# Heritage Units vs Upside Down Text ∞

The clearest difference is rating: Upside Down Text ∞ at 4.9 against Heritage Units's 4.1. Upside Down Text ∞ also leads on in-app purchases (none vs 2) and ads (none vs shown). Heritage Units's advantage is update cadence (every 10 days vs every 2 months) and ratings volume (253 vs 15). On price there is nothing between them.

Both are free to download. Heritage Units sells 2 in-app purchases, starting at $0.99 per year. Upside Down Text ∞ asks for nothing beyond the download.

Upside Down Text ∞ holds the better App Store score, 4.9 against 4.1. That said, the two scores are not equally well evidenced: Heritage Units has 253 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 58% of Heritage Units's written reviews are positive against 89% of Upside Down Text ∞'s.

Heritage Units ships an update every 10 days, Upside Down Text ∞ every 2 months. The most recent releases landed on October 18, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Heritage Units | Upside Down Text ∞ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (253 ratings)](https://appshunter.io/ios/app/heritage-units/id1117504088/reviews) | **[4.9 (15 ratings)](https://appshunter.io/ios/app/upside-down-text/id1512472489/reviews)** |
| Number of ratings | **253** | 15 |
| Positive reviews | 58.1% of reviews | **88.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 122 MB | 6 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Brian Minnich](https://appshunter.io/developer/1117504087) | [Sandya Leelarathne](https://appshunter.io/developer/1382464578) |

## What reviewers say

### Heritage Units

[App page](https://appshunter.io/ios/app/heritage-units/id1117504088)

This app allows users to track and report special interest locomotives from major US railroads. View reported units on a map within a 200-mile radius and contribute new sightings directly from your device.

**Highlights:** Track heritage units, Report new locomotive locations, View locomotives on maps, Search within 200 miles, Support for major railroads

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Free | $0.99 | per year |
| Premium Membership | $5.99 | per year |

**What reviewers like**

- 🎯 Excellent tool for tracking heritage units and special locomotives
- 📍 Real-time location reporting from community users
- 👍 User-friendly interface and intuitive navigation
- 📸 Ability to upload photos of locomotives
- 🚀 Responsive developer support and regular updates

**What reviewers complain about**

- 🐛 Frequent app crashes and freezing
- 🔓 Persistent login/logout issues
- ⚠️ Confusing error messages without clear explanations
- 📵 Limited photo upload capacity for free users
- 🚫 Arbitrary account suspensions and bans

**Reported bugs**

- App crashes when refreshing or loading reports
- Persistent 'You've reached your limit for spots' error that lasts weeks or months
- Login credentials rejected despite correct password/username
- Automatic logout after 1-2 months of inactivity
- Premium subscription purchases not recognized by app

**Requested features**

- Dark mode and light mode toggle
- Report timestamp visibility to distinguish old vs new reports
- Edit and delete buttons for submitted reports
- Increase daily/monthly report submission limits
- Ability to favorite or star specific locomotives


### Upside Down Text ∞

[App page](https://appshunter.io/ios/app/upside-down-text/id1512472489)

Easily flip your text upside down to create unique messages. Simply type your text, copy it, and paste it into any application to surprise your friends. Have fun experimenting with this simple yet engaging tool.

**Highlights:** Type text to format, Copy formatted text, Share formatted text, Paste into any app, Create unique messages

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Heritage Units free?

Heritage Units is free to download, with in-app purchases available.

### Is Upside Down Text ∞ free?

Upside Down Text ∞ is free to download, with no in-app purchases.

### Which has better reviews, Heritage Units or Upside Down Text ∞?

Upside Down Text ∞ is rated higher. Heritage Units averages 4.1 out of 5 from 253 ratings, while Upside Down Text ∞ averages 4.9 from 15 ratings.

### Do Heritage Units or Upside Down Text ∞ have ads?

Heritage Units shows ads; Upside Down Text ∞ does not.

### Which is updated more often, Heritage Units or Upside Down Text ∞?

Heritage Units ships an update every 10 days, and Upside Down Text ∞ every 2 months. Most recently, Heritage Units was updated on October 18, 2026 and Upside Down Text ∞ on October 8, 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.*