# Instinct vs By Then

The clearest difference is in-app purchases: Instinct at none against By Then's 1. Instinct also leads on update cadence (every 5 days vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. By Then sells 1 one-off in-app purchase. Instinct asks for nothing beyond the download.

Instinct ships an update every 5 days, By Then every 6 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Instinct | By Then |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 6 months |
| Monetization | Free | — |
| Size | 2 MB | 6 MB |
| Requires iOS | **18.2** | 18.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jasper Cheyney](https://appshunter.io/developer/1814666512) | [Michael Lysons](https://appshunter.io/developer/469522690) |

## What reviewers say

### Instinct

[App page](https://appshunter.io/ios/app/instinct-reaction-time-tests/id6745971089)

Enhance your reaction time, reflexes, and cognitive speed with engaging, fast-paced games. Track your progress with detailed graphs, compete with friends on global leaderboards, and unlock achievements. Designed for quick daily mental agility training.

**Highlights:** Reaction Speed game, Turbo Tap challenge, Aim Training mode, Unlockable awards, Game Center leaderboards, Progress tracking graphs

**Features:** macOS Compatibility

**In-app purchases:** none


### By Then

[App page](https://appshunter.io/ios/app/by-then/id6748918554)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $5.00 | one-time |


## Frequently asked questions

### Is Instinct free?

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

### Is By Then free?

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

### Do Instinct or By Then have ads?

Neither Instinct nor By Then shows ads.

### Which is updated more often, Instinct or By Then?

Instinct ships an update every 5 days, and By Then every 6 months. Most recently, Instinct was updated on October 7, 2026 and By Then 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.*