# Spaced Repetition Tracker vs FlashFlex

The clearest difference is update cadence: Spaced Repetition Tracker at fortnightly against FlashFlex's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Spaced Repetition Tracker sells 4 in-app purchases, starting at $5.99 per month and FlashFlex sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Spaced Repetition Tracker ships an update fortnightly, FlashFlex every 3 months. The most recent releases landed on September 19, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Spaced Repetition Tracker | FlashFlex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/spaced-repetition-tracker/id6478831271/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 92.9% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 75 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Alessandro Pace](https://appshunter.io/developer/1635839308) | [Zhuoyao lu](https://appshunter.io/developer/894406093) |

## What reviewers say

### Spaced Repetition Tracker

[App page](https://appshunter.io/ios/app/spaced-repetition-tracker/id6478831271)

This app helps you retain more information from your study sessions. Log your study time, rate the difficulty of material, and utilize spaced repetition for effective review. Organize your learning by subject and track your progress to build a consistent study habit.

**Highlights:** Organize topics by subject, Log study sessions quickly, Rate difficulty after study blocks, Track progress and consistency, Review with spaced repetition

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Yearly | $29.99 | per year |
| Unlimited Access (Family) | $34.99 | one-time |
| Unlimited Access | $49.99 | one-time |


### FlashFlex

[App page](https://appshunter.io/ios/app/flashflex/id6502081911)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Yearly Subscription | $19.99 | per year |


## Frequently asked questions

### Is Spaced Repetition Tracker free?

Spaced Repetition Tracker is free to download, with in-app purchases available.

### Is FlashFlex free?

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

### Do Spaced Repetition Tracker or FlashFlex have ads?

Neither Spaced Repetition Tracker nor FlashFlex shows ads.

### Which is updated more often, Spaced Repetition Tracker or FlashFlex?

Spaced Repetition Tracker ships an update fortnightly, and FlashFlex every 3 months. Most recently, Spaced Repetition Tracker was updated on September 19, 2026 and FlashFlex on September 17, 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.*