# Mechanical Dictionary vs MPIS Parent

The clearest difference is in-app purchases: MPIS Parent at none against Mechanical Dictionary's 5. MPIS Parent also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 9 months). On price and device support there is nothing between them.

Both are free to download. Mechanical Dictionary sells 5 in-app purchases, starting at $1.99 per 7 days. MPIS Parent asks for nothing beyond the download.

Mechanical Dictionary ships an update every 9 months, MPIS Parent every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Mechanical Dictionary | MPIS Parent |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (5 ratings)](https://appshunter.io/ios/app/mechanical-dictionary-offline/id1480363529/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 43 MB |
| Requires iOS | 15.6 | **12.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Puju Dekivadiya](https://appshunter.io/developer/1289574712) | [Redbytes Software Pvt Ltd](https://appshunter.io/developer/740514968) |

## What reviewers say

### Mechanical Dictionary

[App page](https://appshunter.io/ios/app/mechanical-dictionary-offline/id1480363529)

This app provides a comprehensive offline dictionary for mechanical engineering terms. It includes video lessons, tests, and expert coaching to enhance knowledge in the field. Features like search, audio pronunciation, and daily word learning are available.

**Highlights:** Offline access to thousands of terms, Search and bookmark functionality, Audio pronunciation of words, Daily 'Word of the Day' feature, Multiple choice quizzes, Customizable color themes

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro Plan | $1.99 | per 7 days |
| Monthly Pro Plan | $4.99 | per month |
| Yearly Pro Plan | $29.99 | per year |
| Remove Ads | $9.99 | one-time |
| Lifetime Access | $39.99 | one-time |


### MPIS Parent

[App page](https://appshunter.io/ios/app/mpis-parent/id6479305002)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Mechanical Dictionary free?

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

### Is MPIS Parent free?

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

### Do Mechanical Dictionary or MPIS Parent have ads?

Mechanical Dictionary shows ads; MPIS Parent does not.

### Which is updated more often, Mechanical Dictionary or MPIS Parent?

Mechanical Dictionary ships an update every 9 months, and MPIS Parent every 2 weeks. Most recently, Mechanical Dictionary was updated on October 24, 2026 and MPIS Parent on October 25, 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.*