Green vs quant blitz
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Green
Explore Brooklyn's historic Green-Wood Cemetery with this companion app. Discover its art, history, and nature through expert videos and audio segments. Navigate the grounds easily with an interactive map.
- Explore by theme: Art, History, Nature
- Interactive map for on-the-go exploration
- Expert-led video and audio content
- Information on monuments and restoration
- Focus on environment and horticulture
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Your companion to exploring Brooklyn’s famous Green-Wood Cemetery, a National Historic Landmark. The app allows you to focus on any one of its three main themes: Art, History or Nature. Or tap on “Map” and explore as you go. Videos and audio segments present Green-Wood staff and other experts talking about the cemetery, its history, environment and horticulture, monuments and restoration.
quant blitz
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Prep for quant interviews in a few minutes a day, for trading and quant developer roles. quant blitz turns the questions trading firms ask into short multiple-choice lessons, with an explanation after every answer: over 1,400 questions, plus mental math speed drills. Pick your role, then work through a path that ramps up from the basics. TRADING • Mental math: timed speed drills with typed answers, Zetamac style, from quick sums to decimals, percentages and sequences. Plus test conditions: 80 problems in 8 minutes. • Probability: counting, Bayes, expectation, variance and the classic distributions. • Brainteasers: dice, cards and urns, waiting times and optimal stopping. • Betting and games: expected value, Kelly sizing and game theory. • Market making: quotes and spreads, making a market, adverse selection and trading games. • Options: payoffs and put–call parity, pricing bounds, the Greeks and volatility. DEV • C++: core language, memory and object lifetime, templates, the STL, concurrency and memory ordering, operating systems, and low-latency performance. • Python: the data model, data structures and their costs, functions and OOP, the GIL and concurrency, CPython internals, NumPy and pandas, and operating systems. LEARN IN A WAY THAT STICKS • Lessons of 8–10 questions that ramp up in difficulty • Missed questions come back until you get them right, then return in spaced reviews • Take the placement test to start at your level, or jump ahead with a checkpoint • Streaks, a daily XP goal and an optional reminder keep you consistent BLITZ MODE Answer against the clock for bonus XP: 30 seconds for concept questions, 60 for the rest. PREMIUM The full path and the speed drills are free; lessons are limited by hearts. Premium adds unlimited hearts, blitz mode, jumping straight to any section, full stats (mastery by section, accuracy by question type and 30 days of XP) and a searchable question bank. Choose yearly, with a 3-day free trial, monthly, or a one-time lifetime purchase. Yearly and monthly Premium are auto-renewing subscriptions. Payment is charged to your Apple Account at confirmation of purchase, or when a free trial ends, and the subscription renews at the end of each period unless you cancel at least 24 hours before it ends. Manage or cancel it in your App Store account settings. Lifetime is a one-time purchase and doesn't renew. Privacy policy: https://lukazsdev.github.io/quantblitz/privacy/ Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Green at none against quant blitz's 3. Green also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.4). quant blitz's advantage is update cadence (every 3 days vs every 3 months). On price and ads 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
Both are free to download. quant blitz sells 3 in-app purchases, starting at $12.99 per month. Green asks for nothing beyond the download.
Green ships an update every 3 months, quant blitz every 3 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.
| Parameter | Green | quant blitz |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (12 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 65 MB | 61 MB |
| Age rating | 4+ | 4+ |
| Developer | GREEN-WOOD HISTORIC FUND INC THE ADMIN BY GREEN-WOOD CEMETERY AS TRUSTEE | Velori Labs Ltd |
In-app purchases
Green
No in-app purchases
quant blitz
- Premium Monthly7 Days trial$12.991 Month
- Premium Yearly3 Days trial$79.991 Year
- Premium Lifetime$199.99









