# KERIS AR vs Prolost Watches

The clearest difference is price: KERIS AR at Free against Prolost Watches's $19.99. KERIS AR also leads on update cadence (every 5 days vs every 2 weeks) and device support (3 vs 1). Prolost Watches's advantage is chart position (#177 vs unranked). On ads and in-app purchases there is nothing between them.

KERIS AR is free to download; Prolost Watches costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

KERIS AR ships an update every 5 days, Prolost Watches every 2 weeks. The most recent releases landed on September 17, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | KERIS AR | Prolost Watches |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/prolost-watches/id6758811451/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | — | Paid |
| Best chart rank | — | **#177** |
| Size | 280 MB | 13 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Visionaries777](https://appshunter.io/developer/498451582) | [Prolost, Inc.](https://appshunter.io/developer/1848205842) |

## What reviewers say

### KERIS AR

[App page](https://appshunter.io/ios/app/keris-ar/id6747791108)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prolost Watches

[App page](https://appshunter.io/ios/app/prolost-watches/id6758811451)

**Currently charting:** #177 Top Paid · Lifestyle (US App Store)

Log and manage your watch collection, track daily wear, and store photos. This app helps you revisit memories and understand your collecting habits, even tracking finances for watches you sell. It offers a private, offline experience for watch enthusiasts.

**Highlights:** Log watch details, Track daily wear, Store photos and memories, View wear insights, Manage watch finances, Offline data storage

**In-app purchases:** none


## Frequently asked questions

### Is KERIS AR free?

KERIS AR is free to download, with no in-app purchases.

### Is Prolost Watches free?

Prolost Watches costs $19.99, with no in-app purchases.

### Do KERIS AR or Prolost Watches have ads?

Neither KERIS AR nor Prolost Watches shows ads.

### Which is updated more often, KERIS AR or Prolost Watches?

KERIS AR ships an update every 5 days, and Prolost Watches every 2 weeks. Most recently, KERIS AR was updated on September 17, 2026 and Prolost Watches on September 13, 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.*