Soil Explorer vs Paired Comp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Soil Explorer
Discover detailed soil property and landscape maps for U.S. states and global soil distributions. Understand how map features relate to real-world observations. This educational tool uses data from USDA and USGS to illustrate complex soil-landscape relationships.
- Detailed soil property maps
- Landscape visualizations
- Global soil distribution maps
- Field observation correlation
- USDA NRCS data integration
- USGS data integration
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Explore detailed maps of soil properties and landscapes for various U.S. states, as well as small-scale maps of soil distributions for the world. Examine the details for a specific area, but also see the overview for a large area. Learn how features shown on the maps correspond to what you observe in the field. Soil Explorer utilizes detailed soil survey data from the USDA Natural Resources Conservation Service and data and maps from the U. S. Geological Survey and other sources to produce informative, highly engaging maps. These maps are designed to show the complex interrelationships between soil properties and the landscapes in which soils occur.
Paired Comp
This application facilitates evaluation experiments using the paired comparison method. Prepare your comparison targets as PDF files and conduct experiments on your iPad. It supports Thurstone's method and Scheffé's method for preference scaling.
- Conduct paired comparison experiments
- Supports Thurstone's method
- Supports Scheffé's method
- Uses PDF files for comparison targets
- iPad compatible
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「Paired Comp」は、一対比較法(paired comparison)を用いた評価実験を実施するためのアプリです。一対比較法とは、複数の対象の評価を行って尺度化を行いたい場合に、評価対象の中から2つを取り出して比較し、この比較をすべての組み合わせにおいて実施する方法です。本アプリは、比較したい対象のPDFファイルを用意するだけで、一対比較法による評価実験をiPadで実施することを可能にします。 例えば、書体の好みに関する尺度を作成したい場合、比較したい書体をPDFファイルで用意するだけで、アプリが自動的にペアを作成し、一対比較法による実験を実施してくれます。どちらが好きかを選択するサーストンの方法だけでなく、どちらがどの程度好きかを評価するシェッフェの方法にも対応しています。 なお、本アプリの開発にあたっては、文部科学省科学研究費基盤研究(A)「通常の学級で学ぶ視覚障害児のための合理的配慮に関する支援システムの構築」(課題番号16H02072)、株式会社モリサワの援助を受け、河瀬和真氏がコーディングを行いました。本アプリを開発するにあたっては、小松真也氏、草野勉氏、株式会社加賀ソルネットの協力を得ました。
Screenshots
Verdict
The clearest difference is update cadence: Paired Comp at every 10 days against Soil Explorer's every 11 months. On price, review sentiment, 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.
Soil Explorer ships an update every 11 months, Paired Comp every 10 days. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.
| Parameter | Soil Explorer | Paired Comp |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (9 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 9 — better | — |
| Update frequency | Every 11 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.7 | 14.0 — better |
| Further details — not scored | ||
| Size | 172 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Purdue University | Climb App |
Customer experience
Soil Explorer
Paired Comp
In-app purchases
Soil Explorer
No in-app purchases
Paired Comp
No in-app purchases
Questions
Is Soil Explorer free?
Is Paired Comp free?
Do Soil Explorer or Paired Comp have ads?
Which is updated more often, Soil Explorer or Paired Comp?
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