Comparison

TreeMapper vs The Un

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

Head to head
About

TreeMapper

Easily register and monitor reforestation efforts with a user-friendly interface. Track ecological progress, gather standardized data like location and species, and share your success globally or export for analysis. Features include offline support, a massive species database, and custom data collection forms.

Highlights
  • Register and monitor trees
  • Track ecological progress
  • Gather standardized data
  • Offline data storage
  • Massive species database
  • Customizable data forms
  • GeoJSON export
Features
Read full description

TreeMapper is the ultimate app designed to empower Plant-for-the-Planet users in registering and monitoring their reforestation efforts. With its super user-friendly interface, you can easily track ecological progress, all from the convenience of your smartphone—minimal training required! TreeMapper is your go-to tool for reforestation organizations, allowing you to gather standardized data like location, species, survival, growth, and imagery. Share your success with the world on the Plant-for-the-Planet platform (check out this real-world example: Yucatán Project), or export it locally for deeper analysis. New Features to Level Up Your Experience Interventions: Implement targeted actions to achieve specific climate goals and track their impact over time. Remeasurement: Keep your data updated by remeasuring trees, ensuring records stay accurate and fresh. Performance Boosts: Faster, smoother, and more efficient performance to keep your workflow seamless. Advanced Filters: Easily navigate through your data with powerful new filtering options. Data Explorer: Dive deeper into your data to explore trends and run detailed analyses. Built Just for You! Offline First: No internet? No problem! Your data is safely stored offline and synced once you're back online. Massive Species Database: Access a library of 60,000+ species from regions all over the world. Manage Species: Forget scientific names? Add common names or photos for easier tree identification. Cloud/Local Support: Choose to upload your data to the Plant-for-the-Planet cloud for real-time monitoring or keep it stored locally. Registrations Made Easy Multiple Trees: Planning large-scale planting? Create a polygon of the area and add sample trees on-site. Single Tree: Mark individual trees, select species, measure growth, and tag them with ease. GeoJSON Export: Export tree data with a single tap for further analysis. Custom Fields for Ultimate Flexibility Dynamic Data: Use the form builder to create custom forms for specific data collection at each site. Static Data: Enter details once and apply them to all future registrations. Organize Fields: Split large forms into multiple pages and drag-and-drop to reorder fields with ease. Privacy: Choose which fields to make public or keep private. Import/Export Fields: Save time by importing or sharing fields to prevent repetitive work. Advanced Mode: Get even more precise by assigning unique names to fields or setting default values for customized data entry.

About

The Un

Features
Read full description

This is app is part of the UnEndangered Forest Project. The project is a partnership between Novo Fogo, Porto Morretes, The Horus Institute and Ekôa Park in Morretes, on the southern coast of Brazil, in Paraná state, one of the Atlantic Forest areas of highest biodiversity on the planet. Our aim is to increase the number of existing trees that are now rare and endangered due to overexploitation in the past, when they were harvested as the most precious woods. With this app you're able to send data from the seedlings you planted to keep track of them in the future.

Screenshots

TreeMapper4 screens
The Un4 screens

Verdict

The call

The clearest difference is update cadence: TreeMapper at monthly against The Un's every 9 months. On price, ads, in-app purchases and device support 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TreeMapper ships an update monthly, The Un every 9 months. Both last shipped on November 3, 2026.

Scorecard1 real difference · 8 level
TreeMapper versus The Un: the parameters behind the verdict, then further details
ParameterTreeMapperThe Un
PriceFreeFree
Rating4.0 (3 ratings) — better—
Number of ratings3 — better—
Update frequencyMonthly — betterEvery 9 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.1
Further details — not scored
Size66 MB24 MB
Age rating4+4+
DeveloperPlant-for-the-Planet Foundation, Stiftung des burgerlichen RechtsInstituto Horus de Desenvolvimento e Conservacao Ambiental

In-app purchases

None

TreeMapper

No in-app purchases

None

The Un

No in-app purchases

Questions

Is TreeMapper free?
TreeMapper is free to download, with no in-app purchases.
Is The Un free?
The Un is free to download, with no in-app purchases.
Do TreeMapper or The Un have ads?
Neither TreeMapper nor The Un shows ads.
Which is updated more often, TreeMapper or The Un?
TreeMapper ships an update monthly, and The Un every 9 months. Most recently, TreeMapper was updated on November 3, 2026 and The Un on November 3, 2026.

Other comparisons