# TempVerter DB vs Quick Synonyms

The clearest difference is price: TempVerter DB at Free against Quick Synonyms's $4.99. TempVerter DB also leads on update cadence (every 6 weeks vs every 32 months) and ratings volume (17 vs 3). Quick Synonyms's advantage is rating (5.0 vs 4.8). On review sentiment, ads and in-app purchases there is nothing between them.

TempVerter DB is free to download; Quick Synonyms costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Quick Synonyms holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: TempVerter DB has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

TempVerter DB ships an update every 6 weeks, Quick Synonyms every 32 months. The most recent releases landed on September 28, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | TempVerter DB | Quick Synonyms |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.8 (17 ratings)](https://appshunter.io/ios/app/tempverter-db/id1028872481/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/quick-synonyms/id1076119771/reviews)** |
| Number of ratings | **17** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 32 months |
| Monetization | **Free** | Paid |
| Size | 24 MB | 1 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Michael Stebel](https://appshunter.io/developer/1027443988) | [Furnace Creek Software LLC](https://appshunter.io/developer/321189453) |

## What reviewers say

### TempVerter DB

[App page](https://appshunter.io/ios/app/tempverter-db/id1028872481)

This app instantly converts temperatures between Celsius, Fahrenheit, and Kelvin as you type. It also includes a vast scientific database with over 225 important temperature references across various fields.

**Highlights:** Instant temperature conversion (C, F, K), Extensive scientific temperature database, 225+ reference temperatures, Covers astronomy, biology, chemistry, physics, and more, Temperatures provided in C, F, and K, Copy temperature values to clipboard

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

**In-app purchases:** none


### Quick Synonyms

[App page](https://appshunter.io/ios/app/quick-synonyms/id1076119771)

Instantly find synonyms for any word directly within other iOS apps. Select text, tap Share, and choose the synonym lookup option.

**Highlights:** Text action extension, In-app synonym lookup, Share menu integration, Works across system apps

**In-app purchases:** none


## Frequently asked questions

### Is TempVerter DB free?

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

### Is Quick Synonyms free?

Quick Synonyms costs $4.99, with no in-app purchases.

### Which has better reviews, TempVerter DB or Quick Synonyms?

Quick Synonyms is rated higher. TempVerter DB averages 4.8 out of 5 from 17 ratings, while Quick Synonyms averages 5.0 from 3 ratings.

### Do TempVerter DB or Quick Synonyms have ads?

Neither TempVerter DB nor Quick Synonyms shows ads.

### Which is updated more often, TempVerter DB or Quick Synonyms?

TempVerter DB ships an update every 6 weeks, and Quick Synonyms every 32 months. Most recently, TempVerter DB was updated on September 28, 2026 and Quick Synonyms on September 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*