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 ancient Greek settlements from the Archaic and Classical periods. This interactive map visualizes and filters historical data based on physical and historical parameters, offering a digital companion to a seminal scholarly work.

Highlights
  • Interactive map of ancient Greek poleis
  • Search and filter by physical/historical parameters
  • Data based on scholarly inventory
  • View parameter definitions in-app
  • Export data in GeoJSON format
  • No user data tracking
Features
Read full description

Polis-Inventory maps the ancient Greek settlements from the Archaic and Classical periods (c. 650–325 BCE) as identified in the pioneering work published by the Copenhagen Polis Centre, An Inventory of Archaic and Classical Poleis by M. H. Hansen and T. Nielsen (Oxford, 2005; here referred to as the “HN Inventory”). The digital dataset in Polis-Inventory, based on the HN Inventory, comes primarily from the website polis.stanford.edu, managed by Stanford University’s Department of Classics. The dataset reflects ongoing digitization and enhancement of the original print work by the Stanford team and subsequent classical scholars. We continue to advance the data, improving locations and correcting errors as they are encountered. Polis-Inventory is an informative, interactive companion to the HN Inventory, allowing visualization, search, and filtering of the poleis using a set of physical and historical parameters. Parameter definitions are available in context as you browse. Further detail and attribution can be found at odysseymaps.io, polis.stanford.edu, and in the HN Inventory itself. If you would like a copy of the data in this app, you can copy it to your clipboard in GeoJSON format from the About page. Privacy: No user data is tracked or stored by Polis-Inventory. Support: An optional Tip Jar is available to support ongoing development (tips are voluntary and don’t unlock features). Independence: Polis-Inventory is an independent companion 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 16.6). 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 October 18, 2026 and October 23, 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 — better16.6
Further details — not scored
Size45 MB4 MB
Age rating4+4+
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 October 18, 2026 and Polis Inventory on October 23, 2026.

Other comparisons