---
title: "Lichen: Big-O Algorithms - Reviews, Revenue and Downloads in Uruguay | Apple App Store"
description: "Lichen is a focused, offline reference for classical algorithms and their Big-O complexity. Built for students, interview candidates, and working engineers who want fast answers without noise.  A clea"
---

# Lichen: Big-O Algorithms — Uruguay
> Algorithm complexity reference

![Lichen: Big App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/9d/a6/ca/9da6cab8-0903-58de-52ce-1af5a5030c5e/AppIcon-0-0-1x_U007emarketing-0-6-0-85-220.png/434x0w.png)

**Developer:** [Linh Phan Nhat Khanh](https://apptail.io/developer/linh-phan-nhat-khanh-lzdt)
**Category:** Reference
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** com.lichenbigo.lichen
**Store:** Apple App Store
**Country:** Uruguay
**Version:** 1.0.0 (released 2026-05-22)
**Original Release:** 2026-05-22
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/uy/app/app/id6771637608)
**AppTail Page:** [https://apptail.io/app/lichen-big-o-algorithms-UORz/uruguay](https://apptail.io/app/lichen-big-o-algorithms-UORz/uruguay)

## Lichen: Big Description
Lichen is a focused, offline reference for classical algorithms and their Big-O complexity. Built for students, interview candidates, and working engineers who want fast answers without noise.

A clean catalog, a side-by-side growth chart, and a quick quiz mode — all on a single dark stage. No clutter, no popups, no upsells.

KEY FEATURES
• Catalog of 30+ algorithms across Sort, Search, Graph, Tree, String, Dynamic Programming, Divide & Conquer, Greedy, Hashing, and Heap
• Best, average, worst, and space complexities for every algorithm
• Live growth-rate chart comparing O(1), O(log n), O(n), O(n log n), O(n²), O(2ⁿ), and O(n!)
• Pseudocode snippets and real-world use cases on every detail page
• Filter by category and by complexity class with single-tap chips
• Bookmark algorithms you want to revisit
• Big-O Quiz mode for spaced practice before interviews

DESIGNED FOR INTERVIEW PREP
Whether you are warming up for a coding round, picking the right data structure for a hot loop, or refreshing concepts before a system design call, Lichen stays out of the way and surfaces the answer in two taps.

PRIVACY
No tracking. No accounts. Your bookmarks live on your device.

## Lichen: Big Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/59/4f/19/594f19fe-6428-b2a6-f675-e35b8a13df79/01_Catalog_iPhone6_9.png/1320x2868.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/18/68/93/18689375-4a32-a660-3a16-bed8f11581ee/02_Chart_iPhone6_9.png/1320x2868.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/fd/8c/d1/fd8cd111-1d73-381b-13e0-318a8f534268/03_Quiz_iPhone6_9.png/1320x2868.png)







## Lichen: Big Available In
- [Bahrain](https://apptail.io/app/lichen-big-o-algorithms-UORz/bahrain)
- [Cyprus](https://apptail.io/app/lichen-big-o-algorithms-UORz/cyprus)
- [Estonia](https://apptail.io/app/lichen-big-o-algorithms-UORz/estonia)
- [Croatia](https://apptail.io/app/lichen-big-o-algorithms-UORz/croatia)
- [Ireland](https://apptail.io/app/lichen-big-o-algorithms-UORz/ireland)
- [Kenya](https://apptail.io/app/lichen-big-o-algorithms-UORz/kenya)
- [Cayman Islands](https://apptail.io/app/lichen-big-o-algorithms-UORz/cayman-islands)
- [Sri Lanka](https://apptail.io/app/lichen-big-o-algorithms-UORz/sri-lanka)
- [Lithuania](https://apptail.io/app/lichen-big-o-algorithms-UORz/lithuania)
- [Latvia](https://apptail.io/app/lichen-big-o-algorithms-UORz/latvia)
- [North Macedonia](https://apptail.io/app/lichen-big-o-algorithms-UORz/north-macedonia)
- [Macao SAR China](https://apptail.io/app/lichen-big-o-algorithms-UORz/macau)
- [Malta](https://apptail.io/app/lichen-big-o-algorithms-UORz/malta)
- [Namibia](https://apptail.io/app/lichen-big-o-algorithms-UORz/namibia)
- [Panama](https://apptail.io/app/lichen-big-o-algorithms-UORz/panama)
- [Qatar](https://apptail.io/app/lichen-big-o-algorithms-UORz/qatar)
- [Slovakia](https://apptail.io/app/lichen-big-o-algorithms-UORz/slovakia)
- [Senegal](https://apptail.io/app/lichen-big-o-algorithms-UORz/senegal)
- [Tunisia](https://apptail.io/app/lichen-big-o-algorithms-UORz/tunisia)
- [Uruguay](https://apptail.io/app/lichen-big-o-algorithms-UORz/uruguay)
- [Uzbekistan](https://apptail.io/app/lichen-big-o-algorithms-UORz/uzbekistan)

---

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