# Useful Periodic Table Lite vs TriGoTriFree

The clearest difference is update cadence: TriGoTriFree at every 5 months against Useful Periodic Table Lite's every 18 months. TriGoTriFree also leads on iOS requirement (7.0 vs 16.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Useful Periodic Table Lite ships an update every 18 months, TriGoTriFree every 5 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | Useful Periodic Table Lite | TriGoTriFree |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/useful-periodic-table-lite/id584638498/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 5 months** |
| Monetization | Free | Free |
| Size | 25 MB | 36 MB |
| Requires iOS | 16.0 | **7.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mind Trends LLC](https://appshunter.io/developer/582509215) | [Giovanni Bellu'](https://appshunter.io/developer/656437500) |

## What reviewers say

### Useful Periodic Table Lite

[App page](https://appshunter.io/ios/app/useful-periodic-table-lite/id584638498)

Access a comprehensive periodic table with element properties and scientific unit conversions. Includes links to Wikipedia for deeper learning and a quiz to test your knowledge. Ideal for students and professionals in science and engineering.

**Highlights:** Comprehensive element properties, Scientific unit converter, Wikipedia links for further research, Element quiz for students, Easy-to-use interface

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

**In-app purchases:** none


### TriGoTriFree

[App page](https://appshunter.io/ios/app/trigotrifree/id744433892)

This educational app helps solve triangle problems. It offers a free version for right-angled triangles and a full version for general triangles. Users can easily select different triangle cases to solve.

**Highlights:** Solve right-angled triangles, Select various triangle cases, Educational tool for geometry, Free functionality for basic cases, Upgrade available for general triangles

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Useful Periodic Table Lite free?

Useful Periodic Table Lite is free to download, with no in-app purchases.

### Is TriGoTriFree free?

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

### Do Useful Periodic Table Lite or TriGoTriFree have ads?

Neither Useful Periodic Table Lite nor TriGoTriFree shows ads.

### Which is updated more often, Useful Periodic Table Lite or TriGoTriFree?

Useful Periodic Table Lite ships an update every 18 months, and TriGoTriFree every 5 months. Most recently, Useful Periodic Table Lite was updated on November 1, 2026 and TriGoTriFree on November 1, 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.*