# TrackEye vs Flint

The clearest difference is in-app purchases: TrackEye at none against Flint's 2. TrackEye also leads on ads (none vs shown) and iOS requirement (9.0 vs 15.5). Flint's advantage is update cadence (every 4 days vs every 5 months). On price and device support there is nothing between them.

Both are free to download. Flint sells 2 in-app purchases, starting at $3.99 per month. TrackEye asks for nothing beyond the download.

TrackEye ships an update every 5 months, Flint every 4 days. The most recent releases landed on October 29, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | TrackEye | Flint |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 30 MB | 81 MB |
| Requires iOS | **9.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Exeros Technologies Ltd](https://appshunter.io/developer/1475082966) | [Onspec Software Ltd](https://appshunter.io/developer/6792139382) |

## What reviewers say

### TrackEye

[App page](https://appshunter.io/ios/app/trackeye/id1475082967)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flint

[App page](https://appshunter.io/ios/app/flint-boiler-onsite-guide/id6792139380)

This app provides UK gas engineers with instant access to boiler manuals, fault codes, service figures, and fault-finding charts for thousands of domestic gas boilers. It features a search function, a Q&A tool powered by manual data, and essential calculation tools for onsite use.

**Highlights:** 2,300+ gas boilers from 45 manufacturers, 60,000+ fault codes with manual references, 1,000+ manufacturer manuals with full-text search, Service figures for over 2,100 models, Interactive fault-finding charts, AI-powered Q&A for manual queries, Onsite calculation tools (gas rate, CO/CO2, etc.)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flint Pro | $3.99 | per month |
| Flint Pro | $29.99 | per year |


## Frequently asked questions

### Is TrackEye free?

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

### Is Flint free?

Flint is free to download, with in-app purchases available.

### Do TrackEye or Flint have ads?

Flint shows ads; TrackEye does not.

### Which is updated more often, TrackEye or Flint?

TrackEye ships an update every 5 months, and Flint every 4 days. Most recently, TrackEye was updated on October 29, 2026 and Flint on November 5, 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.*