# Seismic tracker vs Spaced.

The clearest difference is in-app purchases: Seismic tracker at none against Spaced.'s 2. Seismic tracker also leads on update cadence (every 2 weeks vs every 5 months). Spaced.'s advantage is iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Spaced. sells 2 one-off in-app purchases. Seismic tracker asks for nothing beyond the download.

Seismic tracker ships an update every 2 weeks, Spaced. every 5 months. The most recent releases landed on October 12, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Seismic tracker | Spaced. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spaced/id6762540303/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | — | Free |
| Size | 67 MB | 6 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Raphael Lesourd](https://appshunter.io/developer/981244692) | [Clement Boissiere](https://appshunter.io/developer/1696386692) |

## What reviewers say

### Seismic tracker

[App page](https://appshunter.io/ios/app/seismic-tracker/id6740165946)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### Spaced.

[App page](https://appshunter.io/ios/app/spaced/id6762540303)

This minimalist flashcard app helps you remember information through spaced repetition. Create custom decks with text, images, or audio, and review efficiently by focusing on what you need to learn. It's designed for privacy with no ads or tracking.

**Highlights:** Spaced repetition learning, Customizable decks, Text, image, and audio cards, AI-assisted deck creation, Starter decks included, Private by design, no ads or tracking

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $4.99 | one-time |
| Large Tip | $9.99 | one-time |


## Frequently asked questions

### Is Seismic tracker free?

Seismic tracker is free to download, with no in-app purchases.

### Is Spaced. free?

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

### Do Seismic tracker or Spaced. have ads?

Neither Seismic tracker nor Spaced. shows ads.

### Which is updated more often, Seismic tracker or Spaced.?

Seismic tracker ships an update every 2 weeks, and Spaced. every 5 months. Most recently, Seismic tracker was updated on October 12, 2026 and Spaced. on October 8, 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.*