# SubZen vs CostKeeper

The clearest difference is device support: CostKeeper at 3 against SubZen's 1. CostKeeper also leads on iOS requirement (13.0 vs 16.4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. SubZen sells 6 in-app purchases, starting at $0.99 per month and CostKeeper sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

SubZen ships an update fortnightly, CostKeeper monthly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | SubZen | CostKeeper |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/subzen-subscription-tracker/id6759507520/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 65 MB | 26 MB |
| Requires iOS | 16.4 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Abou Khalil](https://appshunter.io/developer/1829498538) | [思宇 周](https://appshunter.io/developer/1892689822) |

## What reviewers say

### SubZen

[App page](https://appshunter.io/ios/app/subzen-subscription-tracker/id6759507520)

Effortlessly track all your recurring payments in one place. Get timely reminders before charges hit, understand your spending habits, and manage subscriptions across different currencies. All your data stays private on your device.

**Highlights:** Track all subscriptions in one place, Receive renewal reminders, Analyze recurring spending, Plan renewals with calendar view, Support for multiple currencies, Import and export subscription data, Manage subscription status (pause, cancel, delete)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SubZen Pro | $0.99 | per month |
| Support SubZen - Small | $1.99 | one-time |
| Support SubZen - Kind | $2.99 | one-time |
| Support SubZen - Generous | $5.99 | one-time |
| Support SubZen - Big | $10.99 | one-time |
| Support SubZen - Amazing | $19.99 | one-time |


### CostKeeper

[App page](https://appshunter.io/ios/app/costkeeper-daily-cost-tracker/id6762183783)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $1.99 | per month |
| Semi-Annual Plan | $9.99 | per 6 months |
| Annual Plan | $17.99 | per year |


## Frequently asked questions

### Is SubZen free?

SubZen is free to download, with in-app purchases available.

### Is CostKeeper free?

CostKeeper is free to download, with in-app purchases available.

### Do SubZen or CostKeeper have ads?

Neither SubZen nor CostKeeper shows ads.

### Which is updated more often, SubZen or CostKeeper?

SubZen ships an update fortnightly, and CostKeeper monthly. Most recently, SubZen was updated on October 28, 2026 and CostKeeper on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*