Comparison

Epoch vs Brain Infinity

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

Head to head
About

Epoch

Create interactive timelines to visualize historical events and understand their flow. This app allows for detailed event mapping, filtering, and includes auto-generated practice questions to measure learning outcomes. Users can also share their timelines with others.

Highlights
  • Create interactive timelines
  • Map events from 100 billion BCE to 9999 CE
  • Filter events by flags, tags, and time period
  • Navigate events with horizontal swipes
  • Toggle year display and flags
  • Auto-generated practice questions
  • Share timelines with friends
Features
Read full description

Create your own historical timelines. Epoch is perfect for anyone who wants to organize historical events around a specific theme or study historical dates and chronology. Create Timelines • Color-code events by category 
• Organize related events with tags
 • Add your own mnemonics 
• Add events from 100 billion years ago to the year 9999 Memorize Dates • Study dates with a flashcard-style interface 
• Review events in random order Take Quizzes 
• Answer chronological ordering questions based on events in your timeline
 • Set a time limit for an extra challenge Use Filters 
• Flag events for review
 • Filter events by flags, tags, categories, and date range Share Timelines 
• Share your timeline or collaborate with others using iCloud
 • Export your timeline in CSV (Pro feature)

About

Brain Infinity

Features
Read full description

Math, logic, memory, attention and language in about three minutes. 10-question sessions, 30 levels, 3,000 English and 3,000 Japanese questions, with a brain companion. ■ Reasoning challenges 900 four-choice puzzles in 15 formats across 5 areas. Runs of 10 at Easy, Standard or Hard clear with 5, 7 or 9 correct; 45–120 seconds per question. See guides, clues and explanations, with diagrams for some puzzles. Resume anytime. ■ Training and Action Lab Normal runs mix 7 focus, 2 review and 1 stretch questions, with fewer repeats. Hints give clues; review explains why. Up to two reports per run; offline reports retry later. Action Lab has 10 hands-on formats: numbers, patterns, memory, attention and words. Play 10 untimed puzzles at three difficulties. Progress and bests are saved. Starting and resuming attempts is free. ■ Training builds a colony Build seven colonies, each with six facilities up to Lv.10, using Lumina and Core levels from training. Open rooms, follow flagged goals and meet the crew. Restore 36 areas per colony for journals and the next colony. Command three companies, capture generators and reclaim the core within four minutes. Upgrades strengthen your side; area difficulty is fixed. Practice is free. Expeditions restore equipment without Lumina or XP. ■ Records and community Infinity ends after three mistakes or timeouts. Composite anomaly starts with 45 seconds, extended by correct answers. Rankings show this week, last week and all-time records. You join automatically; your name and new records are public. Opt out in Settings. The Community feed shares your name, bests, streak milestones and main missions. Celebrate milestones. Sharing starts on; turn on Opt out of sharing achievements in Settings to stop new posts. Published posts remain. Sharing, rankings and analytics have separate controls. No free-text posts, images or chat. ■ Review and daily goals The notebook keeps 200 misses from all modes. Filter by category and retry up to 10 pending questions for double Lumina and Core XP per answer. Reviewed entries are read-only. Normal training and challenge runs award 1 Lumina and 10 Brain Core XP per answer, right or wrong; skips, unanswered timeouts and reports do not. Daily missions cover training, reasoning and Action Lab. Finish all three for a calendar mark. Track medals, streaks and all 30 levels. Research Lab shows your Brain Core and Neural Index, an in-game indicator, not a medical or intelligence assessment. Normal questions allow 30 seconds, including time away from the app. A silver medal (80%) unlocks the next level. Bronze 60%, silver 80%, gold 100%. ■ Optional accounts and cloud saves Play without linking an account; progress stays on your device. Link Google or Apple in Settings to save progress, your name and birth year privately in the cloud and restore on another device with the same account. Birth year is not public. If both saves changed, choose one; XP and items are not combined. Purchases and ad/analytics consent are not transferred. Unlink or request account deletion in Settings. Deletion starts removing public data and holds the last cloud save and app account for 30 days before permanent deletion. Cancel with the original account during that period to restore the last cloud save. Public data and unsynced changes are not restored. ■ Display, ads and data VoiceOver, large text, high contrast, reduced motion, effect captions and three music tracks. Set reminders and sound in Settings. A banner appears at the end of Lab. A full-screen ad may appear before results, at most once per five completed runs, never while answering. The optional one-time Remove ads purchase hides both, with no renewal. Every puzzle plays without it; restore with the same store account. Questions work offline. Purchases, ads, rankings, feed, cloud/accounts, reports and analytics need a connection. Analytics runs after the age check while sharing is on; stop it in Settings. See the Privacy Policy.

Screenshots

Epoch4 screens
Brain Infinity4 screens

Verdict

The call

The clearest difference is update cadence: Brain Infinity at every 5 days against Epoch's every 5 weeks. Brain Infinity also leads on iOS requirement (15.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Epoch sells 1 one-off in-app purchase and Brain Infinity sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Epoch ships an update every 5 weeks, Brain Infinity every 5 days. Both last shipped on October 24, 2026.

Scorecard2 real differences · 8 level
Epoch versus Brain Infinity: the parameters behind the verdict, then further details
ParameterEpochBrain Infinity
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews81.8% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.015.0 — better
Further details — not scored
Size4 MB72 MB
Age rating4+4+
DeveloperShu KyogokuYUTA UEDA

In-app purchases

1 purchases

Epoch

One-time1
  • Upgrade to Pro version$7.99
1 purchases

Brain Infinity

One-time1
  • Remove Ads$2.99

Questions

Is Epoch free?
Epoch is free to download, with in-app purchases available.
Is Brain Infinity free?
Brain Infinity is free to download, with in-app purchases available.
Do Epoch or Brain Infinity have ads?
Neither Epoch nor Brain Infinity shows ads.
Which is updated more often, Epoch or Brain Infinity?
Epoch ships an update every 5 weeks, and Brain Infinity every 5 days. Most recently, Epoch was updated on October 24, 2026 and Brain Infinity on October 24, 2026.

Other comparisons