# Spacify vs APP ISIS

The clearest difference is in-app purchases: APP ISIS at none against Spacify's 3. APP ISIS also leads on iOS requirement (9.0 vs 18.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Spacify sells 3 in-app purchases, starting at $2.99 per month. APP ISIS asks for nothing beyond the download.

Spacify ships an update every 3 weeks, APP ISIS fortnightly. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Spacify | APP ISIS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 38 MB | 72 MB |
| Requires iOS | 18.0 | **9.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Denis Semenov](https://appshunter.io/developer/1441647112) | [CLEVER SYSTEM SOLUTIONS SPA](https://appshunter.io/developer/1589489268) |

## What reviewers say

### Spacify

[App page](https://appshunter.io/ios/app/spacify-learn-and-remember/id1441647113)

This app helps you retain information by creating smart flashcards. It uses a scientifically proven spaced repetition algorithm to optimize memorization and offers a minimalist design to minimize distractions. Learn and remember anything, from vocabulary to complex facts, with this efficient study tool.

**Highlights:** Create smart flashcards, Spaced Repetition algorithm, iCloud sync & backup, Minimalist design, Rich text editor, Offline and online functionality

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| 3 Months Subscription | $2.99 | per 3 months |
| Annual Subscription | $19.99 | per year |


### APP ISIS

[App page](https://appshunter.io/ios/app/app-isis/id1598219478)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Spacify free?

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

### Is APP ISIS free?

APP ISIS is free to download, with no in-app purchases.

### Do Spacify or APP ISIS have ads?

Neither Spacify nor APP ISIS shows ads.

### Which is updated more often, Spacify or APP ISIS?

Spacify ships an update every 3 weeks, and APP ISIS fortnightly. Most recently, Spacify was updated on October 10, 2026 and APP ISIS on October 11, 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.*