Instinct vs By Then
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Instinct
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.
- Reaction Speed game
- Turbo Tap challenge
- Aim Training mode
- Unlockable awards
- Game Center leaderboards
- Progress tracking graphs
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Instinct improves your reaction time, reflexes, speed, and awareness through engaging, fast-paced cognitive games designed for all skill levels. Track your progress with interactive graphs, compete with friends, and climb the global leaderboards to claim the top spot. Designed for quick daily sessions, Instinct is built on scientifically inspired exercises for mental agility. Features: β’ Reaction Speed - Tap as quickly as possible when the background changes β’ Turbo Tap - Tap rapidly to score as many points as you can in 10 seconds β’ Aim Training -Β Tap targets before they disappear, miss one, and you lose a life β’ Unlockable awards that will challenge your skills, can you earn them all? (Plus one hidden award) β’ Game Center integration for seamless leaderboards and achievements β’ No ads or distractions
By Then
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A weight gain/loss calculator for people who have weight goals they want to achieve. If you need to gain weight or lose weight, By Then will tell you what you need to do to achieve that goal. Simply enter your current weight and target weight, and then either a weekly weight change you can commit to or a target date, and By Then will calculate the rest. The widgets allow you to perform the calculations right on your Home Screen for added convenience. A one-off purchase unlocks the weekly weight-change projections view and a number of themes to personalise the app. Simple, focused, to the point; you'll know where you need to be, By Then.
Screenshots
Verdict
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.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
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.
| Parameter | Instinct | By Then |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 5 days β better | Every 6 months |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Monetization | Free | β |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 18.2 β better | 18.5 |
| Further details β not scored | ||
| Size | 2 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Jasper Cheyney | Michael Lysons |
In-app purchases
Instinct
No in-app purchases
By Then
- Unlock all features$5.00









