Comparison

Instinct vs By Then

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

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.

Highlights
  • Reaction Speed game
  • Turbo Tap challenge
  • Aim Training mode
  • Unlockable awards
  • Game Center leaderboards
  • Progress tracking graphs
Features
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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

About

By Then

Features
Read full description

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

Instinct4 screens
By Then4 screens

Verdict

The call

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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

UpkeepUpdate frequency

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.

Scorecard2 real differences Β· 6 level
Instinct versus By Then: the parameters behind the verdict, then further details
ParameterInstinctBy Then
PriceFreeFree
Positive reviews100.0% of reviewsβ€”
Update frequencyEvery 5 days β€” betterEvery 6 months
AdsNoNo
In-app purchasesNo β€” betterYes
MonetizationFreeβ€”
DevicesiPhone, iPad β€” betteriPhone
Requires iOS18.2 β€” better18.5
Further details β€” not scored
Size2 MB6 MB
Age rating4+4+
DeveloperJasper CheyneyMichael Lysons

In-app purchases

None

Instinct

No in-app purchases

1 purchases

By Then

One-time1
  • Unlock all features$5.00

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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