Free calculator · Updated for Prospectour 1.3.1

Prospectour compound growth calculator

Combine daily streak squares, boosts, paced nugget ads and automatic gem reinvestment to project your estate from 30 to 365 days.

1. Your current land

Example values are loaded. Replace them with the counts shown in your Inventory.

2. Boost, collection and gem strategy

Choose whether the projection keeps every gem or automatically compounds them throughout the whole period—not just once at the start.

3. Daily streak and projection

A complete seven-day ladder awards nuggets on days 1–5, one free square on day 6 and two free squares on day 7. The model repeats that ladder while your streak remains active.

4. Optional paid pack

Official EUR web-shop prices reviewed 2 September 2026. Prospectour currently applies 10% off every bundle online — a website-only offer not available in the app. Earnings use the current triple mint rates.

How this calculator works

Existing land uses the current exact rarity rates you enter. Future land uses the published probability-weighted average of 1.6131036 gems per day. Boosting applies 2× during the selected 30-minute periods, up to 24 boosted hours from 48 daily ads, while collection efficiency reduces output for missed or full-tank time.

Version 1.2.0 adds two one-way uses for gems: exchange them at 4 gems = 1 nugget, or buy a Land Credit for 2,520 gems at the current early-square price. Choose whether that conversion happens automatically every time the balance allows it, creating a compound loop through the whole projection.

A continuous daily streak repeats every seven days. The calculator adds the nugget rewards from days 1–5, one square on day 6 and two squares on day 7. Select your next reward day so the first week matches your real account.

The growth model keeps nugget ads at 8 nuggets each. Version 1.3.1 serves those ads in rounds of four followed by a 95-second pause; the calculator shows the minimum pacing wait separately from ad playback time. Boost ads are not paced.

The model purchases squares when the balance permits, applies the increasing land-cost rule, adds qualifying referral rewards on simulation day 60 and uses the official EUR web-shop promotion reviewed on 2 September 2026.

Current purchase offer: the official Prospectour website applies 10% off every nugget bundle automatically. This website-only offer is not available in the app. Compare all eight packs →
Projection assumptions: daily rewards are claimed on time, free squares and Land Credits are used promptly, and new land receives the published expected-average rarity. Cash Out is temporarily removed; all comparisons are in-game estimates, not a promise of profit.

Need the rules first? Read the beginner guide, Exchange and Cash Out status, rarity table and ad boost guide.