Mappa Mundi vs DACT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mappa Mundi
Explore the Mappa Mundi, a large medieval map of the known world. Discover 1,068 features with detailed explanations, historical context, and geographic notes.
- Interactive medieval map
- 1,068 explorable features
- Detailed inscriptions
- Historical notes
- Geographic context
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The Mappa Mundi in Hereford Cathedral is the largest existing medieval map of the known world at the time. Drawn on a single sheet of vellum, it is 130 cm wide. It was created in about 1300 AD by Richard of Holdingham in Lincolnshire, England. 1,068 features to explore on the interactive map with explanations of the written inscriptions and historical and geographic notes.
DACT
Access a wealth of digital resources related to the history and transmission of plainchant. Explore chant databases, image repositories, videos, and audio recordings of liturgical sources. The app uses Bluetooth beacons for location-based content and notifications.
- Chant databases access
- Image and video repositories
- SoundWalks with recordings
- Location-based content via Bluetooth beacons
- Exhibit proximity notifications
- Links to partner projects
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Explore the Digital Analysis of Chant Transmission Project. Access links to chant databases, image repositories, YouTube videos, SoundWalks and more. DACT is a purpose built app for people interested in the history and transmission of plainchant. Links to online resources including the Cantus Database and Cantus Index are at your fingertips, along with access to our SoundWalks providing images and recordings of manuscript and printed liturgical sources. The DACT app highlights contributions from partner and co-investigator projects around the world. The app uses Bluetooth Beacons to show you relevant content based on your location in the SoundWalks. Please note that you do not have to be in any specific location in order to access any of the content in the app. The app also uses Bluetooth Beacons to detect proximity to exhibits when the app is running in the background. It will trigger notifications when you are close to an exhibit. As with all apps that use Bluetooth Beacons in the background this can dramatically decrease battery life. Scanning for beacons can easily be disabled in the app by pressing the prominent Automatic Triggering button.
Screenshots
Verdict
The clearest difference is iOS requirement: Mappa Mundi at 13.0 against DACT's 15.0. On price, rating, ratings volume and update cadence there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Mappa Mundi against 5.0 for DACT. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Both ship on a similar rhythm, roughly every 6 months. The most recent releases landed on October 19, 2026 and October 9, 2026 respectively.
| Parameter | Mappa Mundi | DACT |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Every 6 months | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 24 MB | 135 MB |
| Age rating | 4+ | 4+ |
| Developer | Doug Colton | Llama Digital |
Customer experience
Mappa Mundi
DACT
In-app purchases
Mappa Mundi
No in-app purchases
DACT
No in-app purchases
