# OldMapsOnline vs Retaining walls

The clearest difference is price: OldMapsOnline at Free against Retaining walls's $0.99. OldMapsOnline also leads on rating (3.2 vs 1.0) and ratings volume (27 vs 1). Retaining walls's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

OldMapsOnline is free to download; Retaining walls costs $0.99 up front. OldMapsOnline sells 1 one-off in-app purchase. Retaining walls asks for nothing beyond the download.

OldMapsOnline holds the better App Store score, 3.2 against 1.0. That said, the two scores are not equally well evidenced: OldMapsOnline has 27 ratings behind it against 1, so its average is the more settled of the two.

OldMapsOnline ships an update every 4 months, Retaining walls fortnightly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | OldMapsOnline | Retaining walls |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[3.2 (27 ratings)](https://appshunter.io/ios/app/oldmapsonline-history-and-maps/id1017609581/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/retaining-walls/id6469571321/reviews) |
| Number of ratings | **27** | 1 |
| Positive reviews | 25.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 11 MB | 4 MB |
| Requires iOS | 17.2 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Klokan Technologies](https://appshunter.io/developer/593541068) | [Fourth Element Energy Pty Ltd](https://appshunter.io/developer/1652667540) |

## What reviewers say

### OldMapsOnline

[App page](https://appshunter.io/ios/app/oldmapsonline-history-and-maps/id1017609581)

Explore a vast collection of historical maps to visualize how the world has changed. Overlay old maps with modern views, use an interactive timeline, and access integrated historical information. Contribute to a growing community database of cartographic history.

**Highlights:** Vast collection of historical maps, Interactive map with timeline, Overlay and compare maps, Community-driven collection, Wikipedia integration, Search by location and year, Browser extension for map collection

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad free version | $1.99 | one-time |

**What reviewers like**

- 🗺️ Great access to historical maps
- 💡 Incredible resource for genealogists and historians
- 👍 User-friendly interface

**What reviewers complain about**

- 🐛 Buggy and glitchy performance
- 🔍 Difficulty zooming and navigating maps
- 📷 Poor map resolution and image quality
- 🔌 App no longer supported or updated

**Reported bugs**

- Maps not loading properly
- Constant crashes and freezes
- Inaccurate GPS and location data

**Requested features**

- Ability to overlay maps and see current location
- Option to download maps for offline use
- Improved search and filtering capabilities
- Easier map sharing and exporting


### Retaining walls

[App page](https://appshunter.io/ios/app/retaining-walls/id6469571321)

This app helps engineers design and assess flexible retaining walls. It simplifies complex calculations for stable and cost-efficient wall designs with an intuitive interface and advanced features.

**Highlights:** Design flexible retaining walls, Assess wall stability, Simplify complex calculations, Cost-efficiency optimization, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OldMapsOnline free?

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

### Is Retaining walls free?

Retaining walls costs $0.99, with no in-app purchases.

### Which has better reviews, OldMapsOnline or Retaining walls?

OldMapsOnline is rated higher. OldMapsOnline averages 3.2 out of 5 from 27 ratings, while Retaining walls averages 1.0 from 1 ratings.

### Do OldMapsOnline or Retaining walls have ads?

OldMapsOnline shows ads; Retaining walls does not.

### Which is updated more often, OldMapsOnline or Retaining walls?

OldMapsOnline ships an update every 4 months, and Retaining walls fortnightly. Most recently, OldMapsOnline was updated on November 1, 2026 and Retaining walls on November 3, 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.*