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The science of decision-making under uncertainty
Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | devfinancetools.com | laetus.app |
| Pricing | ||
| Platforms | — | |
| Company | 2026 | Startup from Ukraine · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths...
What if uncertainty itself could be studied? Laetus is an AI-assisted behavioral analytics platform that explores how people make decisions under uncertainty using probability, personal observations, real-world experiments, and data analysis. Rather than treating luck as a single event, Laetus...
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


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Maybe You’re Playing the Wrong Lottery | Exploring Luck Without Financial Risk #luck
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing DevFinanceTools and Laetus App.
Laetus App's answer:
Laetus is designed for people who enjoy exploring uncertainty through data.
Its audience includes technology enthusiasts, researchers, data-driven decision makers, lottery hobbyists, AI enthusiasts, and anyone curious about behavioral analytics, probability, and long-term experimentation.
Laetus App's answer:
Laetus is built using Flutter for cross-platform mobile development, Firebase for cloud infrastructure, and AI-powered analytical components for forecasting and behavioral analysis.
The platform combines mobile applications, a web platform, cloud synchronization, statistical processing, and real-time data collection into a unified research environment.
Laetus App's answer:
Laetus is currently used by early adopters, researchers, technology enthusiasts, and users interested in probability, behavioral analytics, and decision-making under uncertainty.
As an independent bootstrapped project, the platform is focused on growing its research community before pursuing enterprise adoption.
Laetus App's answer:
Laetus is an experimental decision intelligence platform rather than a traditional lottery application. It combines behavioral analytics, AI-assisted forecasts, subjective self-assessment (Luck Pulse), public experiments, lottery simulations, and blockchain-based randomness into a single research framework.
Instead of trying to predict the future, Laetus studies how people make decisions under uncertainty and how different independent signals evolve over time.
Laetus App's answer:
Most competing products focus on a single problem: generating numbers, making predictions, or analyzing statistics.
Laetus approaches uncertainty from multiple perspectives. It combines behavioral observations, probability, AI analysis, real-world experiments, and user feedback into one continuously evolving system. The goal is not to promise better predictions but to help users better understand uncertainty, decision-making, and their own behavioral patterns.
Laetus App's answer:
Laetus began as a simple experiment inspired by a question:
Can luck be observed as a long-term behavioral phenomenon rather than a single random event?
The project initially explored lottery simulations but gradually evolved into a broader research platform for studying decision-making under uncertainty.
Today Laetus combines multiple independent sources of evidence - including behavioral observations, subjective assessments, AI analysis, public experiments, and blockchain randomness - to investigate how uncertainty can be explored through data instead of intuition alone.
Share your experience with using DevFinanceTools and Laetus App. For example, how are they different and which one is better?
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