Forens vs Slentr
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Forens
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De trein app voor wie dagelijks een ritje maakt. Alle info die jij nodig hebt: - Jouw vaste ritten - Jouw vaste trajecten - En een reisplanner voor een dagje wat anders - Plus alles duidelijk te zien op de kaart: waar blijft jouw trein? Of waar zijn er storingen . Geen vervanger voor de prima officieel Nederlandse trein app, maar een mooie aanvulling voor de Forens. Ook ideaal voor jouw buitenlandse vrienden: English, Deutsch, Français, Español, Italiano, 日本語 & 中文 Met dank aan de NS voor het gebruik van hun top API. Oja, ook best handig op je Apple Watch. Ps. voor wie liever geen data deelt, deze app heeft geen interesse in jou en jouw data :) (Nul)
Slentr
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Every city has multiple sides. Slentr shows you all of them. Most people visit a city the same way — hitting the main sights, walking the busiest streets. Slentr works differently. You choose the themes that interest you, and the app builds a walking route around them — including highlights that match your selection. Architecture. Street art. Local history. Restaurants and cafés. Pick one theme or combine several — each route tells a different story about the same city. How it works: - Open the app and choose one or more themes - The app creates a route with matching highlights - Follow the route at your own pace - Learn the stories behind each location along the way Free to use and no account needed to get started. Explore your first three routes without signing up. Want to discover more? Create a free account and keep walking. Works anywhere Slentr works in any city. Whether you're walking through Amsterdam, visiting Berlin, or rediscovering your own neighbourhood — there's always a route that fits.
Screenshots
Verdict
The clearest difference is iOS requirement: Slentr at 15.1 against Forens's 26.2. On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Forens ships an update every 3 weeks, Slentr fortnightly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Forens | Slentr |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, Apple Watch | iPhone, iPad, iPod — better |
| Requires iOS | 26.2 | 15.1 — better |
| Further details — not scored | ||
| Size | 6 MB | 115 MB |
| Age rating | 4+ | 4+ |
| Developer | Gijs Raggers | Melvin Bruhn |
In-app purchases
Forens
No in-app purchases
Slentr
No in-app purchases









