# Leap37 — Know when to stop & choose > Decision-making assistant applying the 37% rule for optimal choices. (iPhone/iPad app by Andrey Lee Tsyplakov.) - Source: https://appshunter.io/ios/app/leap37/id6776419609 (this page in markdown: same URL + `.md`) - Developer: [Andrey Lee Tsyplakov](https://appshunter.io/developer/1896742109) - Category: Productivity, Lifestyle - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 8 MB - Languages: American English - Released: 2026-06-08 - Data updated: 2026-08-19 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/leap37/id6776419609/reviews.md ## What is Leap37? Some choices come at you one at a time — apartments, job candidates, used cars, even dates — and once you pass on one, it's usually gone. Search too little and you settle; search too long and the best option slips away. Leap37 solves this with a result from mathematics called the 37% rule (the "secretary problem"). THE RULE, MADE SIMPLE Look at the first ~37% of your options without committing — just learn the field. Then leap: commit to the first option that beats everything you saw while looking. That strategy gives you the mathematically best shot — about a 37% chance — at landing the single best option. WHAT'S INSIDE • Calculator — Enter how many options you'll see, or a time horizon (days, weeks, months, years), and instantly get your look/leap split. • Decisions — Track real options as you go. Leap37 sets your benchmark from the looking phase and tells you the moment you should commit. • Templates — 25+ ready-made scenarios across home, career, business, dating, shopping, travel, and services. Tap one to start in seconds. • Time horizons — Some decisions play out over years, not items. "Dating for 20 years" → explore for the first ~7.4 years, then commit. Leap37 does the math. • Learn — Plain-English explanation of why 37%, when it applies, and how the same idea works for any variable: time, number of options, money spent, distance traveled, interviews, deals, and more. • Optional cloud sync — Sign in with Apple or Google to back up your decisions and keep them in sync across your iPhone and iPad. Totally optional. PRIVACY FIRST Leap37 works without an account and keeps your decisions on your device. Signing in (Apple or Google) is optional — if you do, your decisions sync across your devices and back up to the cloud, and you can delete your account and that data anytime. Leap37 is free and supported by non-personalized ads (Google AdMob); we don't use other analytics and don't track you across other apps. Read the full Privacy Policy at https://leetsyplakov.github.io/Leap37-policies/privacy.html. Leap37 is an independent app and offers general decision-making guidance only — not professional, financial, legal, or medical advice. ## Key features - 37% rule calculator - Decision tracking - Pre-made scenario templates - Time horizon calculations - Learn about decision theory - Optional cloud sync ## Frequently asked questions about Leap37 ### How does Leap37 help with decision making? Leap37 applies the 37% rule, a mathematical strategy, to help you find the best option when faced with multiple choices. It guides you on when to observe options and when to commit to one. ### What are the templates in Leap37? Leap37 includes over 25 ready-made templates for common decision scenarios like home buying, career changes, dating, and shopping. These templates help you quickly set up your decision-making process. ### Can Leap37 be used for long-term decisions? Yes, Leap37 supports time horizons, allowing you to apply the 37% rule to decisions that span years, not just a limited number of options. It calculates the appropriate look/leap split based on your specified time frame. ### Does Leap37 require an account? No, Leap37 works without an account and keeps your decisions on your device. Optional sign-in with Apple or Google is available for cloud sync and backup across your iPhone and iPad. ### Does Leap37 have ads? Yes, Leap37 contains non-personalized advertisements from Google AdMob. The developers prioritize privacy and do not use other analytics or track users across apps. ### What devices does Leap37 support? Leap37 is available for iPhone and iPad. It is designed to work on both platforms, with optional cloud sync to keep your data consistent. ### How often is Leap37 updated? The latest version of Leap37 is 1.3, last updated on July 15, 2026. This indicates a recent update, suggesting ongoing development and support. ### Is Leap37 suitable for professional advice? Leap37 offers general decision-making guidance based on mathematical principles. It is not intended to provide professional, financial, legal, or medical advice. ## Version history (last 3 releases) ### 1.3 — 2026-07-15 Version 1.3 • Leap37 is now free and ad-supported, which keeps development going. Ads are non-personalized — we don't track you across other apps. • Everything you rely on is unchanged: the calculator, templates, decision tracking, Learn, and optional cloud sync all work exactly as before. • Performance and stability improvements. (Prior — Version 1.2: optional Sign in with Apple/Google for cloud backup & sync, in-app feedback, expanded Learn with sources, and in-app account deletion.) ### 1.2 — 2026-06-26 Initial public release. • Calculator for count-based and time-based decisions. • Track real decisions with automatic look/leap guidance. • 25+ scenario templates. • Plain-English Learn section. • Fully offline. No accounts, no tracking, no ads. ### 1.0 — 2026-06-09 No release notes. ## More apps by Andrey Lee Tsyplakov - [FjordPulse](https://appshunter.io/ios/app/fjordpulse/id6774721938) - [Kottabos: Ancient Greek Game](https://appshunter.io/ios/app/kottabos-ancient-greek-game/id6778179068) - [Dopacart](https://appshunter.io/ios/app/dopacart/id6781797678) - [Easy Bill Splitter calculator](https://appshunter.io/ios/app/easy-bill-splitter-calculator/id6785269063) - [Merdvakt](https://appshunter.io/ios/app/merdvakt/id6786506063) All apps by Andrey Lee Tsyplakov: https://appshunter.io/developer/1896742109 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*