# Clue Tracker for Letterboxing vs FlashInvaders

The clearest difference is price: FlashInvaders at Free against Clue Tracker for Letterboxing's $6.99. FlashInvaders also leads on iOS requirement (12.0 vs 15.0). Clue Tracker for Letterboxing's advantage is update cadence (every 2 months vs every 11 months) and chart position (#110 vs unranked). On rating, review sentiment, ratings volume and ads there is nothing between them.

FlashInvaders is free to download; Clue Tracker for Letterboxing costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FlashInvaders holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 598 and 907 respectively. Written reviews point the same way: 74% of Clue Tracker for Letterboxing's written reviews are positive against 77% of FlashInvaders's.

Clue Tracker for Letterboxing ships an update every 2 months, FlashInvaders every 11 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | Clue Tracker for Letterboxing | FlashInvaders |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | [4.7 (598 ratings)](https://appshunter.io/ios/app/clue-tracker-for-letterboxing/id349060603/reviews) | **[4.9 (907 ratings)](https://appshunter.io/ios/app/flashinvaders/id895180919/reviews)** |
| Number of ratings | 598 | **907** |
| Positive reviews | 74.1% of reviews | **76.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 11 months |
| Monetization | Free | Free |
| Best chart rank | **#110** | — |
| Size | 5 MB | 20 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Pearl Crescent](https://appshunter.io/developer/349060606) | [flash invaders](https://appshunter.io/developer/895180922) |

## What reviewers say

### Clue Tracker for Letterboxing

[App page](https://appshunter.io/ios/app/clue-tracker-for-letterboxing/id349060603)

**Currently charting:** #110 Top Paid · Lifestyle (US App Store)

This app helps letterboxing enthusiasts find and track their finds. It allows users to locate nearby letterboxes, view detailed information, record finds, and organize custom itineraries. Save clues and box details for offline access and share lists with other users.

**Highlights:** Find nearby letterboxes, Search by location, name, ID, View detailed box information, Map view with directions, Record finds, Offline clue storage, Organize custom itineraries

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🗺️ Excellent map feature for locating boxes
- 👍 User-friendly and intuitive interface
- 📱 Convenient offline access to saved clues
- 🔄 Integrates both AtlasQuest and LBNA databases
- 🚀 Fast and efficient nearby search functionality

**What reviewers complain about**

- 🐛 Incomplete database coverage (missing many boxes)
- 🔐 Login/password reset issues
- 📍 Map location accuracy problems
- 🔍 Search function limitations and inaccuracies
- 💰 High price point for app

**Reported bugs**

- Login password reset option missing
- Incomplete database results (only shows partial box listings)
- Map location coordinates significantly inaccurate (off by 10+ miles)
- Search results limited to 50 boxes
- Numeric box name searches converted to box number searches

**Requested features**

- Search by box name functionality
- Search by box number capability
- Ability to manually adjust pin locations on personal map
- Display of last found date for boxes
- View other users' logs and comments


### FlashInvaders

[App page](https://appshunter.io/ios/app/flashinvaders/id895180919)

Discover and document street art mosaics globally. Scan artwork to add it to your personal gallery, earn points, and track your progress. Share your finds and compete with friends.

**Highlights:** Discover street art mosaics, Scan and document artwork, Personal mosaic gallery, Share discoveries on social media, Follow friends' scores, Live worldwide flash stream

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Fun and engaging app
- 🚀 Great for exploring cities
- 👾 Clever concept
- 💥 Motivates users to discover art
- 🌍 Encourages travel and discovery

**What reviewers complain about**

- 🐛 Validation/recognition issues
- 🚫 Inability to upload existing photos
- 🤖 Glitchy and unreliable
- 🚫 Accounts getting banned/blocked

**Reported bugs**

- Camera not working
- Login/sign-up issues
- Crashes and black screens
- Inability to restore lost galleries

**Requested features**

- Ability to upload existing photos
- Improved validation and recognition
- Geolocation support for damaged invaders
- Higher zoom levels
- More invaders in different regions


## Frequently asked questions

### Is Clue Tracker for Letterboxing free?

Clue Tracker for Letterboxing costs $6.99, with no in-app purchases.

### Is FlashInvaders free?

FlashInvaders is free to download, with no in-app purchases.

### Which has better reviews, Clue Tracker for Letterboxing or FlashInvaders?

FlashInvaders is rated higher. Clue Tracker for Letterboxing averages 4.7 out of 5 from 598 ratings, while FlashInvaders averages 4.9 from 907 ratings.

### Do Clue Tracker for Letterboxing or FlashInvaders have ads?

Neither Clue Tracker for Letterboxing nor FlashInvaders shows ads.

### Which is updated more often, Clue Tracker for Letterboxing or FlashInvaders?

Clue Tracker for Letterboxing ships an update every 2 months, and FlashInvaders every 11 months. Most recently, Clue Tracker for Letterboxing was updated on October 26, 2026 and FlashInvaders on October 26, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*