Comparison

1/2 one vs 1/8192

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

Head to head
About

1/2 one

Test your luck and strategy in this simple guessing game. Aim for consecutive correct answers with a 50/50 chance, and track your progress. You get one chance to redo a selection per streak.

Highlights
  • 50/50 guessing mechanic
  • Consecutive correct answer tracking
  • Single redo per streak
  • Probability display
  • Simple L/R choices
Features
Read full description

Keep picking 1/2 and chase the odds that almost never happen! A simple game: how many times in a row can you call a 50/50 correctly? ■ How to play ・Pick one of two: "L" or "R" ・On a hit, the probability of your streak so far is shown (1/2 → 1/4 → 1/8 …) ・On a miss, the streak goes into RECORDS and you start over ・Once per streak you can watch an ad to redo your choice (the answer is drawn again). Redo can be switched ON / OFF ■ Records ・RECORDS: how many times you reached each streak, and your total runs ・HISTORY: the winning side of your last 13 picks ■ Version 2.0.0 (complete remake) ・Rebuilt from the ground up with a new design ・Added hit / miss effects and haptic feedback ・After a miss, your last streak stays readable ・Redo is only offered when an ad is ready ・Supports iPad and larger text sizes ・Your existing records carry over This app shows ads (banner, interstitial and rewarded). Terms of Use: https://www.gravass.co.jp/apps/terms/ Privacy Policy: https://www.gravass.co.jp/apps/privacy/

About

1/8192

Test your luck in a game of chance where you must pass through randomly assigned gates. Succeed 13 times in a row to reach the ultimate goal. The game's duration is determined solely by your luck.

Highlights
  • Randomly assigned win/lose gates
  • Progress through stages by choosing gates
  • Return to stage one on a wrong choice
  • Achieve Nirvana by succeeding 13 times
  • Luck-based progression
Read full description

Playtime 1 min to infinity: It's all up to your luck Basic Gameplay Each stage has a blue and a green gate. The gates are randomly set as "win" or "lose" each time. Players progress based on the gate they choose. Winning gate: Proceed to the next stage Losing gate: Return to the first stage Achieve Nirvana by succeeding at a 50/50 chance 13 times in a row.

Screenshots

1/2 one4 screens
1/81924 screens

Verdict

The call

The clearest difference is price: 1/2 one at Free against 1/8192's $1.99. 1/2 one also leads on review sentiment (50% vs 27%). 1/8192's advantage is ads (none vs shown) and update cadence (every 9 days vs every 2 months). On in-app purchases, device support and iOS requirement 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

1/2 one is free to download; 1/8192 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

1/2 one ships an update every 2 months, 1/8192 every 9 days. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 3 level
1/2 one versus 1/8192: the parameters behind the verdict, then further details
Parameter1/2 one1/8192
PriceFree — better$1.99
Positive reviews50.0% of reviews — better27.5% of reviews
Update frequencyEvery 2 monthsEvery 9 days — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.415.0 — better
Further details — not scored
Size49 MB1.1 GB
Age rating9+9+
Developergravass, Inc.Yoshifumi Uzawa

Customer experience

1/2 one

Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

1/8192

Written reviews51 reviews
Positive27.5%
Neutral9.8%
Negative62.7%

Bugs and requests

1/2 one

Not enough reviews yet to summarise bugs or requests.

1/8192

Reported bugs

7 issues
  • Achievements not saving
  • App crashes on launch
  • App opens to a black screen
  • Game data is lost
  • Controls reset after passing through gates
Show 2 more
  • Camera shifts unexpectedly after passing gates
  • Achievement progress resets

Requested features

5 requests
  • Fix app launch issues on iOS 26
  • Improve control responsiveness
  • Fix camera movement issues
  • Save game progress reliably
  • Add confirmation for score reset

In-app purchases

None

1/2 one

No in-app purchases

None

1/8192

No in-app purchases

Questions

Is 1/2 one free?
1/2 one is free to download, with no in-app purchases.
Is 1/8192 free?
1/8192 costs $1.99, with no in-app purchases.
Do 1/2 one or 1/8192 have ads?
1/2 one shows ads; 1/8192 does not.
Which is updated more often, 1/2 one or 1/8192?
1/2 one ships an update every 2 months, and 1/8192 every 9 days. Most recently, 1/2 one was updated on October 2, 2026 and 1/8192 on October 15, 2026.

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