Gacha Architect vs SRT Flow
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Gacha Architect
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"Stop guessing. Start calculating with mathematical precision." Most gacha calculators rely on Monte Carlo simulationsβrandom 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. β 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 youβll gain from character banners to plan your next 6-star weapon. β 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. β 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. β Roadmap: Coming Soon Full support for the following titles is coming soon: Genshin Impact Goddess of Victory: NIKKE Honkai: Star Rail Wuthering Waves β 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.
SRT Flow
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Key Features β’ Generate audio-based subtitles after selecting a video β’ Save translated/original subtitles (SRT, VTT) β’ Export original text (TXT, CSV) β’ Preview subtitles and check video overlays β’ Cache-based processing for easy retry in case of task failure β’ Supports Korean, English, and Japanese UI
Screenshots
Verdict
The clearest difference is update cadence: Gacha Architect at every 2 days against SRT Flow's monthly. Gacha Architect also leads on iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Gacha Architect ships an update every 2 days, SRT Flow monthly. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.
| Parameter | Gacha Architect | SRT Flow |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days β better | Monthly |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 13.0 β better | 18.0 |
| Further details β not scored | ||
| Size | 31 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | kiha kwon | changok kim |
In-app purchases
Gacha Architect
No in-app purchases
SRT Flow
No in-app purchases









