SubZen vs CostCurve
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
CostCurve
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Know what ownership really cost. CostCurve turns purchases into an honest record of price, use, time, and what happened next - without mixing unlike currencies or flattening everything into one score. BUILD YOUR COLLECTION - Record price, purchase date, category, notes, and an optional target cost per use. - Log every use and watch cost per use change over time. - Keep currencies separate so the numbers stay meaningful. - See best value, neglected items, and collection-level trends. MAKE BETTER OWNERSHIP DECISIONS - Pause before a new purchase and write down the real need. - Mark an item kept, sold, retired, or replaced. - Add resale value and see net ownership cost. - Keep a decision note so the context is not lost. FREE - Track up to five active items. - Log unlimited uses. - Try one Purchase Pause decision. COSTCURVE PRO - Unlimited items and Purchase Pause decisions. - Read item names and prices from receipts on device. - Full sold, retired, replacement, and resale lifecycle tools. - Deeper insights, goals, sharing, and CSV export. Receipt reading uses Apple's on-device Vision framework. CostCurve does not send receipts or item details to an AI service. Your collection is stored locally and can sync through your private iCloud account when available. Subscriptions renew automatically unless canceled in your Apple ID settings. Restore an existing purchase from Settings > Restore Purchases. TERMS OF USE Product Terms of Use: https://www.uncommonweather.com/legal/apps/costcurve-terms.html Apple Standard Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: SubZen at 16.4 against CostCurve's 18.0. 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. SubZen sells 6 in-app purchases, starting at $0.99 per month and CostCurve sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 24, 2026 and October 8, 2026 respectively.
| Parameter | SubZen | CostCurve |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 65 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Abou Khalil | Ryan Tinklepaugh |
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
CostCurve
- CostCurve Pro Monthly$3.991 Month
- CostCurve Pro Annual$29.991 Year









