# Output Books vs LostMod Track

The clearest difference is update cadence: Output Books at every 10 days against LostMod Track's monthly. Output Books also leads on iOS requirement (15.5 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Output Books ships an update every 10 days, LostMod Track monthly. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Output Books | LostMod Track |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Monthly |
| Monetization | Free | — |
| Size | 47 MB | 139 MB |
| Requires iOS | **15.5** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Srimax Software System](https://appshunter.io/developer/582993446) | [Sat Pal](https://appshunter.io/developer/1793157988) |

## What reviewers say

### Output Books

[App page](https://appshunter.io/ios/app/output-books/id1474458816)

This business application allows users to access and review accounting reports and invoices on the go. It requires a server application to be installed and running to connect with your business data, ensuring your information stays on your own servers.

**Highlights:** View and download invoices as PDF, Track party-wise receivables and payables, Access accounting reports like Ledger and Daybook, Connect to your own server application, Review business data on the go

**Features:** Vision Pro support

**In-app purchases:** none


### LostMod Track

[App page](https://appshunter.io/ios/app/lostmod-track/id6748902251)

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

**In-app purchases:** none


## Frequently asked questions

### Is Output Books free?

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

### Is LostMod Track free?

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

### Do Output Books or LostMod Track have ads?

Neither Output Books nor LostMod Track shows ads.

### Which is updated more often, Output Books or LostMod Track?

Output Books ships an update every 10 days, and LostMod Track monthly. Most recently, Output Books was updated on November 3, 2026 and LostMod Track on October 28, 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.*