Comparison

KERIS AR vs Prolost Watches

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

Head to head
About

KERIS AR

Features
Read full description

Turn the KERIS MECA into an immersive experience. Explore the movement, learn each component’s role, and design your signature look, all in your space. - Visualize the complete watch around its movement in AR and witness live Luminova effects - Go X-ray to examine the inner architecture with clarity - Tap hotspots to decode mechanisms - Visualize key finishes & more Made for collectors, creators, and the curious, KERIS AR transforms timekeeping into pure experience.

About

Prolost Watches

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
Currently charting
Read full description

My name is Stu. I did not set out to become a watch collector, but the hobby has captivated my attention and held it for years. I made Prolost Watches not to quantify my fascination, but to elevate my enjoyment of it. • Every watch I own is entered into the app. Every detail I want to remember, in one place. • Every day I wear a watch, I log it. Over time, this reveals insights. In the moment, it adds to the ritual and intentionality of choosing a watch for the day. • Throughout the day, I check the app. It surfaces memories of watches and my adventures with them. It helps me enjoy the watches I’m not wearing today — even ones I’ve let go. • If I snap a wrist shot, I add it to Prolost Watches. These moments appear on the Map and in the Events timeline, and bubble up later for ongoing enjoyment. • Every turn of the calendar page, I enjoy the Manifest, a report of my activities and wear habits for the previous month. • When I sell a watch, I log that too. My watch finances keep track of themselves. Prolost Watches is a one-time purchase. There’s no subscription, no ads, no account. Your data is secure and private, and never leaves your device. I hope you’ll find, as I have, that Prolost Watches is more than a tool. It’s a way to hold your entire collection in your hand. To understand it, manage it, illuminate it. But most importantly, to enjoy it.

Screenshots

KERIS AR4 screens
Prolost Watches4 screens

Verdict

The call

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 (#143 vs unranked). On ads and in-app purchases 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

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 6 level
KERIS AR versus Prolost Watches: the parameters behind the verdict, then further details
ParameterKERIS ARProlost Watches
PriceFree — better$19.99
Rating—5.0 (8 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—8 — better
Update frequencyEvery 5 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
Best chart rank—#143 — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better26.0
Further details — not scored
Size280 MB13 MB
Age rating4+4+
DeveloperVisionaries777Prolost, Inc.

In-app purchases

None

KERIS AR

No in-app purchases

None

Prolost Watches

No in-app purchases

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.

Other comparisons