2026 respectively.
| Parameter | GainLens | DueCat |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Freemium |
| Devices | iPhone | iPhone |
| Requires iOS | 16.4 — better | 26.6 |
| Further details — not scored | ||
| Size | 35 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Po Jen Ko | Ooi Way Min |
In-app purchases
GainLens
No in-app purchases
DueCat
- DueCat Pro - Lifetime$7.99








