# Gacha Architect : CALC — Endfield 1.0 Precise Pity

> Endfield 1.0 Precise Pity (iPhone/iPad app by kiha kwon.)

- Source: https://appshunter.io/ios/app/gacha-architect-calc/id6758045984 (this page in markdown: same URL + `.md`)
- Developer: [kiha kwon](https://appshunter.io/developer/1870540100)
- Category: Utilities, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 31 MB
- Languages: American English
- Released: 2026-01-21
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/gacha-architect-calc/id6758045984/reviews.md

## What is Gacha Architect?

"Stop guessing. Start calculating with mathematical precision."

Most gacha calculators rely on Monte Carlo simulations—random trials that only give you an approximation. MirrorLab is different. We use DP-based state space analysis to provide the exact mathematical probability distribution for your pulls.

■ Day-One Support: Arknights: Endfield Optimized for the complex mechanics of Arknights: Endfield 1.0.

Chartered Headhunting: Full implementation of the 120-pull Featured Guarantee (Spark).

Arsenal Issue: Accurate modeling of the 80-pull guarantee and the 100/180/260... repeating mileage system.

Hybrid Efficiency: Calculate how many Arsenal Tickets you’ll gain from character banners to plan your next 6-star weapon.

■ Why MirrorLab?

Precision DP Engine: Forget the variance of Monte Carlo. Our engine uses recursive logic to calculate exact probabilities for every possible outcome.

Refund Factor: Factor in 'Certificates' from duplicate pulls to determine your actual cost-per-pull and re-investment efficiency.

Architect's Report: Visualize "Worst-Case Scenarios" and "Efficiency Zones" to optimize your spending and avoid mindless pulling.

■ Two Analysis Modes [Basic Mode] Quick Check

Enter base rates, pity counters, and costs.

Instantly see the pulls required for 50% / 90% / 99% success.

Cost conversion to real-world items (e.g., pizza slices) for better financial perspective.

[Pro Mode] Deep Dive

Customize and edit Soft Pity curves.

Get exact Expected Values and Standard Deviations.

View detailed probability distribution histograms.

■ Roadmap: Coming Soon Full support for the following titles is coming soon:

Genshin Impact

Goddess of Victory: NIKKE

Honkai: Star Rail

Wuthering Waves

■ Key Features

Works Offline: No internet required for calculations.

Privacy First: No login, no data collection, no unnecessary permissions.

Dark/Light Theme: Minimalist 'Mirror' interface designed for focus.

Save & Share: Save your custom presets for any banner or game.

Calculate before you pull. MirrorLab is the smartest sandbox for your gacha strategy.


## Version history (last 3 releases)

### 0.8.2 — 2026-01-25

- Added image share feature
- Improved Standard/Weapon banner calculations
- Improved calculation accuracy

### 0.8.1 — 2026-01-23

Version 0.8.1 Update

Arknights: Endfield Support: Full support for the global launch of Arknights: Endfield.
 
DP-Based Engine: Replaced Monte Carlo simulations with a precise Dynamic Programming engine for 100% mathematical accuracy.

Endfield Specific Mechanics: Implementation of the 120-pull Featured Guarantee (Spark) and the repeating Arsenal Issue Mileage (100/180/260) system.

Hybrid Yield Calculation: Added a module to estimate weapon pity progress based on Arsenal Tickets earned from character pulls.

Advanced Visualization: New histograms and statistical reports to visualize your gacha success probability.

### 0.8.0 — 2026-01-21

No release notes.

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*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 2026-06-01.*