JervLooking for a Wandrer alternative
Wandrer scores the percentage of a region's roads you have travelled. Jerv covers ground rather than roads, and keeps a permanent map instead of a percentage. An honest comparison, including what Wandrer does better.
Wandrer has a devoted following for a good reason: it took a vague ambition — ride every road around here — and turned it into a number you can watch go up. If that number is what you want, Wandrer does it well and this page is not going to talk you out of it.
But people arrive at Wandrer wanting slightly different things, and a few of them are better served elsewhere. Here is an honest read on which is which.
What Wandrer does
Wandrer works from OpenStreetMap's road network. It connects to your Strava or Garmin account, matches your recorded activities against that network, and tells you what percentage of the roads in a given area you have travelled. Each ride gets a novelty figure — how much of it was new — and regions have badges at coverage thresholds.
The road-matching is the clever part and it is what makes the percentage meaningful. A road is a discrete thing with a name and two ends, and "I have ridden 41% of the roads in this county" is a sentence that means something precise.
What Jerv does instead
Jerv does not track roads. It divides the world into squares of roughly fifty metres a side and marks the ones you have physically passed through, permanently. There is no percentage of anything, because there is no denominator — the map is just the shape of everywhere you have been.
That is a real trade, and it cuts both ways.
Where the squares are worse: you cannot say "I have done 41% of this county". Squares do not know about roads, so a road you rode is not "complete" in any sense the app can name. If you want a completion percentage, Wandrer is built around one and Jerv is not.
Where the squares are better: they do not care how you moved. A footpath, a canal towpath, a shortcut through a car park, a trail with no OSM entry at all, a set of stairs — all of it opens squares. Walking counts identically to cycling. If your exploring is not road-shaped, roads are the wrong unit.
The other differences worth knowing
No Strava account required. Wandrer reads your activities from Strava or Garmin, so it needs one of those and it inherits whatever they recorded. Jerv records trips itself on the phone.
First footers. Jerv compares your squares against everyone else's, so the first person ever to cross a given square is recorded as such, permanently. That is a different motivation from coverage — it pushes you toward genuinely unvisited ground rather than the nearest unridden road.
Territory that decays. Blocks you visit often are held in your name and are lost if you stop going. It is the one part of Jerv that is not permanent, and it is deliberate: it gives the map a present tense as well as a history.
Privacy. Jerv has no advertising identifiers, no third-party analytics and no crash SDK, and you can draw a zone around home whose squares never leave the phone. This is worth checking on any app in this category, including ours — the privacy policy is specific about what it can and cannot do.
Maturity. Wandrer has been running for years and has a large user base, an established leaderboard culture and a lot of accumulated data. Jerv is in beta. If you want the settled option today, that is a fair reason to pick Wandrer.
Which to choose
Pick Wandrer if you ride roads, you already use Strava or Garmin, and you want a rigorous percentage of a named region.
Pick Jerv if you cover ground rather than roads — on foot as much as on wheels — and you want a permanent map of everywhere you have been, with the unvisited squares marked and claimable.
There is no reason you cannot run both. They read the same instinct and measure different things.
Get the iPhone beta — free, through TestFlight, and your map starts blacked out. The Android beta opens soon; the web app works in any browser today.