Comparison

NervAR vs Polis Inventory

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

NervAR

Explore ancient Roman Imperial Fora through augmented reality. View 3D reconstructions projected onto AR cards or directly on site using maps from information boards. Compare historical reconstructions with current ruins and navigate the area with an integrated map.

Highlights
  • Augmented Reality Map
  • 3D Reconstruction
  • Audio Guide
  • Historical Information
  • 3D Model Navigation
  • Photo Gallery
Read full description

Nervar is an educational app about the ancient Imperial Fora of Rome. Learn about the Imperial Fora history using new technologies. Print the AR card from Settings, then point the camera on the AR card to view a 3d augmented reconstruction of the Roman Imperial Fora projected on it. If you are in Rome near the ruins of the Imperial Fora, you can use the maps printed on the information boards as the AR card to get augmented reality content. Compare the augmented 3d reconstruction with the ancient ruins of the imperial fora. Nervar allows you to localize yourself with respect to the Roman Imperial Fora. The Area of the Imperial Fora is highlighted on the Map and you can use the Augmented Reality to see where a specific imperial forum is. You can access more information by tapping on each pin corresponding to an Imperial Fora, placed on the map or inside the augmented reality map. Features: - Augmented Reality Map - Augmented Reality 3D Reconstruction - Photo Gallery - Audio Guide - 3D Model Navigation - Historical Information

About

Polis Inventory

Explore an interactive map of over 1,000 ancient Greek city-states from the Archaic and Classical periods. Discover their locations, characteristics, and historical details. Export data for further research.

Highlights
  • Interactive map of 1,035 ancient Greek poleis
  • Detailed historical and geographic information
  • Search and filter settlements by parameters
  • Export dataset in GeoJSON format
  • Based on scholarly research
Features
Read full description

Explore the ancient Greek world through an interactive map of 1,035 poleis (city-states) from the Archaic and Classical periods (c. 650–325 BCE). Polis Inventory brings together geographic and historical information about ancient Greek settlements, allowing you to explore their locations, examine their characteristics, and discover patterns across the Greek world. Explore and Discover - View 1,035 ancient Greek poleis on an interactive map, with terrain and geographic context. - Search for individual poleis by name or explore them geographically. - Filter settlements using 20 geographic and historical parameters. - Examine detailed information about each polis, including its history, political organization, territory, and coinage. - Export the complete dataset in GeoJSON format for use in other mapping and research applications. Built on Scholarly Research Polis Inventory is based on *An Inventory of Archaic and Classical Poleis* by M. H. Hansen and T. H. Nielsen (Oxford University Press, 2004), a pioneering publication of the Copenhagen Polis Centre, referred to here as the “HN Inventory.” The digital dataset comes primarily from polis.stanford.edu, maintained by Stanford University's Department of Classics. It reflects ongoing digitization and enhancement of the original work by the Stanford team and subsequent scholars. We continue to refine the dataset by improving geographic locations, correcting errors, and incorporating additional historical information. Definitions of the historical and geographic parameters are available within the app. Further details, documentation, and attribution can be found at odysseymaps.io, polis.stanford.edu, and in the HN Inventory itself. Free and Independent Polis Inventory is free to use. An optional Tip Jar supports ongoing development; tips are voluntary and do not unlock features. Privacy: No user data is tracked or stored by Polis Inventory. Independence: Polis Inventory is an independent companion to the HN Inventory and is not affiliated with, sponsored, or endorsed by Stanford University or Oxford University Press.

Screenshots

NervAR4 screens
Polis Inventory4 screens

Verdict

The call

The clearest difference is in-app purchases: NervAR at none against Polis Inventory's 3. NervAR also leads on iOS requirement (12.0 vs 17.0). On price, review sentiment, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Polis Inventory sells 3 one-off in-app purchases. NervAR asks for nothing beyond the download.

UpkeepUpdate frequency

NervAR ships an update every 2 months, Polis Inventory every 3 months. The most recent releases landed on November 10, 2026 and November 11, 2026 respectively.

Scorecard3 real differences · 7 level
NervAR versus Polis Inventory: the parameters behind the verdict, then further details
ParameterNervARPolis Inventory
PriceFreeFree
Rating—4.9 (8 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings—8 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 — better17.0
Further details — not scored
Size45 MB4 MB
Age rating4+9+
DeveloperGiovanni MurruJess Taylor

Customer experience

NervAR

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Polis Inventory

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

NervAR

No in-app purchases

3 purchases

Polis Inventory

One-time3
  • Small Tip$0.99
  • Medium Tip$2.99
  • Large Tip$4.99

Questions

Is NervAR free?
NervAR is free to download, with no in-app purchases.
Is Polis Inventory free?
Polis Inventory is free to download, with in-app purchases available.
Do NervAR or Polis Inventory have ads?
Neither NervAR nor Polis Inventory shows ads.
Which is updated more often, NervAR or Polis Inventory?
NervAR ships an update every 2 months, and Polis Inventory every 3 months. Most recently, NervAR was updated on November 10, 2026 and Polis Inventory on November 11, 2026.

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