# TrainsBook vs Solution Finder

The clearest difference is rating: Solution Finder at 5.0 against TrainsBook's 3.0. Solution Finder also leads on review sentiment (100% vs 62%) and ads (none vs shown). TrainsBook's advantage is update cadence (every 3 months vs every 12 months) and iOS requirement (8.0 vs 11.0). On price, ratings volume, 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.

Solution Finder holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews point the same way: 62% of TrainsBook's written reviews are positive against 100% of Solution Finder's.

TrainsBook ships an update every 3 months, Solution Finder every 12 months. The most recent releases landed on September 13, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | TrainsBook | Solution Finder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/trainsbook/id633932394/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/solution-finder/id1574510476/reviews)** |
| Number of ratings | 1 | **2** |
| Positive reviews | 61.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 months** | Every 12 months |
| Monetization | Ad-supported | **Free** |
| Size | 20 MB | 146 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [KENJI KUSAKA](https://appshunter.io/developer/633932397) | [Kuraray Europe GmbH](https://appshunter.io/developer/1574510478) |

## What reviewers say

### TrainsBook

[App page](https://appshunter.io/ios/app/trainsbook/id633932394)

Explore a vast pictorial book of over 1000 trains with detailed information. Test your knowledge with randomized quizzes and access updated data referencing Wikipedia. This app supports 26 languages for global train enthusiasts.

**Highlights:** Pictorial book of over 1000 trains, Randomized quiz sets, Wikipedia data integration, Translation for 26 languages, Updated train information

**Features:** macOS Compatibility

**In-app purchases:** none


### Solution Finder

[App page](https://appshunter.io/ios/app/solution-finder/id1574510476)

This app provides product recommendations for architectural projects based on user-defined criteria like soundproofing, color, or UV resistance. It helps users select appropriate Trosifol® PVB and SentryGlas® ionoplast products with detailed information and comparisons.

**Highlights:** Product recommendations for Trosifol® and SentryGlas®, Criteria-based selection (soundproofing, color, UV), Detailed product information, Comparison of noise protection measures, Visualization of color options, Offline usability

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TrainsBook free?

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

### Is Solution Finder free?

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

### Which has better reviews, TrainsBook or Solution Finder?

Solution Finder is rated higher. TrainsBook averages 3.0 out of 5 from 1 ratings, while Solution Finder averages 5.0 from 2 ratings.

### Do TrainsBook or Solution Finder have ads?

TrainsBook shows ads; Solution Finder does not.

### Which is updated more often, TrainsBook or Solution Finder?

TrainsBook ships an update every 3 months, and Solution Finder every 12 months. Most recently, TrainsBook was updated on September 13, 2026 and Solution Finder on June 10, 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.*