Comparison

Heritage Units vs LETS CROSSING

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

Head to head
About

Heritage Units

This app allows users to track and report special interest locomotives from major US railroads. View reported units on a map within a 200-mile radius and contribute new sightings directly from your device.

Highlights
  • Track heritage units
  • Report new locomotive locations
  • View locomotives on maps
  • Search within 200 miles
  • Support for major railroads
Features
Read full description

Track and report Heritage units (locomotives) and other special interest units for Norfolk Southern, Union Pacific, CSX, BNSF and other railroads. Features: • View reported locomotives within a 200 mile radius of your devices location. • Report a new locomotive location directly from the app • View locomotives on maps All recorded locomotive information is provided by volunteers using native apps and website (https://www.heritageunits.com) Continued use of GPS running in the background can dramatically decrease battery life. Terms of use: https://www.heritageunits.com/user/terms Privacy policy: https://www.heritageunits.com/user/privacy

About

LETS CROSSING

Experience realistic railroad crossings from around the world, enhanced by generative AI. Capture unique, AI-generated train photography images. Subscribe for premium features and collect your own original AI art.

Highlights
  • Realistic railroad crossing simulations
  • AI-generated train photography
  • Collect unique AI art
  • Multiple country simulations
  • Subscription for premium features
Features
Read full description

Play at your favorite railroad crossing anytime, anywhere! Experience the "Train Photography Simulation App" powered by cutting-edge generative AI technology. Collect your own unique and realistic AI-generated train photography images! This app lets you experience railroad crossings from various countries, recreated with stunning realism. By tapping the camera button, you can also obtain realistic train photography images generated by state-of-the-art generative AI technology. Additionally, by subscribing to a paid plan, you'll receive train photography tickets, allowing you to collect your own original AI-generated train photography images. Terms and Privacy Policy: https://nakajimamasao-appstudio.web.app/terms/

Screenshots

Heritage Units4 screens
LETS CROSSING4 screens

Verdict

The call

Heritage Units and LETS CROSSING both sit at 4.1 stars, but that hides the real split: 100% of LETS CROSSING's written reviews are positive against 58% of Heritage Units's. Heritage Units's advantage is ratings volume (258 vs 24). On price, rating, 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. Heritage Units sells 2 in-app purchases, starting at $0.99 per year and LETS CROSSING sells 5 in-app purchases, starting at $3.49 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.1 for Heritage Units against 4.2 for LETS CROSSING. That said, the two scores are not equally well evidenced: Heritage Units has 258 ratings behind it against 24, so its average is the more settled of the two. Written reviews are what separate them: 58% of Heritage Units's written reviews are positive against 100% of LETS CROSSING's.

UpkeepUpdate frequency

Heritage Units ships an update every 10 days, LETS CROSSING every 2 weeks. The most recent releases landed on October 22, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Heritage Units versus LETS CROSSING: the parameters behind the verdict, then further details
ParameterHeritage UnitsLETS CROSSING
PriceFreeFree
Rating4.1 (258 ratings)4.2 (24 ratings) — better
Positive reviews58.1% of reviews100.0% of reviews — better
Number of ratings258 — better24
Update frequencyEvery 10 days — betterEvery 2 weeks
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size122 MB114 MB
Age rating17+4+
DeveloperBrian MinnichMasao Nakajima

Customer experience

Heritage Units

All ratings253 ratings
Positive76.3%
Neutral8.3%
Negative15.4%
Written reviews93 reviews
Positive58.1%
Neutral15.1%
Negative26.9%

LETS CROSSING

All ratings24 ratings
Positive79.2%
Neutral8.3%
Negative12.5%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Heritage Units

Reported bugs

14 issues
  • App crashes when refreshing or loading reports
  • Persistent 'You've reached your limit for spots' error that lasts weeks or months
  • Login credentials rejected despite correct password/username
  • Automatic logout after 1-2 months of inactivity
  • Premium subscription purchases not recognized by app
Show 9 more
  • Email validation not working or emails not received
  • Location tracking showing incorrect geographic location
  • Reports not posting after submission despite multiple attempts
  • Timezone error when submitting reports
  • App incompatibility with certain iOS versions (iOS 12, etc.)
  • Cannot report certain locomotives that exist in database
  • Notification system stops working after initial use
  • API exceptions with no user-side resolution
  • Random account suspensions without explanation

Requested features

15 requests
  • Dark mode and light mode toggle
  • Report timestamp visibility to distinguish old vs new reports
  • Edit and delete buttons for submitted reports
  • Increase daily/monthly report submission limits
  • Ability to favorite or star specific locomotives
Show 10 more
  • View history of past reports made by user
  • Color-coded report age indicators (green for current, red for old, etc.)
  • Push notifications for units within 50-100 miles
  • Guest mode without account creation requirement
  • Chat feature for railfan community discussion
  • Add more heritage units to database (NS 3625, BNSF H1s, etc.)
  • Unlimited photo uploads for free users
  • Live time and destination information for trains
  • Ability to report multiple units in single photo with highlights
  • Include normal locomotives, not just heritage units

LETS CROSSING

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

Heritage Units

Subscriptions2
  • Ad Free$0.991 Year
  • Premium Membership$5.991 Year
5 purchases

LETS CROSSING

Subscriptions2
  • Monthly Standard$3.491 Month
  • Monthly Premium$4.991 Month
One-time3
  • Additional Passes$2.49
  • Trial$2.49
  • Purchase train photo passes$3.99

Questions

Is Heritage Units free?
Heritage Units is free to download, with in-app purchases available.
Is LETS CROSSING free?
LETS CROSSING is free to download, with in-app purchases available.
Which has better reviews, Heritage Units or LETS CROSSING?
LETS CROSSING is rated higher. Heritage Units averages 4.1 out of 5 from 258 ratings, while LETS CROSSING averages 4.2 from 24 ratings.
Do Heritage Units or LETS CROSSING have ads?
Both Heritage Units and LETS CROSSING show ads.
Which is updated more often, Heritage Units or LETS CROSSING?
Heritage Units ships an update every 10 days, and LETS CROSSING every 2 weeks. Most recently, Heritage Units was updated on October 22, 2026 and LETS CROSSING on October 7, 2026.

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