# Problem Logger vs LUFI AI Companion

The clearest difference is price: LUFI AI Companion at Free against Problem Logger's $9.99. LUFI AI Companion also leads on iOS requirement (15.1 vs 18.6). On ads, in-app purchases and device support there is nothing between them.

LUFI AI Companion is free to download; Problem Logger costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Problem Logger | LUFI AI Companion |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 days |
| Monetization | Paid | — |
| Size | 3 MB | 62 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Thomas Richardson](https://appshunter.io/developer/1887851473) | [HUERLEM PETERS](https://appshunter.io/developer/1818979405) |

## What reviewers say

### Problem Logger

[App page](https://appshunter.io/ios/app/problem-logger/id6767587409)

Easily log and track recurring issues over time with a private, dated timeline. Ideal for recording symptoms, home repairs, or any situation where knowing when an event occurred is important. Keep your records secure and local on your device.

**Highlights:** Create dated timelines of events, Log incidents in seconds, Set optional reminders, Review timelines over days/weeks/months, Local device storage, App lock for privacy

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

**In-app purchases:** none


### LUFI AI Companion

[App page](https://appshunter.io/ios/app/lufi-ai-companion/id6792008765)

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

**In-app purchases:** none


## Frequently asked questions

### Is Problem Logger free?

Problem Logger costs $9.99, with no in-app purchases.

### Is LUFI AI Companion free?

LUFI AI Companion is free to download, with no in-app purchases.

### Do Problem Logger or LUFI AI Companion have ads?

Neither Problem Logger nor LUFI AI Companion shows ads.

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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.*