# OldMapsOnline vs Hidden History Project

The clearest difference is in-app purchases: Hidden History Project at none against OldMapsOnline's 1. Hidden History Project also leads on ads (none vs shown) and update cadence (every 9 days vs every 4 months). On price and device support there is nothing between them.

Both are free to download. OldMapsOnline sells 1 one-off in-app purchase. Hidden History Project asks for nothing beyond the download.

OldMapsOnline ships an update every 4 months, Hidden History Project every 9 days. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | OldMapsOnline | Hidden History Project |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (27 ratings)](https://appshunter.io/ios/app/oldmapsonline-history-and-maps/id1017609581/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 25.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 24 MB |
| Requires iOS | 17.2 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Klokan Technologies](https://appshunter.io/developer/593541068) | [Ying Chen113492257131](https://appshunter.io/developer/6777512335) |

## 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


### Hidden History Project

[App page](https://appshunter.io/ios/app/hidden-history-project/id6777512333)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OldMapsOnline free?

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

### Is Hidden History Project free?

Hidden History Project is free to download, with no in-app purchases.

### Do OldMapsOnline or Hidden History Project have ads?

OldMapsOnline shows ads; Hidden History Project does not.

### Which is updated more often, OldMapsOnline or Hidden History Project?

OldMapsOnline ships an update every 4 months, and Hidden History Project every 9 days. Most recently, OldMapsOnline was updated on November 1, 2026 and Hidden History Project on November 5, 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.*