# umop ǝpısdn vs Inflation Calculator

The clearest difference is rating: Inflation Calculator at 4.9 against umop ǝpısdn's 2.7. Inflation Calculator also leads on ratings volume (3.6K vs 6) and update cadence (every 3 months vs every 13 months). umop ǝpısdn's advantage is in-app purchases (none vs 4) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Inflation Calculator sells 4 in-app purchases, starting at $7.49 per year. umop ǝpısdn asks for nothing beyond the download.

Inflation Calculator holds the better App Store score, 4.9 against 2.7. That said, the two scores are not equally well evidenced: Inflation Calculator has 3.6K ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 73% of umop ǝpısdn's written reviews are positive against 85% of Inflation Calculator's.

umop ǝpısdn ships an update every 13 months, Inflation Calculator every 3 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | umop ǝpısdn | Inflation Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (6 ratings)](https://appshunter.io/ios/app/umop-psdn/id354900325/reviews) | **[4.9 (3.6K ratings)](https://appshunter.io/ios/app/inflation-calculator/id926713392/reviews)** |
| Number of ratings | 6 | **3.6K** |
| Positive reviews | 72.7% of reviews | **85.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 6 MB | 4 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [curmi.com](https://appshunter.io/developer/354900328) | [Dylan Burton](https://appshunter.io/developer/1668483591) |

## What reviewers say

### umop ǝpısdn

[App page](https://appshunter.io/ios/app/umop-psdn/id354900325)

Easily convert your typed text into an upside-down format for unique messages and emails. Offers options for lowercase conversion, phone number linking, and compatibility with Windows users. Supports accented characters and emojis.

**Highlights:** Flip text upside down, Convert to lowercase, Handle phone number links, Windows compatibility option, Support accented characters and emoji

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### Inflation Calculator

[App page](https://appshunter.io/ios/app/inflation-calculator/id926713392)

Easily determine the present-day value of past prices using up-to-date inflation data. This tool supports 22 international currencies and provides yearly updates, making it simple to understand historical cost comparisons.

**Highlights:** Calculate dollar value from 1800-2025, Supports 22 international currencies, Yearly inflation data updates, Apple Watch companion app, Simple and intuitive interface

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (yearly) | $7.49 | per year |
| Premium (yearly) | $14.99 | per year |
| Premium (lifetime) | $14.99 | one-time |
| Premium (lifetime) | $29.99 | one-time |

**What reviewers like**

- 👍 Comprehensive and useful
- 👍 Easy to use
- 👍 Excellent value
- 👍 Provides helpful perspective
- 👍 Intuitive and straightforward

**What reviewers complain about**

- 🐛 Not updated for current year
- 🐛 Lacks updates for some currencies
- 🐛 Design could be improved
- 🐛 Lacks ability to directly input data

**Reported bugs**

- Not updated beyond 2024
- Caps out at 2020 for some countries

**Requested features**

- Update to 2025
- Add support for more currencies
- Improve design and usability
- Allow direct data input


## Frequently asked questions

### Is umop ǝpısdn free?

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

### Is Inflation Calculator free?

Inflation Calculator is free to download, with in-app purchases available.

### Which has better reviews, umop ǝpısdn or Inflation Calculator?

Inflation Calculator is rated higher. umop ǝpısdn averages 2.7 out of 5 from 6 ratings, while Inflation Calculator averages 4.9 from 3.6K ratings.

### Do umop ǝpısdn or Inflation Calculator have ads?

Neither umop ǝpısdn nor Inflation Calculator shows ads.

### Which is updated more often, umop ǝpısdn or Inflation Calculator?

umop ǝpısdn ships an update every 13 months, and Inflation Calculator every 3 months. Most recently, umop ǝpısdn was updated on November 6, 2026 and Inflation Calculator on November 6, 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.*