# Subscription Day. Calendar vs CardStack

The clearest difference is monetization model: Subscription Day. Calendar at free against CardStack's freemium. Subscription Day. Calendar also leads on rating (4.8 vs 4.5). CardStack's advantage is chart position (#188 vs unranked) and review sentiment (94% vs 84%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Subscription Day. Calendar sells 5 one-off in-app purchases and CardStack sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Subscription Day. Calendar holds the better App Store score, 4.8 against 4.5. Both are backed by a comparable volume of ratings — 19 and 53 respectively. Written reviews complicate that: 84% of Subscription Day. Calendar's written reviews are positive against 94% of CardStack's, so the app with the better star average is not the one people write more warmly about.

Subscription Day. Calendar ships an update weekly, CardStack every 2 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Subscription Day. Calendar | CardStack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (19 ratings)](https://appshunter.io/ios/app/subscription-day-calendar/id6743316600/reviews)** | [4.5 (53 ratings)](https://appshunter.io/ios/app/cardstack-credit-card-tracker/id6759270863/reviews) |
| Number of ratings | 19 | **53** |
| Positive reviews | 83.7% of reviews | **94.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | **Free** | Freemium |
| Best chart rank | — | **#188** |
| Size | 21 MB | 259 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chuta Dmytro](https://appshunter.io/developer/1792181039) | [SPACE ROBOTS INC](https://appshunter.io/developer/1877786048) |

## What reviewers say

### Subscription Day. Calendar

[App page](https://appshunter.io/ios/app/subscription-day-calendar/id6743316600)

Manage your paid subscriptions and avoid unexpected charges with this intuitive calendar app. Track monthly, yearly, and trial plans with smart notifications and detailed insights into your spending.

**Highlights:** Visual subscription calendar, Home screen widgets, Multiple subscription types, Smart payment reminders, Spending statistics and insights, Personal and work lists, Multi-currency support, iCloud sync

**Features:** Family Sharing, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Family | $6.99 | one-time |
| Single (Promo) | $17.99 | one-time |
| Single (Lifetime) | $19.99 | one-time |
| Family (Promo) | $23.99 | one-time |
| Family Sharing (Lifetime) | $26.99 | one-time |


### CardStack

[App page](https://appshunter.io/ios/app/cardstack-credit-card-tracker/id6759270863)

**Currently charting:** #188 Top Grossing · Finance (US App Store)

This app helps you maximize rewards and savings from your credit cards. It tracks perks, statement credits, and points, offering AI-powered advice to ensure your cards always pay you back more than they cost. Get personalized recommendations and automated offer management.

**Highlights:** Maximize cashback and offers, Track statement credits automatically, Redeem points at peak value, AI agent for personalized advice, See which card earns the most, Track points portfolio, Annual fee advisor

**Features:** macOS Compatibility, Safari Extension, Apple Wallet, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CardStack+ | $12.99 | per month |
| CardStack+ | $89.99 | per year |
| CardStack+ Lifetime | $239.99 | one-time |


## Frequently asked questions

### Is Subscription Day. Calendar free?

Subscription Day. Calendar is free to download, with in-app purchases available.

### Is CardStack free?

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

### Which has better reviews, Subscription Day. Calendar or CardStack?

Subscription Day. Calendar is rated higher. Subscription Day. Calendar averages 4.8 out of 5 from 19 ratings, while CardStack averages 4.5 from 53 ratings.

### Do Subscription Day. Calendar or CardStack have ads?

Neither Subscription Day. Calendar nor CardStack shows ads.

### Which is updated more often, Subscription Day. Calendar or CardStack?

Subscription Day. Calendar ships an update weekly, and CardStack every 2 weeks. Most recently, Subscription Day. Calendar was updated on October 30, 2026 and CardStack on November 5, 2026.

---

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