FastlyCal vs SubZen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FastlyCal
This lightweight finance app helps you organize recurring payments without unnecessary features. It provides a clean dashboard for monthly spending, payment reminders, and currency support, all while being fast and offline-friendly.
- Organize recurring payments
- Monthly spending overview
- Payment due reminders
- Support for all billing cycles and currencies
- Offline functionality
- Tiny app size
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The lightweight subscription tracker that just works! FastlyCal keeps your recurring payments organized without the bloat. Lightning Fast & Lightweight • Tiny app size with zero bloat • Instant startup and smooth performance • No account required - works offline • Built with native iOS technologies only Essential Features Only • Clean dashboard with monthly spending overview • Reminders before payments are due • Simple toggle to pause unused subscriptions • Support for all billing cycles and currencies Focused & Simple • No complex features you'll never use • No ads, tracking, or subscription required • Just the essentials: track, remind, save money • Perfect for users who want simplicity Why choose a heavyweight subscription manager when FastlyCal gives you everything you need in a tiny, package - Download now to get your subscriptions sorted!
SubZen
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SubZen is the subscription tracker for people who want to know what renews, when it renews, and how much it costs—without linking a bank account or creating another account. No account. No bank link. Free, always. See upcoming renewals, understand your spending, move through billing weeks, and manage every subscription from a clean interface built for iPhone. KEY FEATURES - Track every subscription in one place Add streaming services, apps, software, memberships, cloud storage, news, fitness, gaming, and any other recurring payment. Keep costs, billing dates, categories, notes, tags, and payment labels organized. - Get reminders before charges hit Choose a reminder for the same day, 1 day, 3 days, or 1 week before renewal. See upcoming payments before they surprise you. - Understand your recurring spending View monthly and yearly totals, compare categories, explore your biggest commitments, and see how each subscription contributes to your spending. - Plan renewals with Calendar See which subscriptions renew each day and move through upcoming billing weeks without losing sight of recent renewals. - Track subscriptions in any currency Use USD, EUR, GBP, CAD, AUD, JPY, and many more. SubZen converts recurring costs into your preferred currency using current exchange rates, with offline fallback rates when needed. - Import and export your data Bring subscriptions into SubZen from CSV or JSON, review changes before saving, and export a portable copy whenever you want. - Pause, resume, cancel, or delete Pause or cancel a subscription without removing its history, or delete it entirely when you no longer need it. - Private by design Your subscription records stay on your device. Optional iCloud backup syncs them through your own Apple account. No SubZen account required. - Add subscriptions faster Browse an expanded service catalog with recognizable logos, search popular services, or create a completely custom subscription. WHY SUBZEN SubZen focuses on one job: helping you understand and manage subscriptions without a bank connection or complicated budgeting system. Use SubZen to: - Know what renews next - Track monthly and yearly costs - Plan around upcoming charges - Organize subscriptions across currencies - Keep a portable copy of your data - See spending insights without the clutter Download SubZen and finally know what you are paying for. Terms of Use: https://subzenapp.netlify.app/terms Privacy Policy: https://subzenapp.netlify.app/privacy-policy
Screenshots
Verdict
The clearest difference is in-app purchases: FastlyCal at none against SubZen's 6. FastlyCal also leads on update cadence (every 3 days vs fortnightly). SubZen's advantage is iOS requirement (16.4 vs 18.0). 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. SubZen sells 6 in-app purchases, starting at $0.99 per month. FastlyCal asks for nothing beyond the download.
FastlyCal ships an update every 3 days, SubZen fortnightly. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.
| Parameter | FastlyCal | SubZen |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 5 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Anzah Khan | Michael Abou Khalil |
In-app purchases
FastlyCal
No in-app purchases
SubZen
- SubZen Pro$0.991 Month
- Support SubZen - Small$1.99
- Support SubZen - Kind$2.99
- Support SubZen - Generous$5.99
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- Support SubZen - Big$10.99
- Support SubZen - Amazing$19.99









